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Depression (geology)
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Depression (geology)
please note:
- the content below is remote from Wikipedia
- it has been imported raw for GetWiki
{{Short description|Landform sunken or depressed below the surrounding area}}File:Aepyceros melampus petersi female 8014.jpg|thumb|A watering holewatering holeFile:Îίμνη ΣÏÏ
μÏαλίαÏ.jpg|thumb|Karst closed depression with permanent lake Stymfalia, Peloponnese, Greece. Seasonal abundant precipitation drained by 3 (:en:Ponor|sinkholes) ]]In geology, a depression is a landform sunken or depressed below the surrounding area. Depressions form by various mechanisms.- the content below is remote from Wikipedia
- it has been imported raw for GetWiki
Types
Erosion-related:- Blowout: a depression created by wind erosion typically in either a partially vegetated sand dune ecosystem or dry soils (such as a post-glacial loess environment).
- Glacial valley: a depression carved by erosion by a glacier.
- River valley: a depression carved by fluvial erosion by a river.
- Area of subsidence caused by the collapse of an underlying structure, such as sinkholes in karst terrain.
- Sink: an endorheic depression generally containing a (wikt:persistent|persistent) or intermittent (seasonal) lake, a salt flat (playa) or dry lake, or an ephemeral lake.
- Panhole: a shallow depression or basin eroded into flat or gently sloping, cohesive rock.Twidale, C.R., and Bourne, J.A., 2018. Rock basins (gnammas) revisited. Géomorphologie: Relief, Processus, Environnement, Vol. 24, No. 2. January 2018. Retrieved 9 June 2020. {{doi|10.4000/geomorphologie.11880}}
- Sinkhole: a depression formed as a result of the collapse of rocks lying above a hollow. This is common in karst regions.
- Kettle: a shallow, sediment-filled body of water formed by melting glacial remnants in terminal moraines.WEB,weblink Dictionary of Geologic Terms â K, 2017-09-09, US Geochemical,
- Thermokarst hollow: caused by volume loss of the ground as the result of permafrost thawing.
- Impact crater: a depression created by an impact, such as a meteorite crater.
- Sedimentary basin: in sedimentology, an area thickly filled with sedimentWEB,weblink Dictionary of Geologic Terms â B, 2017-09-09, US Geochemical, in which the weight of the sediment further depresses the floor of the basin.
- Structural basin: a syncline-like depression; a region of tectonic downwarping as a result of isostasy (the Hawaiian Trough is an example) or subduction (such as the Chilean Central Valley).
- Graben or rift valley: fallen and typically linear depressions or basins created by rifting in a region under tensional tectonic forces.
- Pull-apart basin caused by offset in a strike-slip or transform fault (example: the Dead Sea area).
- Oceanic trench: a deep linear depression on the ocean floor. Oceanic trenches are caused by subduction (when one tectonic plate is pushed underneath another) of oceanic crust beneath either the oceanic crust or continental crust.
- A basin formed by an ice sheet: an area depressed by the weight of the ice sheet resulting in post-glacial rebound after the ice melts (the area adjacent to the ice sheet may be pulled down to create a peripheral depression.)WEB
,weblink
, Glossary of Important Terms in Glacial Geology â Peripheral Depression
, 2006-08-25
, 1999
, Montana State University
, dead
,weblink" title="web.archive.org/web/20060829001754weblink">weblink
, 2006-08-29
, Cites American Geological Institute's Glossary of Geology (3rd edition, revised in 1987).Volcanism-related: , Glossary of Important Terms in Glacial Geology â Peripheral Depression
, 2006-08-25
, 1999
, Montana State University
, dead
,weblink" title="web.archive.org/web/20060829001754weblink">weblink
, 2006-08-29
- Caldera: a volcanic depression resulting from collapse following a volcanic eruption.WEB,weblink Dictionary of Geologic Terms â C, 2017-09-09, US Geochemical,
- Pit crater: a volcanic depression smaller than a caldera formed by a sinking, or caving in, of the ground surface lying over a void.
- Maar: a depression resulting from phreatomagmatic eruption or diatreme explosion.
List of depressions
- AralâCaspian Depression
- Baetic Depression
- Bodélé Depression
- Caspian Depression
- Danakil Depression
- Eider-Treene Depression
- Georgia Depression
- Giurgeu-BraÈov Depression
- Godzareh Depression
- Huancabamba Depression
- Kara Depression
- Karashor Depression
- KumaâManych Depression
- Kuznetsk Depression
- Mari Depression
- Mourdi Depression
- Qattara Depression
- Regen Depression
- Ronda Depression
- Táchira Depression
- Tunkin Depression
- Turan Depression
- Turpan Depression
- Tuva Depression
- Upemba Depression
- Weser Depression
- Wittlich Depression
- Wümme Depression
See also
References
{{Reflist}}{{Earth's landforms}}{{Authority control}}- content above as imported from Wikipedia
- "Depression (geology)" does not exist on GetWiki (yet)
- time: 7:36am EDT - Sat, May 18 2024
- "Depression (geology)" does not exist on GetWiki (yet)
- time: 7:36am EDT - Sat, May 18 2024
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