The Pacific Ring of Fire is an area of frequent earthquakes and volcanic eruptions encircling the basin of the Pacific Ocean. An earthquake is the result of a sudden release of energy in the Earth 's crust that creates Seismic waves Earthquakes are recorded with a Seismometer Plate tectonics and hotspots Divergent plate boundaries At the The Pacific Ocean is the largest of the Earth 's Oceanic divisions In a 40,000 km horseshoe shape, it is associated with a nearly continuous series of oceanic trenches, volcanic arcs, and volcanic belts and/or plate movements. The oceanic trenches are hemispheric-scale long but narrow topographic depressions of the sea floor A volcanic arc is a chain of volcanic islands or Mountains formed by Plate tectonics as an oceanic Tectonic plate subducts under A volcanic belt is a large volcanically active region Other terms are used for smaller areas of activity such as volcanic fields Volcanic belts are found above zones The Ring of Fire has 452 volcanoes and is home to over 75% of the world's active and dormant volcanoes. It is sometimes called the circum-Pacific belt or the circum-Pacific seismic belt.
Ninety percent of the world's earthquakes and 80% of the world's largest earthquakes occur along the Ring of Fire. The next most seismic region (5–6% of earthquakes and 17% of the world's largest earthquakes) is the Alpide belt, which extends from Java to Sumatra through the Himalayas, the Mediterranean, and out into the Atlantic. The Alpide belt is a Mountain range which extends along the southern margin of Eurasia. Java (Jawa is an Island of Indonesia and the site of its Capital city Jakarta. Sumatra (also spelled Sumatera) is the sixth largest island in the world (approximately 470000 km² and is the largest island entirely in Indonesia (two The Mid-Atlantic Ridge is the third most prominent earthquake belt. The Mid-Atlantic Ridge (MAR is a Mid-ocean ridge, a Divergent tectonic plate boundary located along the floor of the Atlantic Ocean. [1][2]
The Ring of Fire is a direct result and consequence of plate tectonics and the movement and collisions of crustal plates. Plate tectonics (from Greek τέκτων tektōn "builder" or "mason" describes the large scale motions of Earth 's Lithosphere [3] The eastern section of the ring is the result of the Nazca Plate and the Cocos Plate being subducted beneath the westward moving South American Plate. The Nazca Plate, named after the Nazca region of southern Peru, is an oceanic Tectonic plate in the eastern Pacific Ocean basin off the west The Cocos Plate is an oceanic Tectonic plate beneath the Pacific Ocean off the west coast of Central America, named for Cocos Island, which rides In Geology, a subduction zone is an area on Earth where two tectonic plates meet and move towards one another with one sliding underneath the other The South American Plate is a Tectonic plate covering the Continent of South America and extending eastward to the Mid-Atlantic Ridge. A portion of the Pacific Plate along with the small Juan de Fuca Plate are being subducted beneath the North American Plate. The Pacific Plate is an oceanic Tectonic plate beneath the Pacific Ocean. The Juan de Fuca Plate, named after the explorer, is a Tectonic plate arising from the Juan de Fuca Ridge, and subducting under the northerly The North American Plate is a Tectonic plate covering most of North America, Greenland and part of Siberia. Along the northern portion the northwestward moving Pacific plate is being subducted beneath the Aleutian Islands arc. The Aleutian Islands (possibly from Chukchi aliat, " Island " are a chain of more than 300 small volcanic islands forming a Volcanic Further west the Pacific plate is being subducted along the Kamchatka Peninsula arcs on south past Japan. For a topic outline on this subject see List of basic Japan topics. The southern portion is more complex with a number of smaller tectonic plates in collision with the Pacific plate from the Mariana Islands, the Philippines, Bougainville, Tonga, and New Zealand. The Mariana Islands (also the Marianas; up to the early 20th century sometimes called Ladrones Islands, from Spanish Islas de los Ladrones meaning The Philippines ( Filipino: Pilipinas, officially known as the Republic of the Philippines (fil ''Republika ng Pilipinas'' RP Bougainville is part of Papua New Guinea. Geographically, Bougainville is included in the chain of islands known as the Solomon Islands in Melanesia The Kingdom of Tonga is an Archipelago in the south Pacific Ocean comprising 169 islands 36 of them inhabited stretching over a distance of about 800 kilometres (500 miles New Zealand is an Island country in the south-western Pacific Ocean comprising two main landmasses (the North Island and the South Island Indonesia lies between the Ring of Fire along the northeastern islands adjacent to and including New Guinea and the Alpide belt along the south and west from Sumatra, Java, Bali, Flores, and Timor. The Republic of Indonesia ( (Republik Indonesia is a Country in Southeast Asia. New Guinea, located just north of Australia, is the world's second largest island, having become separated from the Australian mainland when the area now known Bali is an Indonesian Island located at, the westernmost of the Lesser Sunda Islands, lying between Java to the west and Lombok to Flores is one of the Lesser Sunda Islands, an Island arc with an estimated area of 14300 km² extending east from the Java island of Indonesia Timor is an Island at the south end of the Malay Archipelago, north of the Timor Sea. The famous and very active San Andreas Fault zone of California is a transform fault which offsets a portion of the East Pacific Rise under southwestern United States and Mexico. The San Andreas Fault is a geologic Transform fault that runs a length of roughly 800 miles (1300 km through California in the United States. California ( is a US state on the West Coast of the United States, along the Pacific Ocean. A transform fault is a fault which runs along the boundary of a Tectonic plate. The East Pacific Rise is a Mid-oceanic ridge, a divergent tectonic plate boundary located along the floor of the Pacific Ocean. The United States of America —commonly referred to as the The United Mexican States ( or commonly Mexico (ˈmɛksɪkoʊ () is a federal constitutional Republic in North America. The motion of the fault generates numerous small earthquakes, at multiple times a day, most of which are too small to be felt. [4][5] The active Queen Charlotte Fault on the west coast of the Queen Charlotte Islands, British Columbia, Canada, has generated three large earthquakes during the 20th century: a magnitude 7 event in 1929, a magnitude 8. The Queen Charlotte Fault is an active Transform fault, located between the North American Plate and the Pacific Plate, Canada's equivalent of the The Queen Charlotte Islands or Haida Gwaii ("Islands of the People" and originally in Haida, Xhaaidlagha Gwaayaai ("islands on British Columbia (ˌbrɪtɨʃ kəˈlʌmbiə ( BC) ( (la Colombie-Britannique C Country to "Dominion of Canada" or "Canadian Federation" or anything else please read the Talk Page An earthquake is the result of a sudden release of energy in the Earth 's crust that creates Seismic waves Earthquakes are recorded with a Seismometer The twentieth century of the Common Era began on The Richter magnitude scale, or more correctly local magnitude M L scale assigns a single number to quantify the amount of seismic energy released Year 1929 ( MCMXXIX) was a Common year starting on Tuesday (link will display the full calendar of the Gregorian calendar. 1 occurred in 1949 (Canada's largest recorded earthquake) and a magnitude 7. Year 1949 ( MCMXLIX) was a Common year starting on Saturday (link will display the full calendar of the Gregorian calendar. 4 in 1970. Year 1970 ( MCMLXX) was a Common year starting on Thursday (link shows full calendar of the Gregorian calendar. [6]
The December 2004 earthquake just off the coast of Sumatra was actually a part of the Alpide belt. The 2004 Indian Ocean earthquake was an undersea Earthquake that occurred at 005853 UTC on December 26 2004 with an Epicentre off the west coast of The Alpide belt is a Mountain range which extends along the southern margin of Eurasia.
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United States
Western United States lies the Cascade Volcanic Arc. The Cascadia Subduction zone is a Subduction zone, a type of convergent plate boundary that stretches from northern Vancouver Island to The Cascade Volcanoes (also known as the Cascade Volcanic Arc or the Cascade Arc) are a number of Volcanoes in a Volcanic arc in western The United States of America —commonly referred to as the The Cascade Volcanoes (also known as the Cascade Volcanic Arc or the Cascade Arc) are a number of Volcanoes in a Volcanic arc in western It includes nearly 20 major volcanoes, among a total of over 4,000 separate volcanic vents including numerous stratovolcanoes, shield volcanoes, lava domes, and cinder cones, along with a few isolated examples of rarer volcanic forms such as tuyas. A stratovolcano, also called a composite volcano is a tall conical Volcano composed of many layers of hardened Lava, Tephra, and Volcanic A shield volcano is a large Volcano with shallow-sloping sides In Volcanology, a lava dome or plug dome is a roughly circular Mound -shaped protrusion resulting from the slow eruption of Felsic Lava A cinder cone or scoria cone is a steep conical Hill of volcanic fragments that accumulate around and downwind from a Volcanic vent. A tuya is a type of distinctive flat-topped steep-sided Volcano formed when Lava erupts through a thick Glacier or Ice sheet. Volcanism in the arc began about 37 million years ago, however, most of the present-day Cascade volcanoes are less than 2,000,000 years old, and the highest peaks are less than 100,000 years old. It formed by subduction of the Gorda and Juan de Fuca plates at the Cascadia subduction zone. In Geology, a subduction zone is an area on Earth where two tectonic plates meet and move towards one another with one sliding underneath the other The Gorda Plate, located beneath the Pacific Ocean off the coast of northern California, is one of the northern remnants of the Farallon Plate. The Juan de Fuca Plate, named after the explorer, is a Tectonic plate arising from the Juan de Fuca Ridge, and subducting under the northerly The Cascadia Subduction zone is a Subduction zone, a type of convergent plate boundary that stretches from northern Vancouver Island to This is a 680 mi (1,094 km) long fault, running 50 mi (80 km) off the west-coast of the Pacific Northwest from northern California to Vancouver Island, British Columbia. A mile is a unit of Length, usually used to measure Distance, in a number of different systems including Imperial units United States The kilometre ( American spelling: kilometer) symbol km is a unit of Length in the Metric system, equal to one thousand In Geology a fault, or fault line, is a planar rock fracture which shows evidence of relative movement The Pacific Northwest is a region in the northwest of North America (the term refers to the land not the ocean Northern California is the northern portion of the US state of California. Vancouver Island is a large Island in British Columbia, Canada, one of several North American regions named after George Vancouver, the British British Columbia (ˌbrɪtɨʃ kəˈlʌmbiə ( BC) ( (la Colombie-Britannique C The plates move at a relative rate of over 0. 4 inches (10 mm) per year at a somewhat oblique angle to the subduction zone. In Geology, a subduction zone is an area on Earth where two tectonic plates meet and move towards one another with one sliding underneath the other
Because of the very large fault area, the Cascadia subduction zone can produce very large earthquakes, magnitude 9. 0 or greater, if rupture occurred over its whole area. When the "locked" zone stores up energy for an earthquake, the "transition" zone, although somewhat plastic, can rupture. Thermal and deformation studies indicate that the locked zone is fully locked for 60 kilometers (about 40 miles) downdip from the deformation front. Further downdip, there is a transition from fully locked to aseismic sliding. Geology, aseismic creep is measurable surface displacement along a fault in the absence of notable Earthquakes An example is along the Calaveras
Unlike most subduction zones worldwide, there is no oceanic trench present along the continental margin in Cascadia. The oceanic trenches are hemispheric-scale long but narrow topographic depressions of the sea floor The continental margin is the zone of the Ocean floor that separates the thin Oceanic crust from thick Continental crust. Instead, terranes and the accretionary wedge have been uplifted to form a series of coast ranges and exotic mountains. A terrane in Geology is a fragment of crustal material formed on or broken off from one Tectonic plate and accreted — " sutured " A high rate of sedimentation from the outflow of the three major rivers (Fraser River, Columbia River, and Klamath River) which cross the Cascade Range contributes to further obscuring the presence of a trench. For other uses of this name see Fraser River (disambiguation. The Columbia River (known as The Klamath River ( Ishkêesh in Karuk) approximately long is a major River in southern Oregon and northern California in the However, in common with most other subduction zones, the outer margin is slowly being compressed, similar to a giant spring. A spring is a flexible elastic object used to store mechanical Energy. When the stored energy is suddenly released by slippage across the fault at irregular intervals, the Cascadia subduction zone can create very large earthquakes such as the magnitude 9 Cascadia earthquake of 1700. An earthquake is the result of a sudden release of energy in the Earth 's crust that creates Seismic waves Earthquakes are recorded with a Seismometer The Richter magnitude scale, or more correctly local magnitude M L scale assigns a single number to quantify the amount of seismic energy released Geological evidence indicates that great earthquakes may have occurred at least seven times in the last 3,500 years, suggesting a return time of 400 to 600 years. There is also evidence of accompanying tsunamis with every earthquake, as the prime reason they know of these earthquakes is through "scars" the tsunami left on the coast, and through Japanese records (tsunami waves can travel across the pacific). For a topic outline on this subject see List of basic Japan topics.
The 1980 eruption of Mount St. Helens was the most significant to occur in the contiguous 48 U.S. states in recorded history (VEI = 5, 0. The 1980 eruption of Mount St Helens, a volcano located in Washington state in the United States was a major volcanic eruption. A US state is any one of the fifty subnational entities of the United States of America that share Sovereignty with the federal government The Volcanic Explosivity Index (VEI was devised by Chris Newhall of the U 3 cu mi, 1. 2 km3 of material erupted), exceeding the destructive power and volume of material released by the 1915 eruption of California's Lassen Peak. California ( is a US state on the West Coast of the United States, along the Pacific Ocean. Lassen Peak (also known as Mount Lassen) is the southernmost active Volcano in the Cascade Range. The eruption was preceded by a two-month series of earthquakes and steam-venting episodes, caused by an injection of magma at shallow depth below the mountain that created a huge bulge and a fracture system on Mount St. Helens' north slope. An earthquake is the result of a sudden release of energy in the Earth 's crust that creates Seismic waves Earthquakes are recorded with a Seismometer Uses A Steam engine uses the expansion of steam in order to drive a Piston or Turbine to perform Mechanical work. Magma (Plurals magmas and magmata) is molten rock that sometimes forms beneath the surface of the Earth (or any other Terrestrial planet Mount St Helens is an active Stratovolcano located in Skamania County, Washington, in the Pacific Northwest region of the United States An earthquake at 8:32 a. m. on May 18, 1980, caused the entire weakened north face to slide away, suddenly exposing the partly molten, gas- and steam-rich rock in the volcano to lower pressure. Events 1152 - Henry II of England marries Eleanor of Aquitaine. Year 1980 ( MCMLXXX) was a Leap year starting on Tuesday (link displays the 1980 Gregorian calendar) Uses A Steam engine uses the expansion of steam in order to drive a Piston or Turbine to perform Mechanical work. In Geology, rock is a naturally occurring aggregate of Minerals and/or Mineraloids The Earth's outer solid layer the ‘ Lithosphere The rock responded by exploding into a very hot mix of pulverized lava and older rock that sped toward Spirit Lake so fast that it quickly passed the avalanching north face. Lava is molten rock expelled by a Volcano during an eruption When first expelled from a volcanic vent it is a Liquid at Temperatures Spirit Lake is a Lake north of Mount St Helens in Washington State.
A volcanic ash column rose high into the atmosphere and deposited ash in 11 U. Volcanic ash consists of small Tephra, which are bits of pulverized rock and glass created by volcanic eruptions less than in diameter Temperature and layers The temperature of the Earth's atmosphere varies with altitude the mathematical relationship between temperature and altitude varies among five S. states. At the same time, snow, ice, and several entire glaciers on the mountain melted, forming a series of large lahars (volcanic mudslides) that reached as far as the Columbia River. "Glacial" and "Glaciation" redirect here For the geological periods see Glacial period. A lahar is a type of Mudflow / Landslide composed of Pyroclastic material and Water that flows down from a Volcano, typically Mudslide redirects here it is also the name of a cocktail. A mudflow or mudslide is the most rapid (up to 80 km/h / 50 mph The Columbia River (known as Less severe outbursts continued into the next day only to be followed by other large but not as destructive eruptions later in 1980. By the time the ash settled, 57 people (including innkeeper Harry Truman and geologist David A. Johnston) and thousands of animals were dead, hundreds of square miles reduced to wasteland, over a billion U.S. dollars in damage had occurred ($2. Harry Randall Truman ( October 30, 1896 &ndash May 18, 1980) came to brief fame as a resident of the U David Alexander Johnston ( December 18, 1949 &ndash May 18, 1980) was a Volcanologist with the United States Geological The square mile is an imperial and US unit of Area equal the area of a square of one statute mile. The United States dollar ( sign: $; code: USD) is the unit of Currency of the United States; it has also been 74 billion in 2007 dollars[7]), and the face of Mount St. Helens was scarred with a huge crater on its north side. At the time of the eruption, the summit of Mount St. Helens was owned by the Burlington Northern Railroad, but afterward the land passed to the United States Forestry Service. The Burlington Northern Railroad was a United States -based Railroad company operating between 1970 and 1996 The area was later preserved, as it was, in the Mount St. Helens National Volcanic Monument. Mount St Helens National Volcanic Monument is a US National Monument that
Native Americans have inhabited the area for thousands of years and developed their own myths and legends concerning the Cascade volcanoes. Native Americans in the United States are the indigenous peoples from the regions of North America now encompassed by the continental United States The word mythology (from the Greek grc μυθολογία mythología, meaning "a story-telling a legendary lore" A legend ( Latin, legenda, "things to be read" is a Narrative of human actions that are perceived both by teller and listeners to According to some of these tales, Mounts Baker, Jefferson, Shasta were used as refuge from a great flood. Mount Baker (elevation) is an active glaciated andesitic Stratovolcano in the Cascade Volcanic Arc and the Cascades of For other mountains named Mount Jefferson see Mount Jefferson Mount Shasta ( Úytaahkoo, Karuk) or the "White Mountain" in English a 14179-foot (4322 m Stratovolcano, is the second-highest peak in the A flood is an overflow of an expanse of water that submerges land a deluge Other stories, such as the Bridge of the Gods tale, had various High Cascades such as Hood and Adams, act as god-like chiefs who made war by throwing fire and stone at each other. The original Bridge of the Gods was created during the eighteenth century by the Bonneville Slide, a major Landslide which Dammed the Columbia River Mount Hood (called Wy'east by the Multnomah tribe) is a Stratovolcano in the Cascade Volcanic Arc in northern Mount Adams is a potentially active Stratovolcano in the Cascade Range and the second-highest Mountain in the state of Washington War is an international relations Dispute, characterized by organized Violence between National Military units St. Helens with its pre-1980 graceful appearance, was regaled as a beautiful maiden for whom Hood and Adams feuded. Mount St Helens is an active Stratovolcano located in Skamania County, Washington, in the Pacific Northwest region of the United States Among the many stories concerning Mount Baker, one tells that the volcano was formerly married to Mount Rainier and lived in that vicinity. Then, because of a marital dispute, she picked herself up and marched north to her present position. Native tribes also developed their own names for the High Cascades and many of the smaller peaks, the most well-known to non-natives being Tahoma, the Lushootseed name for Mount Rainier. Lushootseed (also xʷəlšucid, dxʷləšúcid, Puget Salish, Puget Sound Salish, Skagit-Nisqually) is the language or Dialect Mount Rainier is an active Stratovolcano (also known as a composite volcano in Pierce County Washington, located southeast of Seattle, Washington
Legends associated with the great volcanoes are many, as well as with other peaks and geographical features of the arc, including its many hot springs and waterfalls and rock towers and other formations. Stories of Tahoma - today Mount Rainier and the namesake of Tacoma, Washington - allude to great, hidden grottos with sleeping giants, apparitions and other marvels in the volcanoes of Washington, and Mount Shasta in California has long been well-known for its associations with everything from Lemurians to aliens to elves and, as everywhere in the arc, Sasquatch or Bigfoot. Mount Rainier is an active Stratovolcano (also known as a composite volcano in Pierce County Washington, located southeast of Seattle, Washington Washington ( is a state in the Pacific Northwest region of the United States. Mount Shasta ( Úytaahkoo, Karuk) or the "White Mountain" in English a 14179-foot (4322 m Stratovolcano, is the second-highest peak in the Lemuria (lɨˈmjʊəriə is the name of a hypothetical " lost land " variously located in the Indian and Pacific Oceans Bigfoot or Sasquatch is alleged to be an Ape -like creature inhabiting remote forests mainly in the Pacific Northwest region of the United States and Canada Bigfoot or Sasquatch is alleged to be an Ape -like creature inhabiting remote forests mainly in the Pacific Northwest region of the United States and Canada
In the spring of 1792 British navigator George Vancouver entered Puget Sound and started to give English names to the high mountains he saw. Captain George Vancouver Puget Sound (ˈpjuːʤᵻt is an arm of the Pacific Ocean, connected to the rest of the Pacific by the Strait of Juan de Fuca, in the Pacific Northwest English is a West Germanic language originating in England and is the First language for most people in the United Kingdom, the United States Mount Baker was named for Vancouver's third lieutenant, the graceful Mount St. Helens for a famous diplomat, Mount Hood was named in honor of Samuel Hood, 1st Viscount Hood (an admiral of the Royal Navy) and the tallest Cascade, Mount Rainier, is the namesake of Admiral Peter Rainier. Mount Baker (elevation) is an active glaciated andesitic Stratovolcano in the Cascade Volcanic Arc and the Cascades of Mount St Helens is an active Stratovolcano located in Skamania County, Washington, in the Pacific Northwest region of the United States Mount Hood (called Wy'east by the Multnomah tribe) is a Stratovolcano in the Cascade Volcanic Arc in northern For other related uses see Admiral Hood Samuel Hood 1st Viscount Hood ( 12 December 1724 &ndash 27 January Admiral is the rank, or part of the name of the ranks of the highest Naval officers The Royal Navy of the United Kingdom is the oldest of the British armed services (and is therefore known as the Senior Service) Mount Rainier is an active Stratovolcano (also known as a composite volcano in Pierce County Washington, located southeast of Seattle, Washington Peter Rainier may be one of two British naval officers Peter Rainier junior (1741-1808 Peter Rainier (1784-1836 Vancouver's expedition did not, however, name the arc these peaks belonged to. As marine trade in the Strait of Georgia and Puget Sound proceeded in the 1790s and beyond, the summits of Rainier and Baker became familiar to captains and crews (mostly British and American over all others, but not exclusively). The Strait of Georgia or the Georgia Strait (also known as the Gulf of Georgia) is a Strait between Vancouver Island (as well as its nearby Puget Sound (ˈpjuːʤᵻt is an arm of the Pacific Ocean, connected to the rest of the Pacific by the Strait of Juan de Fuca, in the Pacific Northwest Mount Rainier is an active Stratovolcano (also known as a composite volcano in Pierce County Washington, located southeast of Seattle, Washington Mount Baker (elevation) is an active glaciated andesitic Stratovolcano in the Cascade Volcanic Arc and the Cascades of
With the exception of the 1915 eruption of remote Lassen Peak in Northern California, the arc was quiet for more than a century. Lassen Peak (also known as Mount Lassen) is the southernmost active Volcano in the Cascade Range. Northern California is the northern portion of the US state of California. Then, on May 18, 1980, the dramatic eruption of little-known Mount St. Helens shattered the quiet and brought the world's attention to the arc. Events 1152 - Henry II of England marries Eleanor of Aquitaine. Year 1980 ( MCMLXXX) was a Leap year starting on Tuesday (link displays the 1980 Gregorian calendar) Mount St Helens is an active Stratovolcano located in Skamania County, Washington, in the Pacific Northwest region of the United States Geologists were also concerned that the St. A geologist is a contributor to the Science of Geology, studying the physical structure and processes of the Earth and planets of the solar system Helens eruption was a sign that long-dormant Cascade volcanoes might become active once more, as in the period from 1800 to 1857 when a total of eight erupted. None have erupted since St. Helens, but precautions are being taken nevertheless, such as the Mount Rainier Volcano Lahar Warning System in Pierce County, Washington. A lahar is a type of Mudflow / Landslide composed of Pyroclastic material and Water that flows down from a Volcano, typically Pierce County is the second most populous county in the US state of Washington. [8]
Canada
- See also: Volcanism in Canada
Although little-known to the general public, British Columbia and the Yukon Territory is home to a vast region of volcanoes and volcanic activity in the Pacific Ring of Fire. Mount Edziza is a Stratovolcano in the Stikine Country of northwestern British Columbia, Canada. A shield volcano is a large Volcano with shallow-sloping sides Canada has examples of almost every type of Volcano found on Earth, including Stratovolcanoes Calderas Cinder cones British Columbia (ˌbrɪtɨʃ kəˈlʌmbiə ( BC) ( (la Colombie-Britannique C Yukon (ˈjuːkɒn is the westernmost and smallest of Canada's three territories. [9] Several mountains that many British Columbians look at every day are dormant volcanoes. Most of them have erupted during the Pleistocene and Holocene. The Pleistocene ('plaɪstəsin is the epoch from 18 million to 10000 years BP covering the world's recent period The Holocene is a Geological epoch which began approximately 10000 years ago (about 8000 BC Although none of Canada's volcanoes are currently erupting, several volcanoes, volcanic fields and volcanic centers are considered potentially active. A volcanic field is a spot of the Earth 's crust that is prone to localized Volcanic activity [10] There are hot springs at some volcanoes while 10 volcanoes in British Columbia appear related to seismic activity since 1975, including: the Silverthrone Caldera, Mount Meager, Wells Gray-Clearwater Volcanic Field, Mount Garibaldi, Mount Cayley, Castle Rock, Lava Fork, Mount Edziza, Hoodoo Mountain, Crow Lagoon and Nazko Cone. A hot spring is a spring that is produced by the emergence of geothermally heated Groundwater from the earth's crust. Year 1975 ( MCMLXXV) was a Common year starting on Wednesday (link will display full calendar of the Gregorian calendar. The Silverthrone Caldera is a potentially active Caldera complex in southwestern British Columbia, Canada, located over northwest of the city of Mount Meager, also called the Meager Group, Meager Mountain, Mount Meager Volcanic Complex or Meager Creek Volcanic Field (sometimes mistakenly The Wells Gray-Clearwater volcanic field, also called the Clearwater Cone Group, Monogenetic volcanic field in east-central British Columbia, Canada Mount Garibaldi is a potentially active Stratovolcano in the Squamish-Lillooet Regional District of British Columbia, north of Vancouver, Mount Cayley is a potentially active Stratovolcano in Squamish-Lillooet Regional District of southwestern British Columbia, Canada. Castle Rock is a volcanic neck located 13 km west of Iskut and 8 km northwest of Tuktsayda Mountain in British Columbia, Canada Lava Fork is a Creek in northern British Columbia, Canada, west of the Unuk River and northwest of Stewart. Mount Edziza is a Stratovolcano in the Stikine Country of northwestern British Columbia, Canada. Hoodoo Mountain is a massive but gently-sloped Volcano in the Boundary Ranges associated with the Northern Cordilleran Volcanic Province. Crow Lagoon is a little-known volcanic center located north of Prince Rupert, British Columbia, Canada. Nazko Cone is a small potentially active Basaltic Cinder cone in central British Columbia, Canada, located 75 km west of Quesnel [11] The volcanoes are grouped into five volcanic belts with different tectonic settings. A volcanic belt is a large volcanically active region Other terms are used for smaller areas of activity such as volcanic fields Volcanic belts are found above zones
The Northern Cordilleran Volcanic Province (sometimes known as the Stikine Volcanic Belt) is the most active volcanic region in Canada. The Northern Cordilleran Volcanic Province (NCVP sometimes called the Stikine Volcanic Belt, is a group of Volcanoes and Volcanic fields located in the It formed due to extensional cracking, faulting and rifting of the North American Plate, as the Pacific Plate grinds and slides past the Queen Charlotte Fault, unlike subduction that produces the volcanoes in Japan, Philippines and Indonesia. In Geology a fault, or fault line, is a planar rock fracture which shows evidence of relative movement In Geology, a rift is a place where the Earth 's crust and Lithosphere are being pulled apart and is an example of Extensional tectonics The Queen Charlotte Fault is an active Transform fault, located between the North American Plate and the Pacific Plate, Canada's equivalent of the The region has Canada's largest volcanoes,[9] much larger than the minor stratovolcanoes found in the Canadian portion of the Cascade Volcanic Arc. Country to "Dominion of Canada" or "Canadian Federation" or anything else please read the Talk Page A stratovolcano, also called a composite volcano is a tall conical Volcano composed of many layers of hardened Lava, Tephra, and Volcanic The Garibaldi Volcanic Belt is a north-south range of Volcanoes in southwestern British Columbia, Canada. [9] Several eruptions are known to have occurred within the last 400 years. Mount Edziza is a huge volcanic complex that erupted several times in the past several thousand of years, which has formed several cinder cones and lava flows. Mount Edziza is a Stratovolcano in the Stikine Country of northwestern British Columbia, Canada. A cinder cone or scoria cone is a steep conical Hill of volcanic fragments that accumulate around and downwind from a Volcanic vent. Lava is molten rock expelled by a Volcano during an eruption When first expelled from a volcanic vent it is a Liquid at Temperatures The complex comprises the Mount Edziza Plateau, a large volcanic plateau (65 kilometers long and 20 kilometers wide) made of predominantly basaltic lava flows with four large stratovolcanoes built on top of the plateau. Mount Edziza is a Stratovolcano in the Stikine Country of northwestern British Columbia, Canada. A volcanic plateau is a Plateau produced by Volcanic activity. A stratovolcano, also called a composite volcano is a tall conical Volcano composed of many layers of hardened Lava, Tephra, and Volcanic The associated lava domes and satellite cones were constructed over the past 7. In Volcanology, a lava dome or plug dome is a roughly circular Mound -shaped protrusion resulting from the slow eruption of Felsic Lava Satellite cone (or parasitic cone) is a geographical feature found around a Volcano. 5 million years during five magmatic cycles beginning with eruption of alkali basalts and ending wth felsic and basaltic eruptions as late as 1,340 years ago. In Chemistry, an alkali (from Arabic: Al-Qaly القلي القالي) is a basic, ionic salt of an Alkali metal Basalt (bəˈsɔːlt ˈbeisɔːlt ˈbæsɔːlt is a common Extrusive Volcanic rock. Felsic is a term used in Geology to refer to Silicate minerals, Magma, and rocks which are enriched in the lighter elements such as Silicon The blocky lava flows still maintain their original forms. Hoodoo Mountain is a tuya in northwestern British Columbia, which has had several periods of subglacial eruptions. Hoodoo Mountain is a massive but gently-sloped Volcano in the Boundary Ranges associated with the Northern Cordilleran Volcanic Province. A tuya is a type of distinctive flat-topped steep-sided Volcano formed when Lava erupts through a thick Glacier or Ice sheet. A subglacial eruption is a Volcanic eruption that has occurred under Ice, or under a Glacier. The oldest eruptions occurred about 100,000 years ago and the most recent being about 7000 years ago. Hoodoo Mountain is also considered active and could erupt in the future. Plate tectonics and hotspots Divergent plate boundaries At the The nearby Tseax Cone and Lava Fork produced some of Canada's youngest lava flows, that are about 150 years old. The Tseax Cone, also called the Tseax River Cone or the Aiyansh Volcano (pron Lava Fork is a Creek in northern British Columbia, Canada, west of the Unuk River and northwest of Stewart.
Canada's worst known geophyical disaster came from the Tseax Cone during the 18th century at the southernmost end of the volcanic belt. The Tseax Cone, also called the Tseax River Cone or the Aiyansh Volcano (pron The 18th century lasted from 1701 to 1800 in the Gregorian calendar, in accordance with the Anno Domini / Common Era numbering system A volcanic belt is a large volcanically active region Other terms are used for smaller areas of activity such as volcanic fields Volcanic belts are found above zones The eruption produced a 22. 5 km long lava flow, destroying the Nisga'a villages and the death of at least 2000 Nisga'a people by volcanic gases and poisonous smoke. The Nisga'a (nisqaʔa often formerly spelled Nishga and spelled in the Nisga'a language as Nisg̱a'a, are an Indigenous nation or A village is a clustered human settlement or community, larger than a hamlet, but smaller than a Town or City. Volcanic gases include a variety of substances given off by active (or at times by dormant Volcanoes These include gases trapped in cavities ( Vesicles) in The Nass River valley was inundated by the lava flows and contain abundant tree molds and lava tubes. The Nass River is a river in northern British Columbia, Canada. Lava tubes are natural conduits through which Lava travels beneath the surface of a lava flow expelled by a Volcano during an eruption The event happened at the same time with the arrival of the first European explorers to penetrate the uncharted coastal waters of northern British Columbia. British Columbia (ˌbrɪtɨʃ kəˈlʌmbiə ( BC) ( (la Colombie-Britannique C Today, the basaltic lava deposits are a draw to tourists and are part of the Nisga'a Memorial Lava Beds Provincial Park. Nisga'a Memorial Lava Beds Provincial Park ( Nisga'a: Anhluut'ukwsim Laxmihl Angwinga'asankswhl Nisga'a) is a Provincial park in the Nass River
The Garibaldi Volcanic Belt in southwestern British Columbia, is the northern extension of the Cascade Volcanic Arc in the United States (which includes Mount Baker and Mount St. Helens) and contains the most explosive young volcanoes in Canada. Mount Cayley is a potentially active Stratovolcano in Squamish-Lillooet Regional District of southwestern British Columbia, Canada. The Garibaldi Volcanic Belt is a north-south range of Volcanoes in southwestern British Columbia, Canada. The Cascade Volcanoes (also known as the Cascade Volcanic Arc or the Cascade Arc) are a number of Volcanoes in a Volcanic arc in western The United States of America —commonly referred to as the Mount Baker (elevation) is an active glaciated andesitic Stratovolcano in the Cascade Volcanic Arc and the Cascades of Mount St Helens is an active Stratovolcano located in Skamania County, Washington, in the Pacific Northwest region of the United States [12] It formed as a result of subduction of the Juan de Fuca Plate (a remnant of the much larger Farallon Plate) under the North American Plate along the Cascadia subduction zone. In Geology, a subduction zone is an area on Earth where two tectonic plates meet and move towards one another with one sliding underneath the other The Juan de Fuca Plate, named after the explorer, is a Tectonic plate arising from the Juan de Fuca Ridge, and subducting under the northerly The Farallon Plate was an ancient Oceanic plate, which began Subducting under the west coast of the North American Plate &mdash then located in modern The North American Plate is a Tectonic plate covering most of North America, Greenland and part of Siberia. The Cascadia Subduction zone is a Subduction zone, a type of convergent plate boundary that stretches from northern Vancouver Island to [12] The Garibaldi Volcanic Belt includes the Bridge River Cones, Mount Cayley, Mount Fee, Mount Garibaldi, Mount Price, Mount Meager, the Squamish Volcanic Field and much more smaller volcanoes. The Bridge River Cones is the name given to a Volcanic field located on the north flank of the upper Bridge River, about 40 kilometres west of the town of Mount Cayley is a potentially active Stratovolcano in Squamish-Lillooet Regional District of southwestern British Columbia, Canada. Mount Fee is a Volcanic neck in British Columbia, Canada, located 13 km south of Callaghan Lake and 21 km west of Whistler. Mount Garibaldi is a potentially active Stratovolcano in the Squamish-Lillooet Regional District of British Columbia, north of Vancouver, Mount Price may refer to Mount Price (Antarctica Mount Price (British Columbia in British Columbia Canada Mount Mount Meager, also called the Meager Group, Meager Mountain, Mount Meager Volcanic Complex or Meager Creek Volcanic Field (sometimes mistakenly The eruption styles in the belt range from effusive to explosive, with compositions from basalt to rhyolite. Effusive eruptions are a Volcanic phenomenon in some ways the opposite of Explosive eruptions An effusive eruption is characterized by an outpouring of low Viscosity An explosive eruption is a Volcanic term to describe a violent explosive type of Eruption. Basalt (bəˈsɔːlt ˈbeisɔːlt ˈbæsɔːlt is a common Extrusive Volcanic rock. This page is about a volcanic rock For the ghost town see Rhyolite Nevada, and for the satellite system see Rhyolite/Aquacade. Morphologically, centers include calderas, cinder cones, stratovolcanoes and small isolated lava masses. A caldera is a cauldron-like volcanic feature formed by the collapse of land following a volcanic eruption A cinder cone or scoria cone is a steep conical Hill of volcanic fragments that accumulate around and downwind from a Volcanic vent. A stratovolcano, also called a composite volcano is a tall conical Volcano composed of many layers of hardened Lava, Tephra, and Volcanic Lava is molten rock expelled by a Volcano during an eruption When first expelled from a volcanic vent it is a Liquid at Temperatures Due to repeated continental and alpine glaciations, many of the volcanic deposits in the belt reflect complex interactions between magma composition, topography, and changing ice configurations. Magma (Plurals magmas and magmata) is molten rock that sometimes forms beneath the surface of the Earth (or any other Terrestrial planet The most recent major catastrophic eruption in the Garibaldi Volcanic Belt was the 2350 BP eruption of Mount Meager as well as Canada. Mount Meager, also called the Meager Group, Meager Mountain, Mount Meager Volcanic Complex or Meager Creek Volcanic Field (sometimes mistakenly It was similar the 1980 eruption of Mount St. Helens,[12] sending an ash column approximately 20 km high into the stratosphere. The 1980 eruption of Mount St Helens, a volcano located in Washington state in the United States was a major volcanic eruption. An eruption column consists of hot Volcanic ash emitted during an explosive Volcanic eruption. The stratosphere is the second major layer of Earth's atmosphere, just above the Troposphere, and below the Mesosphere. [13]
The Chilcotin Plateau Basalts are a north-south range of volcanoes in southern British Columbia running parallel to the Garibaldi Volcanic Belt. The Chilcotin Plateau Basalts, also called the Chilcotin Group, is a medium-sized Large igneous province that forms a Volcanic plateau running parallel Plate tectonics and hotspots Divergent plate boundaries At the British Columbia (ˌbrɪtɨʃ kəˈlʌmbiə ( BC) ( (la Colombie-Britannique C The Garibaldi Volcanic Belt is a north-south range of Volcanoes in southwestern British Columbia, Canada. The majority of the eruptions in this belt happened either 6–10 million years ago (Miocene) or 2–3 million years ago (Pliocene), although there have been some slightly more recent eruptions (in the Pleistocene). The Miocene is a geological epoch of the Neogene period and extends from about 23 The Pliocene epoch (spelled Pleiocene in some older texts is the period in the Geologic timescale that extends The Pleistocene ('plaɪstəsin is the epoch from 18 million to 10000 years BP covering the world's recent period [14] It is thought to have formed as a result of back-arc extension behind the Cascadia subduction zone. Back-arc basins (or retro-arc basins are geologic features submarine basins associated with Island arcs and Subduction zones. The Cascadia Subduction zone is a Subduction zone, a type of convergent plate boundary that stretches from northern Vancouver Island to [14] Volcanoes in this belt include Mount Noel, the Clisbako Caldera Complex, Lightning Peak, Black Dome Mountain and many lava flows. Mount Noel is a Miocene volcanic complex in the Chilcotin Plateau Basalts in British Columbia, Canada, located 7 km southwest of Bralorne The Clisbako Caldera Complex (also called the Cheslatta Caldera Complex) is a large dissected Caldera complex in the Chilcotin Plateau Basalts and Lightning Peak is an eroded volcanic outcrop in the Chilcotin Plateau Basalts, British Columbia, Canada, located 31 km west of Needles See Black Dome for other mountains of this name Black Dome Mountain is the most northerly summit of the Camelsfoot Range, which
The Anahim Volcanic Belt is a line of volcanoes stretching from just north of Vancouver Island to near Quesnel, British Columbia, Canada. The Anahim Volcanic Belt is a 600- Kilometre -long Volcanic belt, stretching from just north of Vancouver Island to near Quesnel, British The Anahim Volcanic Belt is a 600- Kilometre -long Volcanic belt, stretching from just north of Vancouver Island to near Quesnel, British Vancouver Island is a large Island in British Columbia, Canada, one of several North American regions named after George Vancouver, the British Quesnel (kwəˈnɛl is a small city that is part of the Cariboo District of British Columbia, Canada. British Columbia (ˌbrɪtɨʃ kəˈlʌmbiə ( BC) ( (la Colombie-Britannique C Country to "Dominion of Canada" or "Canadian Federation" or anything else please read the Talk Page These volcanoes were formed 8-1 million years ago and the Nazko Cone which last erupted only 7,200 years ago. Nazko Cone is a small potentially active Basaltic Cinder cone in central British Columbia, Canada, located 75 km west of Quesnel [15] The volcanoes generally get younger as you go from the coast to the interior. These volcanoes are thought to have formed as a result of the North American Plate sliding westward over a small hotspot, called the Anahim hotspot. The North American Plate is a Tectonic plate covering most of North America, Greenland and part of Siberia. In Geology, a hotspot is a location on the Earth's surface that has experienced active volcanism for a long period of time The Anahim hotspot is a volcanic hotspot in central British Columbia, Canada. [15] The hotspot is considered similar to the one feeding the Hawaiian Islands[15] The belt is defined by three large shield volcanoes (Rainbow, Ilgachuz and the Itcha Ranges) and 37 Quaternary basalt centers. The Hawaiian Islands, once known as the Sandwich Islands, form an Archipelago of 19 Islands and Atolls numerous smaller A shield volcano is a large Volcano with shallow-sloping sides The Rainbow Range is a Mountain range in British Columbia, Canada, located northwest of Anahim Lake. The Ilgachuz Range is a name given to an extinct Shield volcano in British Columbia, Canada. The Itcha Range is a Mountain range on the Chilcotin Plateau of the West-Central Interior of British Columbia, Canada. Overview The term Quaternary ("fourth" was proposed by Giovanni Arduino in 1759 for alluvial deposits in the Po river valley in northern Basalt (bəˈsɔːlt ˈbeisɔːlt ˈbæsɔːlt is a common Extrusive Volcanic rock.
Eruptions of basaltic to rhyolitic volcanoes and hypabyssal rocks of the Alert Bay Volcanic Belt in northern Vancouver Island are probably linked with the subducted margin flanked by the Explorer and Juan de Fuca plates at the Cascadia subduction zone. Basalt (bəˈsɔːlt ˈbeisɔːlt ˈbæsɔːlt is a common Extrusive Volcanic rock. This page is about a volcanic rock For the ghost town see Rhyolite Nevada, and for the satellite system see Rhyolite/Aquacade. The Alert Bay Volcanic Belt is a heavily eroded Neogene Volcanic belt in northern Vancouver Island, British Columbia, Canada. Vancouver Island is a large Island in British Columbia, Canada, one of several North American regions named after George Vancouver, the British The Explorer Plate is an oceanic Tectonic plate beneath the Pacific Ocean off the west coast of Vancouver Island, Canada. The Juan de Fuca Plate, named after the explorer, is a Tectonic plate arising from the Juan de Fuca Ridge, and subducting under the northerly The Cascadia Subduction zone is a Subduction zone, a type of convergent plate boundary that stretches from northern Vancouver Island to It appears to have been active during the Pliocene and Pleistocene time. The Pliocene epoch (spelled Pleiocene in some older texts is the period in the Geologic timescale that extends The Pleistocene ('plaɪstəsin is the epoch from 18 million to 10000 years BP covering the world's recent period However, no Holocene eruptions are known, and volcanic activity in the belt has likely ceased. The Holocene is a Geological epoch which began approximately 10000 years ago (about 8000 BC
Indonesia
Mount Merapi as seen from Loon Mountain
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The volcanoes in Indonesia are among the most active of the Pacific Ring of Fire. Mount Merapi, Gunung Merapi in Indonesian language, is a conical Volcano located on the border between Central Java and Yogyakarta The Republic of Indonesia ( (Republik Indonesia is a Country in Southeast Asia. They are formed due to subduction zones between the Eurasian Plate and the Indo-Australian Plate. In Geology, a subduction zone is an area on Earth where two tectonic plates meet and move towards one another with one sliding underneath the other The Eurasian Plate is a Tectonic plate which includes most of the continent of Eurasia (a landmass consisting of the traditional Continents of Europe The Indo-Australian Plate is a major Tectonic plate that includes the continent of Australia and surrounding Ocean, and extends northwest to include the Some of the volcanoes are notable for their eruptions, for instance, Krakatau for its global effects in 1883, Lake Toba for its supervolcanic eruption estimated to have occurred 74,000 BP which was responsible for six years of volcanic winter, and Mount Tambora for the most violent eruption in recorded history in 1815. Krakatoa ( Indonesian: Krakatau) also spelled Krakatao or Krakatowa, is a volcanic island in the Sunda Strait Lake Toba ( Danau Toba) is a Lake and Supervolcano, 100 km long and 30 km wide and 505 m A supervolcano or super volcanic eruption is a Volcanic eruption which is Orders of magnitude greater than any volcano in historic times (generally accepted to be Before Present (BP years are a time scale used in Archaeology, Geology, and other scientific disciplines to specify when events in the past occurred A volcanic winter is the reduction in temperature caused by Volcanic ash and droplets of Sulfuric acid obscuring the Sun and lowering the Albedo Mount Tambora (or Tomboro) is an active Stratovolcano, also known as a Composite volcano, on Sumbawa island Indonesia. Year 1815 ( MDCCCXV) was a Common year starting on Sunday (link will display the full calendar of the Gregorian calendar (or a Common year
The most active volcanoes are Kelut and Merapi on Java island which have been responsible for thousands of deaths in the region. Kelud ( Klut Cloot Kloet Kloete or Kelut) is a Volcano located in East Java on Java in Indonesia. Merapi may refer to Mount Merapi, an active volcano in Central Java Indonesia Mount Marapi (also known as Mount Merapi) an Java (Jawa is an Island of Indonesia and the site of its Capital city Jakarta. Since AD 1000, Kelut has erupted more than 30 times, of which the largest eruption was at scale 5 on the Volcanic Explosivity Index, while Merapi has erupted more than 80 times. The Volcanic Explosivity Index (VEI was devised by Chris Newhall of the U The International Association of Volcanology and Chemistry of the Earth's Interior has named Merapi as a Decade Volcano since 1995 because of its high volcanic activity. The International Association of Volcanology and Chemistry of the Earth's Interior, or IAVCEI, is an association that represents the primary international focus for research The Decade Volcanoes are 16 Volcanoes identified by the International Association of Volcanology and Chemistry of the Earth's Interior (IAVCEI as being worthy Year 1995 ( MCMXCV) was a Common year starting on Sunday. Events of 1995
Japan
Ten percent of the world's active volcanoes are found in Japan, which lies in a zone of extreme crustal instability. Plate tectonics and hotspots Divergent plate boundaries At the They are formed by subduction of the Pacific and Philippine plates. In Geology, a subduction zone is an area on Earth where two tectonic plates meet and move towards one another with one sliding underneath the other The Pacific Plate is an oceanic Tectonic plate beneath the Pacific Ocean. The Philippine Plate is a Tectonic plate beneath the Pacific Ocean to the east of the Philippines. As many as 1,500 earthquakes are recorded yearly, and magnitudes of four to six on the Richter scale are not uncommon. An earthquake is the result of a sudden release of energy in the Earth 's crust that creates Seismic waves Earthquakes are recorded with a Seismometer The Richter magnitude scale, or more correctly local magnitude M L scale assigns a single number to quantify the amount of seismic energy released Minor tremors occur almost daily in one part of the country or another, causing slight shaking of buildings. Major earthquakes occur infrequently; the most famous in the twentieth century were: the great Kantō earthquake of 1923, in which 130,000 people died; and the Great Hanshin Earthquake of 17th January 1995, in which 6,434 people died. The struck the Kantō plain on the Japanese main island of Honshū at 1158 on the morning of September 1, 1923. The Great Hanshin Earthquake, or Kobe earthquake as it is more commonly known outside of Japan, was an Earthquake in Japan that occurred on Tuesday Undersea earthquakes also expose the Japanese coastline to danger from tsunamis. A tsunami ((tsuːˈnɑːmi is a series of waves created when
Mount Bandai is one of Japan's most noted volcanoes, rises above the north shore of Lake Inawashiro. is the highest Mountain in Japan at.An Active volcano that last erupted in 1707–08 it straddles the boundary of Shizuoka and is a Lake near Mt Fuji, Japan. Located in Fujikawaguchiko, Yamanashi, it is the most popular of the Fuji Five Lakes in terms of tourists is a Volcano in Fukushima Prefecture, Japan In a major eruption on July 15, 1888 the north and east parts of the caldera collapsed in a is the fourth-largest lake in Japan, located in the middle of Fukushima Prefecture, south of Mount Bandai. Mount Bandai is formed of several overlapping stratovolcanoes, the largest of which is O-Bandai forming a complex volcano. A stratovolcano, also called a composite volcano is a tall conical Volcano composed of many layers of hardened Lava, Tephra, and Volcanic A complex volcano, also called a compound volcano is a Volcano with more than one feature. O-Bandai volcano was constructed within a horseshoe-shaped caldera that formed about 40,000 years when an earlier volcano collapsed, forming the Okinajima debris avalanche, which traveled to the southwest and was accompanied by a plinian eruption. A caldera is a cauldron-like volcanic feature formed by the collapse of land following a volcanic eruption Plinian eruptions are Volcanic eruptions marked by their similarity to the eruption of Mt Four major phreatic eruptions have occurred during the past 5,000 years, two of them in historical time, in 806 and 1888. A Phreatic eruption, also called an ultravulcanian eruption, occurs when rising Magma makes contact with ground or surface water Events By Place Asia Emperor Heizei succeeds Emperor Kammu as Emperor of Japan. Year 1888 ( MDCCCLXXXVIII) was a Leap year starting on Sunday (click on link for calendar of the Gregorian calendar (or a Seen from the south, Bandai presents a conical profile, but much of the north side of the volcano is missing as a result of the collapse of Ko-Bandai volcano during the 1888 eruption, in which a debris avalanche buried several villages and formed several large lakes. A lake (from Latin lacus) is a Terrain feature (or Physical feature) a body of Liquid on the surface of a world that is localized to the
Nearly a century ago, the north flank of Mount Bandai collapsed during an eruption quite similar to the May 18, 1980 eruption of Mount St. Helens. Events 1152 - Henry II of England marries Eleanor of Aquitaine. The 1980 eruption of Mount St Helens, a volcano located in Washington state in the United States was a major volcanic eruption. After a week of seismic activity, a large earthquake on July 15, 1888, was followed by a tremendous noise and a large explosion. Eyewitnesses heard about 15 to 20 additional explosions and observed that the last one was projected almost horizontally to the north.
Mount Fuji is Japan's highest and most noted volcano. is the highest Mountain in Japan at.An Active volcano that last erupted in 1707–08 it straddles the boundary of Shizuoka and The modern postglacial stratovolcano is constructed above a group of overlapping volcanoes, remnants of which form irregularities on Fuji's profile. Growth of the younger Mount Fuji began with a period of voluminous lava flows from 11,000 to 8,000 years ago, accounting for four-fifths of the volume of the younger Mount Fuji. Minor explosive eruptions dominated activity from 8,000 to 4,500 years ago, with another period of major lava flows occurring from 4,500 to 3,000 years ago. An explosive eruption is a Volcanic term to describe a violent explosive type of Eruption. Lava is molten rock expelled by a Volcano during an eruption When first expelled from a volcanic vent it is a Liquid at Temperatures Subsequently, intermittent major explosive eruptions occurred, with subordinate lava flows and small pyroclastic flows. A pyroclastic flow (also known as a pyroclastic density current) is a common and devastating result of some volcanic eruptions. Summit eruptions dominated from 3,000 to 2,000 years ago, after which flank vents were active. The extensive basaltic lava flows from the summit and some of the more than 100 flank cones and vents blocked drainages against the Tertiary Misaka Mountains on the north side of the volcano, forming the Fuji Five Lakes. Basalt (bəˈsɔːlt ˈbeisɔːlt ˈbæsɔːlt is a common Extrusive Volcanic rock. The chuprichondira geological time interval covers roughly the time span between the demise of the non- avian Dinosaurs and beginning of the most recent Ice Age, approximately Fuji Five Lakes (富士五湖 fujigoko is the name of the area located at the base of Mount Fuji in the Yamanashi prefecture of Japan The last eruption of this dominantly basaltic volcano in 1707 ejected andesitic pumice and formed a large new crater on the east flank. Year 1707 ( MDCCVII) was a Common year starting on Saturday (link will display the full calendar of the Gregorian calendar (or a For the extinct cephalopod genus see Andesites. Andesite (ˈændəsaɪt is an igneous, Volcanic rock, of intermediate Pumice is a textural term for a volcanic rock that is a solidified frothy lava composed of highly microvesicular glass Pyroclastic with very thin translucent A volcanic crater is a circular depression in the ground caused by volcanic activity Scientists are saying that there may be some minor volcanic activity in the next few years. A scientist, in the broadest sense refers to any person that engages in a systematic activity to acquire Knowledge or an individual that engages in such practices
Mexico
Volcanoes of Mexico are related to subduction of the Cocos and Rivera plates to the east, which has produced large explosive eruptions. For other topics with the same name see " Sierra Nevada " In Geology, a subduction zone is an area on Earth where two tectonic plates meet and move towards one another with one sliding underneath the other The Cocos Plate is an oceanic Tectonic plate beneath the Pacific Ocean off the west coast of Central America, named for Cocos Island, which rides The Rivera Plate is a small Tectonic plate (a microplate located off the west coast of Mexico, just south of the Baja California Peninsula. An explosive eruption is a Volcanic term to describe a violent explosive type of Eruption. Most active volcanoes in Mexico occur in the Trans-Mexican Volcanic Belt, which extends 900 kilometres (559 mi) from west to east across central-southern Mexico. For other topics with the same name see " Sierra Nevada " A few other active volcanoes in northern Mexico are related to extensional tectonics of the Basin and Range Province, which split the Baja California peninsula from the mainland. The Basin and Range Province is a large geologic province which includes parts of the southwestern United States and northwestern Mexico, typified by Basin and [16] Popocatépetl lies in the eastern half of the Trans-Mexican Volcanic Belt, which is the seconed highest peak in Mexico after the Pico de Orizaba. Popocatépetl (commonly referred to as Popo, El Popo or Don Goyo) (popokaˈtepetɬ is an active Volcano and at 5426 m The Pico de Orizaba, or Citlaltépetl (from Nahuatl citlal(in = star and tepētl = mountain is a Stratovolcano, the highest It is one of most active volcanoes in Mexico, having had more than 20 major eruptions since the arrival of the Spanish in 1519. The 1982 eruption of El Chichón killed about 2,000 people who lived near the volcano. Year 1982 ( MCMLXXXII) was a Common year starting on Friday (link displays the 1982 Gregorian calendar) El Chichón is an active Volcano in northwestern Chiapas, Mexico. It created a 1 kilometre (1 mi) wide caldera that filled with an acidic crater lake. A caldera is a cauldron-like volcanic feature formed by the collapse of land following a volcanic eruption In Computer science, ACID ( Atomicity Consistency Isolation Durability) is a set of properties that guarantee that Database transactions are Crater Lake is a Caldera Lake located in the US state of Oregon. Prior to 2000, this relatively unknown volcano was heavily forested and of no greater height than adjacent non-volcanic peaks. [16]
Philippines
The 1991 eruption of Mount Pinatubo is the world's second largest terrestrial eruption of the 20th century. Mount Pinatubo is an active Stratovolcano located on the island of Luzon Successful predictions of the onset of the climactic eruption led to the evacuation of tens of thousands of people from the surrounding areas, saving many lives, but as the surrounding areas were severely damaged by pyroclastic flows, ash deposits, and later, lahars caused by rainwater remobilising earlier volcanic deposits, thousands of houses were destroyed. A pyroclastic flow (also known as a pyroclastic density current) is a common and devastating result of some volcanic eruptions. A lahar is a type of Mudflow / Landslide composed of Pyroclastic material and Water that flows down from a Volcano, typically
Mayon Volcano is the Philippines' most active volcano. The Mayon Volcano is an active Stratovolcano in the Philippines on the Island of Luzon, in the province of Albay The volcano has steep upper slopes that average 35–40 degrees and is capped by a small summit crater. A volcanic crater is a circular depression in the ground caused by volcanic activity The historical eruptions of this basaltic-andesitic volcano dates back to 1616 and ranges from Strombolian to basaltic Plinian eruptions. Basalt (bəˈsɔːlt ˈbeisɔːlt ˈbæsɔːlt is a common Extrusive Volcanic rock. For the extinct cephalopod genus see Andesites. Andesite (ˈændəsaɪt is an igneous, Volcanic rock, of intermediate Strombolian eruptions are relatively low-level volcanic eruptions named after the Italian volcano named Stromboli, where such eruptions consist of Plinian eruptions are Volcanic eruptions marked by their similarity to the eruption of Mt Eruptions occur predominately from the central conduit and have also produced lava flows that travel far down the flanks. Pyroclastic flows and mudflows have commonly swept down many of the approximately 40 ravines that radiate from the summit and have often devastated populated lowland areas. A pyroclastic flow (also known as a pyroclastic density current) is a common and devastating result of some volcanic eruptions. Mudslide redirects here it is also the name of a cocktail. A mudflow or mudslide is the most rapid (up to 80 km/h / 50 mph
Taal Volcano has had 33 recorded eruptions since 1572. Taal Volcano is an active Volcano on the island of Luzon in the Philippines. A devastating eruption occurred in 1911, which claimed more than a thousand lives. The deposits of that eruption consisted of a yellowish, fairly decomposed (non-juvenile) tephra with a high sulfur content. The most recent period of activity lasted from 1965 to 1977, and was characterized by the interaction of magma with the lake water, which produced violent phreatic explosions. Year 1965 ( MCMLXV) was a Common year starting on Friday (link will display full calendar of the 1965 Gregorian calendar. Also 1977 (album by Ash. Year 1977 ( MCMLXXVII) was a Common year starting on Saturday (link displays A Phreatic eruption, also called an ultravulcanian eruption, occurs when rising Magma makes contact with ground or surface water Although the volcano has been dormant since 1977, it has shown signs of unrest since 1991, with strong seismic activity and ground fracturing events, as well as the formation of small mud geysers on parts of the island.
Kanlaon is the most active volcano in central Philippines and has erupted 25 times since 1866. Kanlaon Volcano, or Mount Kanlaon (also spelled Canlaon) is a Stratovolcano on Negros island in the Philippines Year 1866 ( MDCCCLXVI) was a Common year starting on Monday (link will display the full calendar of the Gregorian calendar (or a Common Eruptions are typically phreatic explosions of small-to-moderate size that produce minor ashfalls near the volcano. On August 10, 1996, Kanlaon erupted without warning, killing British student Julian Green and Filipinos Noel Tragico and Neil Perez, who were among 24 mountainclimbers who were trapped near the summit.
Kamchatka Peninsula
The Kamchatka Peninsula in the Russian Far East, is one of the most various and active volcanic areas in the world,[17] with an area of 472,300 km². Russian Far East (Да́льний Восто́к Росси́и ˈdalʲnʲɪj vʌˈstok rʌˈsʲiɪ is a term that refers to the Russian part of the Far East, i It lies between the Pacific Ocean to the east and the Okhotsk Sea to the west. The Pacific Ocean is the largest of the Earth 's Oceanic divisions The Sea of Okhotsk ( Russian: Охо́тское мо́ре English Transliteration: Okhotskoye More) is a part of the western Pacific Ocean, Immediately offshore along the Pacific coast of the peninsula runs the 10,500 meter deep Kuril-Kamchatka Trench. The Kuril-Kamchatka Trench or Kuril Trench ( Russian Курило-Камчатский жёлоб) is an Oceanic trench with a maximum depth This is where rapid subduction of the Pacific Plate fuels the intense volcanism. In Geology, a subduction zone is an area on Earth where two tectonic plates meet and move towards one another with one sliding underneath the other The Pacific Plate is an oceanic Tectonic plate beneath the Pacific Ocean. Almost all types of volcanic activity are present, from stratovolcanoes and shield volcanoes to Hawaiian-style fissure eruptions. A stratovolcano, also called a composite volcano is a tall conical Volcano composed of many layers of hardened Lava, Tephra, and Volcanic A shield volcano is a large Volcano with shallow-sloping sides [17]
There are over 30 active volcanoes and hundreds of dormant and extinct volcanoes in two major volcanic belts. A volcanic belt is a large volcanically active region Other terms are used for smaller areas of activity such as volcanic fields Volcanic belts are found above zones The most recent activity takes place in the eastern belt,[17] starting in the north at the Shiveluch volcanic complex, which lies at the junction of the Aleutian and Kamchatka volcanic arcs. Shiveluch (Шивелуч is the northernmost active Volcano in Kamchatka Krai, Russia. The Aleutian Islands (possibly from Chukchi aliat, " Island " are a chain of more than 300 small volcanic islands forming a Volcanic A volcanic arc is a chain of volcanic islands or Mountains formed by Plate tectonics as an oceanic Tectonic plate subducts under Just to the south is the famous Klyuchi volcanic group, comprising the twin volcanic cones of Kliuchevskoi and Kamen, the huge volcanic complexes of Tolbachik and Ushkovsky, and a number of other large stratovolcanoes. Klyuchi may refer to Klyuchi Kamchatka Krai, a former town in Kamchatka Oblast Russia since 2004&mdasha settlement since 2007&mdashin Kamchatka Krai Volcanic cones are among the simplest Volcano formations in the world Klyuchevskaya Sopka (Ключевская сопка is a Stratovolcano, and the highest mountain on the Kamchatka Peninsula of Russia, and the highest Kamen (Камень is a volcano located in the southern part of Kamchatka Peninsula, Russia, flanked by Bezymianny and Kluchevskaya. Tolbachik is a volcanic complex on the Kamchatka Peninsula in the far east Ushkovsky (formerly known as Plosky) is a large volcanic massif located in the central part of Kamchatka Peninsula, Russia. The only active volcano in the central belt is found west of here, the huge remote Ichinsky. Ichinsky is a large Stratovolcano located in the central part of Kamchatka Peninsula, Russia. Farther south, the eastern belt continues to the southern slope of Kamchatka, topped by loads of stratovolcanoes. A stratovolcano, also called a composite volcano is a tall conical Volcano composed of many layers of hardened Lava, Tephra, and Volcanic
New Zealand
- See also: Earthquakes in New Zealand and Volcanism in New Zealand
New Zealand contains the world's strongest concentration of youthful rhyolitic volcanoes, and voluminous sheets blanket much of North Island. Earthquakes regularly occur in New Zealand as the country forms part of the Pacific Ring of Fire, which is geologically active. Geology One of the world's largest eruptions in the last 5000 years occurred around 200 AD when Lake Taupo erupted altering the geology of much of the North Island New Zealand is an Island country in the south-western Pacific Ocean comprising two main landmasses (the North Island and the South Island This page is about a volcanic rock For the ghost town see Rhyolite Nevada, and for the satellite system see Rhyolite/Aquacade. The North Island is one of the two main islands of New Zealand, the other being the South Island. The earliest historically-dated eruption was at Whakaari/White Island in 1826. Whakaari/White Island is one of two New Zealand islands known as White Island For the game see 1826 (board game. Year 1826 ( MDCCCXXVI) was a Common year starting on Sunday (link will display [18] Much of the region north of New Zealand's North Island is made up of seamounts and small islands, including 16 submarine volcanoes. A seamount is a Mountain rising from the Ocean Seafloor that does not reach to the water's surface ( Sea level) and thus is not an Island An island (ˈaɪlənd or isle (/ˈaɪl/ is any piece of land that is completely surrounded by water in two dimensions above high tide and isolated from other significant Submarine volcanoes are underwater fissures in the earth's surface from which magma can erupt In the last 1. 6 million years, most of New Zealand's volcanism is from the Taupo Volcanic Zone. The Taupo Volcanic Zone is a highly active volcanic area in the North Island of New Zealand.
Mount Ruapehu at the southern end of the Taupo Volcanic Zone, is one of the most active volcanoes. Mount Ruapehu, or just Ruapehu, is an active Stratovolcano at the southern end of the Taupo Volcanic Zone in New Zealand. The Taupo Volcanic Zone is a highly active volcanic area in the North Island of New Zealand. [19] It began erupting at least 250,000 years ago. In recorded history, major eruptions have been about 50 years apart,[19] in 1895, 1945 and 1995-1996. Year 1895 ( MDCCCXCV) was a Common year starting on Tuesday (link will display full calendar of the Gregorian calendar (or a Common year Year 1945 ( MCMXLV) was a Common year starting on Monday (link will display the full calendar Year 1995 ( MCMXCV) was a Common year starting on Sunday. Events of 1995 Year 1996 ( MCMXCVI) was a Leap year starting on Monday (link will display full 1996 Gregorian calendar) Minor eruptions are frequent, with at least 60 since 1945. Some of the minor eruptions in the 1970s generated small ash falls and lahars (mudflows) that damaged skifields. This article is about the Decade 1970-1979 For the Year 1970 see 1970. Volcanic ash consists of small Tephra, which are bits of pulverized rock and glass created by volcanic eruptions less than in diameter A lahar is a type of Mudflow / Landslide composed of Pyroclastic material and Water that flows down from a Volcano, typically [20] Between major eruptions, a warm acidic crater lake forms, fed by melting snow. In Computer science, ACID ( Atomicity Consistency Isolation Durability) is a set of properties that guarantee that Database transactions are Major eruptions may completely expel the lake water. Where a major eruption has deposited a tephra dam across the lake's outlet, the dam may collapse after the lake has refilled and risen above the level of its normal outlet, the outrush of water causing a large lahar. Tephra is air-fall material produced by a volcanic eruption regardless of composition or fragment size In 2000, the ERLAWS system was installed on the mountain to detect such a collapse and alert the relevant authorities. ERLAWS, the Eastern Ruapehu Lahar Alarm and Warning System is a Lahar warning system installed on Mount Ruapehu following volcanic eruptions in 1995–1996
The Auckland volcanic field on the North Island of New Zealand, has produced a diverse array of explosive craters, scoria cones, and lava flows. The Auckland volcanic field is a generally Monogenetic volcanic field in the North Island of New Zealand. Currently dormant, the field is likely to erupt again with the next "hundreds to thousands of years", a very short timeframe in geologic terms. [21] The field contains at least 40 volcanoes, most recently active about 600 years ago at Rangitoto, erupting 2. Rangitoto Island is a volcanic Island in the Hauraki Gulf near Auckland, New Zealand. 3 cubic kilometers of lava.
Chile
Volcanoes of Chile are related to subduction of the Nazca Plate to the east. Llaima Volcano is one of the largest and most active volcanoes in Chile. In Geology, a subduction zone is an area on Earth where two tectonic plates meet and move towards one another with one sliding underneath the other The Nazca Plate, named after the Nazca region of southern Peru, is an oceanic Tectonic plate in the eastern Pacific Ocean basin off the west Villarrica, one of Chile's most active volcanoes, rises above Villarrica Lake and the town of Villarrica. Snow-covered Villarrica, one of Chile 's most active Volcanoes rises above the lake and town of the same name Chile, officially the Republic of Chile ( Spanish:) is a country in South America occupying a long and narrow Coastal strip wedged between the Lake Villarrica, also known as Mallolafquén Villarrica is a city in southern Chile located on the western shore of Villarrica Lake in the Province of Cautín It is the westernmost of three large stratovolcanoes that trend perpendicular to the Andean chain. A stratovolcano, also called a composite volcano is a tall conical Volcano composed of many layers of hardened Lava, Tephra, and Volcanic A 6-kilometer wide caldera formed during the late Pleistocene, >0. A caldera is a cauldron-like volcanic feature formed by the collapse of land following a volcanic eruption The Pleistocene ('plaɪstəsin is the epoch from 18 million to 10000 years BP covering the world's recent period 9 million years ago. A 2-kilometer-wide postglacial caldera is located at the base of the presently active, dominantly basaltic-to-andesitic cone at the NW margin of the Pleistocene caldera. About 25 scoria cones dot Villarica's flanks. Plinian eruptions and pyroclastic flows have been produced during the Holocene from this dominantly basaltic volcano, but historical eruptions have consisted largely of mild-to-moderate explosive activity with occasional lava effusion. Plinian eruptions are Volcanic eruptions marked by their similarity to the eruption of Mt A pyroclastic flow (also known as a pyroclastic density current) is a common and devastating result of some volcanic eruptions. Lahars from the glacier-covered volcano have damaged towns on its flanks. A lahar is a type of Mudflow / Landslide composed of Pyroclastic material and Water that flows down from a Volcano, typically
This year Chile has experienced two volcanic eruptions, the first one from Llaima Volcano (January 1) and Chaitén Volcano (May 1).
Antarctica
The southernmost end of the Pacific Ring of Fire is the continent Antarctica,[22] which includes many large volcanoes. Mount Erebus in Antarctica is the southernmost active Volcano on Earth Year 1972 ( MCMLXXII) was a Leap year starting on Saturday (link will display full calendar of the Gregorian calendar. The makeup and structure of the volcanoes in Antarctica change largely from the other places around the ring. In contrast, the Antarctic Plate is almost completely surrounded by extensional zones, with several mid-ocean ridges which encircle it, and there is only a small subduction zone at the tip of the Antarctic Peninsula, reaching eastward to the remote South Sandwich Islands. The Antarctic Plate is a Tectonic plate covering the Continent of Antarctica and extending outward under the surrounding Oceans The Antarctic A mid-ocean ridge or mid-oceanic ridge is an underwater Mountain range typically having a valley known as a Rift running along its axis formed by The Antarctic Peninsula is the northernmost part of the mainland of Antarctica, and almost the only part of that continent that extends outside the Antarctic Circle South Georgia and the South Sandwich Islands ( SGSSI) is a British overseas territory in the southern Atlantic Ocean. [22] The most well known volcano in Antarctica is Mount Erebus, which is also the world's southernmost active volcano. Mount Erebus in Antarctica is the southernmost active Volcano on Earth [22]
The volcanoes of the Victoria Land area are the most well-known in Antarctica,[22] most likely because they are the most accessible. Victoria Land is a region of Antarctica bounded on the east by the Ross Sea and on the west by Wilkes Land. Much of Victoria Land is mountainous, developing the eastern section of the Transantarctic Mountains, and there are several scattered volcanoes including Mount Overlord and Mount Melbourne in the northern part. The three largest mountain ranges on the Antarctic continent are the Transantarctic Mountains, the West Antarctica Ranges, and the East Antarctica Ranges. Mount Overlord ( is a very large Mountain which is an Extinct volcano, situated at the northwest limit of Deception Plateau, 50 miles inland from the Mount Melbourne is a massive Volcanic cone of great beauty surmounting the projection of the coast between Wood Bay and Terra Nova Bay, in Victoria [22] Farther south are two more well-known volcanoes, Mount Discovery and Mount Morning, which are on the coast across from Mount Erebus and Mount Terror on Ross Island. Mount Discovery is a conspicuous isolated Stratovolcano, lying at the head of McMurdo Sound and east of Koettlitz Glacier, overlooking the NW portion of Mount Morning is a dome-shaped Stratovolcano standing WSW of Mount Discovery and east of Koettlitz Glacier in Victoria Land. Mount Erebus in Antarctica is the southernmost active Volcano on Earth For mountains named Mount Terror see Mount Terror. Mount Terror is a large Shield volcano that forms the eastern part of Ross Island Ross Island is an island formed by four Volcanoes in the Ross Sea by Antarctica, off the coast of Victoria Land in McMurdo Sound The volcanism in this area is caused by rifting along a number of rift zones increasing mainly north-south similar to the coast. In Geology, a rift is a place where the Earth 's crust and Lithosphere are being pulled apart and is an example of Extensional tectonics A rift zone is a feature of some Volcanoes especially the Shield volcanoes of Hawaii, in which a linear series of fissures in the volcanic [22]
Marie Byrd Land contains the largest volcanic region in Antarctica, covering a length of almost 600 miles (960 km) along the Pacific coast. Marie Byrd Land is the portion of Antarctica lying east of the Ross Ice Shelf and the Ross Sea and south of the Pacific Ocean, extending eastward [22] The volcanism is the result of rifting along the vast West Antarctic Rift, which extends from the base of the Antarctic Peninsula to the surrounding area of Ross Island, and the volcanoes are found along the northern edge of the rift. The West Antarctic Rift is a major active rift valley lying between East and West Antarctica. The Antarctic Peninsula is the northernmost part of the mainland of Antarctica, and almost the only part of that continent that extends outside the Antarctic Circle Ross Island is an island formed by four Volcanoes in the Ross Sea by Antarctica, off the coast of Victoria Land in McMurdo Sound [22] Protruding up through the ice are a large number of major shield volcanoes, including Mount Sidley, which is the highest volcano in Antarctica. A shield volcano is a large Volcano with shallow-sloping sides Mount Sidley is the highest Volcano in Antarctica, a member of the Volcanic Seven Summits. [22] Although a number of the volcanoes are relatively young and are potentially active (Mount Berlin, Mount Takahe, Mount Waesche, and Mount Siple), others such as Mount Andrus and Mount Hampton are over 10 million years old, yet maintain uneroded constructional forms. Mount Berlin is the sixth highest volcano in Antarctica, located 16 km west of Mount Moulton in Marie Byrd Land near the eastern coast of the Ross Mount Takahe is a large snow covered Shield volcano standing 64 km SE of Toney Mountain in Marie Byrd Land, Antarctica. Mount Waesche is a large and prominent Mountain of volcanic origin standing immediately SW of Mount Sidley and marking the southern end of the Executive Committee Mount Siple is a dormant Shield volcano, rising to and dominating the northwest part of Siple Island, which is separated from the Bakutis Coast Mount Andrus is a peak 32 km (2 mi SE of Mount Boennighausen in the SE extremity of Ames Range, in Marie Byrd Land, Antarctica Mount Hampton is a Mountain with a circular ice-filled crater occupying much of the summit area [22] The desert-like surroundings of the Antarctic interior, along with a very thick and stable ice sheet which encloses and protects the bases of the volcanoes, which decreases the speed of erosion by an issue of perhaps a thousand relative to volcanoes in moist temperate or tropical climates. Erosion is the carrying away or displacement of solids ( Sediment, Soil, rock and other particles usually by the agents of currents such as wind
See also
- Alpide belt
- Andesite line
- Geology of the Pacific Northwest
- Katsuhiko Ishibashi
- 2004 Indian Ocean Earthquake
References
- ^ U.S. Geological Survey Earthquakes FAQ. The Alpide belt is a Mountain range which extends along the southern margin of Eurasia. The andesite line is the most significant regional Geologic distinction in the Pacific Ocean basin The geology of the Pacific Northwest refers to the study of the composition (including rock, Minerals, and Soils) structure physical properties and the Katsuhiko Ishibashi is a Professor in the Research Center for Urban Safety and Security in the Graduate School of Science at Kobe University, Japan The 2004 Indian Ocean earthquake was an undersea Earthquake that occurred at 005853 UTC on December 26 2004 with an Epicentre off the west coast of
- ^ U.S. Geological Survey Earthquakes Visual Glossary.
- ^ Moving slabs [This Dynamic Earth, USGS].
- ^ Latest Earthquakes in the USA - Past 7 days, USGS.
- ^ Schulz, Sandra S. , and Robert E. Wallace, "The San Andreas Fault", USGS.
- ^ Earthquakes in the Queen Charlotte Islands Region 1984-1996 Retrieved on 2007-10-03
- ^ As given by What is a dollar worth?. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 42 BC - First Battle of Philippi: Triumvirs Mark Antony and Octavian fight an indecisive battle with Caesar's Federal Reserve Bank of Minneapolis. Retrieved on 2007-09-25. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 303 - On a voyage preaching the Gospel, Saint Fermin of Pamplona is beheaded in Amiens, France
- ^ Pilot Project: Mount Rainier Volcano Lahar Warning System Retrieved on 2007-10-06
- ^ a b c Skiing the Pacific Ring of Fire and Beyond: Alaska and Northwest Canada Retrieved on 2007-07-31
- ^ CAT.INIST: Canadian volcanoes Retrieved on 2007-07-31
- ^ Volcanoes of Canada Retrieved on 2007-06-24
- ^ a b c Calalogue of Canadian volcanoes - Garibaldi Volcanic Belt Retrieved on 2007-07-31
- ^ Catalogue of Canadian volcanoes: Mount Meager Retrieved on 2007-07-31
- ^ a b Catalogue of Canadian volcanoes - Chilcotin Plateau basalts Retrieved on 2007-07-31
- ^ a b c Catalogue of Canadian volcanoes - Anahim Volcanic Belt Retrieved on 2007-07-31
- ^ a b DESCRIPTION: Mexico Volcanoes and Volcanics Retrieved on 2007-10-14
- ^ a b c Skiing the Pacific Ring of Fire and Beyond: Kamchatka & Kuril Islands Retrieved on 2007-08-01
- ^ CVO Menu - New Zealand Volcanoes and Volcanics Retrieved on 2007-10-15
- ^ a b New Zealand Department of Conservation. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 105 BC - Battle of Arausio: The Cimbri inflict the heaviest defeat on the Roman army of Gnaeus Mallius Maximus Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 30 BC - Battle of Alexandria: Mark Antony achieves a minor victory over Octavian 's forces but most of his army subsequently Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 30 BC - Battle of Alexandria: Mark Antony achieves a minor victory over Octavian 's forces but most of his army subsequently Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 972 - Battle of Cedynia, the first documented victory of Polish forces takes place Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 30 BC - Battle of Alexandria: Mark Antony achieves a minor victory over Octavian 's forces but most of his army subsequently Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 30 BC - Battle of Alexandria: Mark Antony achieves a minor victory over Octavian 's forces but most of his army subsequently Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 30 BC - Battle of Alexandria: Mark Antony achieves a minor victory over Octavian 's forces but most of his army subsequently Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 30 BC - Battle of Alexandria: Mark Antony achieves a minor victory over Octavian 's forces but most of his army subsequently Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 1066 - Norman Conquest: Battle of Hastings - In England on Senlac Hill seven miles from Hastings, the forces Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 30 BC - Octavian (later known as Augustus enters Alexandria, Egypt, bringing it under the control of the Roman Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 533 - Byzantine General Belisarius makes his formal entry into Carthage, having conquered it from the Crater Lake. Retrieved on 2006-10-23. Year 2006 ( MMVI) was a Common year starting on Sunday of the Gregorian calendar. Events 4004 BC - Creation of the world begins according to the calculations of Archbishop James Ussher 42 BC -
- ^ New Zealand Department of Conservation. Central North Island Volcanoes. Retrieved on 2006-10-23. Year 2006 ( MMVI) was a Common year starting on Sunday of the Gregorian calendar. Events 4004 BC - Creation of the world begins according to the calculations of Archbishop James Ussher 42 BC -
- ^ Contingency Plan for the Auckland Volcanic Field (from the Auckland Regional Council website)
- ^ a b c d e f g h i j Skiing the Pacific Ring of Fire and Beyong: Antarctica Retrieved 2007-07-31
- Historic Earthquakes & Earthquake Statistics at the United States Geological Survey
- DESCRIPTION: "Ring of Fire", Plate Tectonics, Sea-Floor Spreading, Subduction Zones, "Hot Spots" at the USGS Cascades Volcano Observatory, Vancouver, Washington Web site. The Auckland Regional Council ( ARC) is the regional council (one of the Local government authorities of the Auckland Region. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 30 BC - Battle of Alexandria: Mark Antony achieves a minor victory over Octavian 's forces but most of his army subsequently
- Map of the Ring of Fire
- The Ring of Fire at work
- Physical World Map 2004-04-01 CIA World Factbook; Robinson Projection; standard parallels 38°N and 38°S
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