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Enviroscan Ukrainian Institute of Speleology and Karstology


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Community news

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 mining of ground water is the permanent depletion of ground-water reserves [16].?

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


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Mine Caves / Grotte di Miniera Memorie Istituto Italiano di Speleologia, 2013, p. 71-72

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MINE CAVES ON THE SOUTH-EASTERN FLANK OF THE HARZ MOUNTAINS (SAXONY-ANHALT, GERMANY) LE GROTTE DI MINIERA DEL VERSANTE SUD-ORIENTALE DELLE MONTAGNE DELL’HARZ (SASSONIA-ANHALT, GERMANIA)

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Abstract:

The historical copper shale mine excavations on the south-eastern flank of Harz Mountains have cut into numerous large caves in gypsum and anhydrite. These caves are known as “Schlotten” (pl., sg. Schlotte). The word is derived from the Early New High German meaning internal hollow formations allowing the drainage of water and already finds mention in XVIth century literature. However, these quite spectacular gypsum caves have never aroused the interest of the wider public. Discovered through mining, they have always been only accessible via pit shafts and galleries and invariably considered to be part of the mine. But in a scientific sense they are deep phreatic and hypogene caves in a parent rock of anhydrite or gypsum, in their natural state filled with water and without an entrance. They are unique geological outcrops in Zechstein (upper Permian), large karst caves of rare character and particular beauty as well as cultural witnesses to historical mining. The miners used the “Schlotten” for a long period of time to drain water from the mines (until the XVIIIth century) and for economical reasons also to store unwanted spoil (until the XIXth century). As the mine workings reached deeper levels, sub- sidence and flooding became more common and the intensity of the karst dissolution process increased. Problems of catastrophic proportions due to mine flooding were encountered in 1892 near Eisleben and in 1988 near Sangerhausen. The hydrological problems that confronted the copper shale mine excavations in the south-eastern Harz region are of geogenic origin. The exploitable seams, which on average slope between 3º and 8º, are covered with a between 4 and 7 metre thick layer of limestone (Zechstein) with the characteristics of a karst aquifer. Above this a 60 m thick layer of anhydrite or gypsum is found, in which the “Schlotten” are formed, notably on geological faults. The relevance of the “Schlotten” as a natural phenomenon was first appreciated in depth by Johann Carl Freiesleben (1774-1846). He described them scientifically in 1809 and campaigned emphatically for their preservation. With regard to this, the “Wimmelburger Schlotten” near Eisleben were surveyed and geologically mapped by Anton Erdmann (1782-1848). The plan and side elevation of the cave survey were reproduced in copperplate and are considered to be the oldest published depiction of a gypsum cave in Germany. From the mid 70s the “Schlotten” became subject of speleological research for a short period of time. The abandoned projects have only recently been re-established. Two of the “Schlotten” are accessible via the Mining Museum Wettelrode: the “Segen-Gottes-Schlotte” and the “Elisabethschaechter Schlotte” near Sangerhausen. The “Wimmelburger Schlotten” near Eisleben are the largest gypsum caves in Germany and to a certain extent accessible for research.

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Keywords: saxony-anhal, germany, mine caves

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