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Speleology in Kazakhstan

Shakalov on 04 Jul, 2018
Hello everyone!   I pleased to invite you to the official site of Central Asian Karstic-Speleological commission ("Kaspeko")   There, we regularly publish reports about our expeditions, articles and reports on speleotopics, lecture course for instructors, photos etc. ...

New publications on hypogene speleogenesis

Klimchouk on 26 Mar, 2012
Dear Colleagues, This is to draw your attention to several recent publications added to KarstBase, relevant to hypogenic karst/speleogenesis: Corrosion of limestone tablets in sulfidic ground-water: measurements and speleogenetic implications Galdenzi,

The deepest terrestrial animal

Klimchouk on 23 Feb, 2012
A recent publication of Spanish researchers describes the biology of Krubera Cave, including the deepest terrestrial animal ever found: Jordana, Rafael; Baquero, Enrique; Reboleira, Sofía and Sendra, Alberto. ...

Caves - landscapes without light

akop on 05 Feb, 2012
Exhibition dedicated to caves is taking place in the Vienna Natural History Museum   The exhibition at the Natural History Museum presents the surprising variety of caves and cave formations such as stalactites and various crystals. ...

Did you know?

That pinnacles is these are a particularly mature form of karren. the side walls are grikes with rinnenkarren cutting across one another to form sharp edges and peaks that can reach several meters in height. generally, pinnacles need a long period time to form. they are common in the tropics and can attain great sizes [3]. often, they are covered. see also debris karren.?

Checkout all 2699 terms in the KarstBase Glossary of Karst and Cave Terms

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KarstBase a bibliography database in karst and cave science.

Featured articles from Cave & Karst Science Journals
Chemistry and Karst, White, William B.
See all featured articles
Featured articles from other Geoscience Journals
Karst environment, Culver D.C.
Mushroom Speleothems: Stromatolites That Formed in the Absence of Phototrophs, Bontognali, Tomaso R.R.; D’Angeli Ilenia M.; Tisato, Nicola; Vasconcelos, Crisogono; Bernasconi, Stefano M.; Gonzales, Esteban R. G.; De Waele, Jo
Calculating flux to predict future cave radon concentrations, Rowberry, Matt; Marti, Xavi; Frontera, Carlos; Van De Wiel, Marco; Briestensky, Milos
Microbial mediation of complex subterranean mineral structures, Tirato, Nicola; Torriano, Stefano F.F;, Monteux, Sylvain; Sauro, Francesco; De Waele, Jo; Lavagna, Maria Luisa; D’Angeli, Ilenia Maria; Chailloux, Daniel; Renda, Michel; Eglinton, Timothy I.; Bontognali, Tomaso Renzo Rezio
Evidence of a plate-wide tectonic pressure pulse provided by extensometric monitoring in the Balkan Mountains (Bulgaria), Briestensky, Milos; Rowberry, Matt; Stemberk, Josef; Stefanov, Petar; Vozar, Jozef; Sebela, Stanka; Petro, Lubomir; Bella, Pavel; Gaal, Ludovit; Ormukov, Cholponbek;
See all featured articles from other geoscience journals

Journal of Cave and Karst Studies, 2003, Vol 65, Issue 1, p. 43-52
Gypsum wedging and cavern breakdown: Studies in the Mammoth Cave System Kentucky
Abstract:
Many segments of dry passages in the Mammoth Cave System contain an unusual breakdown lying unconformably over underlying stream sediments. The association of many of these breakdown areas with sulfate minerals (primarily gypsum) suggests that crystal wedging and replacement of limestone by gypsum are important factors in this type of cavern collapse. The following features are characteristic of mineral-activated breakdown: 1) Walls and ceilings fractured in irregular patterns often with visible veins of gypsum following the fractures; 2) Breakdown consisting of characteristic thin, irregular splinters and shards of bedrock; 3) Curved plates of bedrock ranging in size from a few centimeters to more than a meter hanging from the ceiling at steep angles and cemented only by a thin layer of gypsum; 4) Collapses that take the form of symmetrical mounds with coarse irregular blocks at the base grading upward into a rock flour at the top. Thin sections of the curved plates clearly show gypsum replacing limestone. Possible sources for the sulfate-bearing solutions are from the weathering of pyrite either at the top of the overlying Big Clifty Sandstone or in the limestone wall rock surrounding the cave passage. Reactions of the percolating solutions produce sulfate minerals in the wallrock adjacent to cave passages. Gypsum and other sulfate minerals created in the wall rock are less dense than calcite and exert sufficient pressure to spall off bits of the rock, some of which remain cemented in place by the gypsum.