Giants kettle, also known as giants cauldrons or potholes, are cavities or holes which appear to have been drilled in the surrounding rocks by eddying currents of water-bearing stones, gravel and other detrital matter. A drill (from Dutch Drillen) is In Geology, rock is a naturally occurring aggregate of Minerals and/or Mineraloids The Earth's outer solid layer the ‘ Lithosphere In Fluid dynamics, an eddy is the swirling of a Fluid and the reverse current created when the fluid flows past an obstacle Gravel is rock that is of a specific Particle size range In Geology, gravel is any loose rock that is larger than two millimeters (2mm Detritus (adjective detrital) is a geological term used to describe particles of rock derived from pre-existing rock through processes of Weathering and
The size varies from a few inches to several feet in depth and diameter. The most common occurrence is in shields, where there are ancient rocks (granite, gneiss) with different resistance to erosion, so strong pebbles fall in a small cavity and swirl making this cavity wider and deeper. A shield is generally a large area of exposed Precambrian Crystalline igneous and high-grade metamorphic rocks that form tectonically Granite (ˈɡrænɪt is a common and widely occurring type of intrusive, Felsic, igneous rock. Gneiss (ˈnaɪs is a common and widely distributed type of rock formed by high-grade regional metamorphic processes from preexisting formations that were originally In areas where there are diamonds and quartz rocks, the hardness of these rocks cave potholes and sometimes remain trapped in the bottom of it. Hardness of pebbles must be the same or higher than the bottom of stream where the kettle is forming. That is why these potholes are a good place to find diamonds (the hardest rock in Earth) and also explains the name of some potholes in the Blyde River Canyon of South Africa (Bourke's Luck Potholes) as the image shows. The Blyde River Canyon is a significant natural feature of South Africa, located in Mpumalanga, and forming the northern part of the Drakensberg The Republic of South Africa (also known by other official names) is a country located at the southern tip of the continent of Africa A famous locality for giants kettles is the GletscherGarten of Lucerne (Switzerland), where there are 32 giants kettles, the largest being 8 m (26 ft) wide and 9 m (30 ft) deep; they are also common in Germany, Norway, Sweden (jättegryta), Finland (hiidenkirnu; hiisi's churn) and in the United States. Lucerne ( Italian Lucerna) is a city in Switzerland. It is the capital of the Canton of Lucerne Switzerland (English pronunciation; Schweiz Swiss German: Schwyz or Schwiiz Suisse Svizzera Svizra officially the Swiss Confederation Germany, officially the Federal Republic of Germany ( ˈbʊndəsʁepuˌbliːk ˈdɔʏtʃlant is a Country in Central Europe. Norway ( Norwegian: Norge ( Bokmål) or Noreg ( Nynorsk) officially the Kingdom of Norway, is a Constitutional "Sverige" redirects here For other uses see Sweden (disambiguation and Sverige (disambiguation. Finland, officially the Republic of Finland ( is a Nordic country situated in the Fennoscandian region of northern Europe. Hiisi (root hiite-) are a kind of Tutelary spirits in mythologies of the Baltic Sea area especially in Finland. A butter churn is a mechanical device used to agitate Milk cream until it becomes Butter. The United States of America —commonly referred to as the It appears that water, produced by the thawing of the ice and snow, forms streams on the surface of the glacier, which, having gathered into their courses a certain amount of morainic debris, are finally cast down a crevasse as a swirling cascade or moulin. Ice is a Solid phase, usually crystalline, of a Non-metalic substance that is liquid or gas at Room temperature, such as Ammonia "Snowfall" redirects here For other uses see Snow (disambiguation or Snowfall (disambiguation. A stream is a body of Water with a current, confined within a bed and stream-banks Moraine refers to any glacially formed accumulation of unconsolidated glacial debris (soil and rock which can occur in currently glaciated and formerly glaciated regions such as those A crevasse is a Fracture in a Glacier caused by a large Tensile stress at or near the glacier's surface A moulin or glacier mill is a narrow tubular chute hole or Crevasse through which water enters a Glacier from the surface The sides of the crevasse are abraded, and a vertical shaft is formed in the ice. The erosion may be continued into the bed of the glacier; and, the ice having left the district, the giants kettle so formed is seen as an empty shaft, or as a pipe filled with gravel, sand or boulders. Erosion is the carrying away or displacement of solids ( Sediment, Soil, rock and other particles usually by the agents of currents such as wind For the various smoking devices see Hookah or Bong. For other uses see Pipe. Sand is a naturally occurring Granular material composed of finely divided rock and Mineral particles In Geology, a boulder is a rock with grain size of usually no less than 256 mm (10 Inches diameter Such cavities and pipes afford valuable evidence as to the former extent of glaciers. Similar holes are met with in riverbeds at the foot of cascades, and under some other circumstances. The term pothole is also sometimes used synonymously with swallow-hole.
This article incorporates text from the Encyclopædia Britannica Eleventh Edition, a publication now in the public domain. The Encyclopædia Britannica Eleventh Edition (1910–1911 is a 29-volume reference work that marked the beginning of the Encyclopædia Britannica The public domain is a range of abstract materials &ndash commonly referred to as Intellectual property &ndash which are not owned or controlled by anyone