Groundwater sapping - Citizendia

Scientists believe that groundwater sapping created these gullies in Noachis Terra on Mars. Noachis Terra (lit "Land of Noah " is an extensive southern Landmass ( terra) of the Planet Mars. NASA image.

The two canyons at center-left in this photo from Canyonlands National Park in Utah have the theater-shaped heads typical of valley features shaped by groundwater sapping. Canyonlands National Park is located in the American state of Utah, near city of Moab and preserves a colorful landscape eroded into countless canyons The State of Utah (ˈjuːtɔː or) is a western state of the United States. The Green River is at right. The Green River, located in the western United States, is the chief tributary of the Colorado River.

Groundwater sapping is the geomorphic process in which groundwater exits a bank or hillslope laterally as seeps and springs and erodes soil from the slope. Geomorphology (from Greek: γη ge, "earth" μορφή morfé, "form" and λόγος Logos, "knowledge" Groundwater is Water located beneath the Ground surface in Soil pore spaces and in the Fractures of lithologic formations A spring is a point where Groundwater flows out of the ground and is thus where the Aquifer surface meets the ground surface Erosion is the carrying away or displacement of solids ( Sediment, Soil, rock and other particles usually by the agents of currents such as wind Soil, often typeset as SOiL, is a four piece rock band from Chicago Illinois United States founded by Shaun Glass Tom Schofield Tim King and Adam Zadel This often causes the slope to be undermined and undergo mass wasting, hence the word sapping. Mass wasting, also known as slope movement, is the geomorphic process by which Soil, Regolith, and rock move downslope under This is one of the processes involved in the formation of gullies, such as lavaka. This article refers to the landform For other uses see Gully (disambiguation. Lavaka, the Malagasy word for "hole" is a type of erosional feature common in Madagascar. Erosion by sapping tends to produce steep-sided U-shaped valleys of fairly uniform width with box-like, "theater-shaped" headwalls. In Geology, a valley (also called a vale, dale, glen or strath and near or in Appalachia, a draw) is In Physical geography, the headwall of a glacial cirque is its highest cliff This contrasts with the more common branching or dentritic pattern of V-shaped valleys produced by overland flows that become wider with distance from their source. Groundwater sapping has been suggested as the cause for erosion of the valley and channel networks on Mars.

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