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- Paleocollapse abstract "Paleocollapse is a rock structure resembling the karst landform, but is formed essentially by the dissolution of underlying sedimentary rock. It has also been called paleo-karst collapse. This has the effect of collapsing the formerly intact rock above, forming extensive fractures, debris pipes, and open caverns. Normally, the process was started and completed in the geologic past.The mechanism of its formation is relatively simple. As in the illustration, a deeper layer of salt (or other evaporite) is dissolved, through some process. The support for the upper rock vanishes, and starts the collapse process. This is much like the subsidence associated with old coal mines. Eventually, the caving process reaches the surface, and can be associated with debris pipes, rock fractures, and open caverns. At some later date, undisturbed sediments, or glacial till may fill the collapse zone.Paleocollapse geology can be remarkably stable (unlike karst), but poses some serious challenges to engineering or environmental geology. Primarily, the collapse zone is extremely permeable. This can provide a conduit for groundwater, or contaminant transport. As well, these zones may only be marginally stable, in that they can be reactivated by human activity, or events such as earthquakes. In China, underground mines have become suddenly flooded, due to paleocollapse features.In order to fully characterize the hazard, investigations may be undertaken, using dye tracers, or exploration geophysics. Of particular importance is understanding the true stability of the region. The paleocollapse process may continue at some future date, due to deep groundwater flow changes. Or perhaps, the reason that a certain evaporite zone has dissolved, is because of underlying faults in the bedrock.".
- Paleocollapse thumbnail Paleocol.png?width=300.
- Paleocollapse wikiPageID "5651612".
- Paleocollapse wikiPageLength "2649".
- Paleocollapse wikiPageOutDegree "16".
- Paleocollapse wikiPageRevisionID "525861585".
- Paleocollapse wikiPageWikiLink Category:Landforms.
- Paleocollapse wikiPageWikiLink Category:Stratigraphy.
- Paleocollapse wikiPageWikiLink Cave.
- Paleocollapse wikiPageWikiLink Caverns.
- Paleocollapse wikiPageWikiLink Coal_mines.
- Paleocollapse wikiPageWikiLink Coal_mining.
- Paleocollapse wikiPageWikiLink Earthquake.
- Paleocollapse wikiPageWikiLink Earthquakes.
- Paleocollapse wikiPageWikiLink Engineering.
- Paleocollapse wikiPageWikiLink Environmental_geology.
- Paleocollapse wikiPageWikiLink Evaporite.
- Paleocollapse wikiPageWikiLink Exploration_geophysics.
- Paleocollapse wikiPageWikiLink File:Paleocol.png.
- Paleocollapse wikiPageWikiLink Glacial_till.
- Paleocollapse wikiPageWikiLink Karst.
- Paleocollapse wikiPageWikiLink Permeability_(earth_sciences).
- Paleocollapse wikiPageWikiLink Permeability_(fluid).
- Paleocollapse wikiPageWikiLink Salt.
- Paleocollapse wikiPageWikiLink Sediment.
- Paleocollapse wikiPageWikiLink Sedimentary_rock.
- Paleocollapse wikiPageWikiLink Sediments.
- Paleocollapse wikiPageWikiLink Till.
- Paleocollapse wikiPageWikiLinkText "paleocollapse".
- Paleocollapse hasPhotoCollection Paleocollapse.
- Paleocollapse wikiPageUsesTemplate Template:Reflist.
- Paleocollapse subject Category:Landforms.
- Paleocollapse subject Category:Stratigraphy.
- Paleocollapse hypernym Structure.
- Paleocollapse type Building.
- Paleocollapse type Landform.
- Paleocollapse comment "Paleocollapse is a rock structure resembling the karst landform, but is formed essentially by the dissolution of underlying sedimentary rock. It has also been called paleo-karst collapse. This has the effect of collapsing the formerly intact rock above, forming extensive fractures, debris pipes, and open caverns. Normally, the process was started and completed in the geologic past.The mechanism of its formation is relatively simple.".
- Paleocollapse label "Paleocollapse".
- Paleocollapse sameAs m.0dy9h4.
- Paleocollapse sameAs Q7127145.
- Paleocollapse sameAs Q7127145.
- Paleocollapse wasDerivedFrom Paleocollapse?oldid=525861585.
- Paleocollapse depiction Paleocol.png.
- Paleocollapse isPrimaryTopicOf Paleocollapse.