Sandstone caves on Venezuelan tepuis: Return to pseudokarst?

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62690094%3A18460%2F11%3A50003106" target="_blank" >RIV/62690094:18460/11:50003106 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.geomorph.2011.05.023" target="_blank" >http://dx.doi.org/10.1016/j.geomorph.2011.05.023</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.geomorph.2011.05.023" target="_blank" >10.1016/j.geomorph.2011.05.023</a>

Result language
angličtina
Original language name
Sandstone caves on Venezuelan tepuis: Return to pseudokarst?
Original language description
Venezuelan table mountains (tepuis) host the largest arenite caves in the world. The most frequently used explanation of their origin so far was the ?arenization? theory, involving dissolution of quartz cement around the sand grains and subsequent removing of the released grains by water. New research in the two largest arenite cave systems - Churi-Tepui System in Chimanta Massif and Ojos de Cristal System in Roraima Tepui showed that quartz dissolution plays only a minor role in their speleogenesis. Speleogenetic processes are mostly concentrated on the beds of unlithified sands which escaped from diagenesis by being sealed by the surrounding perfectly lithified quartzites. The main prerequisite to rank caves among karst phenomena is dissolution. As the dissolution of silicate minerals other than quartz appears to play not only a volumetrically important role but even a trigger role, these arenitic caves may be ranked as karst.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DB - Geology and mineralogy
OECD FORD branch
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Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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