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- Panhole abstract "A panhole is a depressed, erosional feature found on flat or gently sloping rock. Panholes are the result of long-term weathering and are generally seen on bedrock or very large blocks of rock. Similar terms are gnamma (Australia), opferkessel (German, roughly “sacrificial basin”), “armchair hollows”, weathering pans (or pits) and solution pans (or pits). Other German names include kamenitza and kamenica. In Spanish they are tinajita. In Portuguese and Galician are called pias.In Namaqualand these features are called !gauThese shallow solution basins, or closed depressions, tend to form on bare limestone or silicate rock. They are also found on granitic rock. They are generally characterized by flat bottoms and sometimes by overhanging sides. The initial form may be a closed hollow created by a patch of humus. Diameters are rarely greater than 15 centimetersIn the Sierra Nevada, California these features were termed weathering pits by François E. Matthes, where they are thought to indicate rock surfaces that are unglaciated or escaped more recent glaciations. In Sierra Nevada granitic rocks, these features have a characteristic shape such that they expand more rapidly in width than they grow in depth. One explanation for their conformation is because the most active environment for weathering is the zone of alternate wetting and drying along the margins of the pools that collect in the pits, the margins tend to deepen and enlarge until all points of the bottom are equally wet or dry at the same time, thus producing their characteristic shape. The Australian aboriginal term gnamma, in particular, implies a depression capable of holding water at times.A related concept is a \"swirlhole\": A hole in rock in a streambed eroded by eddying water, with or without sand or pebble abrasives. Swirlholes typically form at the bottoms of waterfalls.".
- Panhole thumbnail Lapiaz_de_Loulle_(Jura_-_France).JPG?width=300.
- Panhole wikiPageID "24888356".
- Panhole wikiPageLength "3321".
- Panhole wikiPageOutDegree "15".
- Panhole wikiPageRevisionID "652933926".
- Panhole wikiPageWikiLink Category:Geological_processes.
- Panhole wikiPageWikiLink Category:Geomorphology.
- Panhole wikiPageWikiLink Category:Structural_geology.
- Panhole wikiPageWikiLink Forbes_State_Forest.
- Panhole wikiPageWikiLink François_E._Matthes.
- Panhole wikiPageWikiLink Glacier_Point.
- Panhole wikiPageWikiLink Granite.
- Panhole wikiPageWikiLink Humus.
- Panhole wikiPageWikiLink Limestone.
- Panhole wikiPageWikiLink Namaqualand.
- Panhole wikiPageWikiLink Shenandoah_National_Park.
- Panhole wikiPageWikiLink Silicate.
- Panhole wikiPageWikiLink Waterfall.
- Panhole wikiPageWikiLink File:Lapiaz_de_Loulle_(Jura_-_France).JPG.
- Panhole wikiPageWikiLink File:Weathering_pits_-_granitic_rock_-_Glacier_Point,_Yosemite_National_Park,_California.jpg.
- Panhole wikiPageWikiLinkText "Panhole".
- Panhole wikiPageWikiLinkText "gnamma holes".
- Panhole wikiPageWikiLinkText "panhole".
- Panhole wikiPageUsesTemplate Template:Geology-stub.
- Panhole wikiPageUsesTemplate Template:Reflist.
- Panhole subject Category:Geological_processes.
- Panhole subject Category:Geomorphology.
- Panhole subject Category:Structural_geology.
- Panhole type Process.
- Panhole type Science.
- Panhole type Subfield.
- Panhole comment "A panhole is a depressed, erosional feature found on flat or gently sloping rock. Panholes are the result of long-term weathering and are generally seen on bedrock or very large blocks of rock. Similar terms are gnamma (Australia), opferkessel (German, roughly “sacrificial basin”), “armchair hollows”, weathering pans (or pits) and solution pans (or pits). Other German names include kamenitza and kamenica. In Spanish they are tinajita.".
- Panhole label "Panhole".
- Panhole sameAs Q6452582.
- Panhole sameAs Laco_(erosión_alviolar).
- Panhole sameAs Skalní_mísa.
- Panhole sameAs Pilancón.
- Panhole sameAs 나마_(지형).
- Panhole sameAs m.09gcf37.
- Panhole sameAs Q6452582.
- Panhole wasDerivedFrom Panhole?oldid=652933926.
- Panhole depiction Lapiaz_de_Loulle_(Jura_-_France).JPG.
- Panhole isPrimaryTopicOf Panhole.