Cryogenic carbonates and cryogenic speleothem damage in the Za Hájovnou Cave (Javoříčko Karst, Czech Republic)

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Publication Date

12-30-2018

Publication Title

Geological Quarterly

Volume Number

62

Issue Number

4

Abstract

A new locality of coarse-grained cryogenic cave carbonates has been found in the ZaHájovnou Cave in Javoøíèko Karst in Central Moravia, Czech Republic. Crystals and crystal aggregates, usually up to 15 mm in size, form typical loose accumula-tions on the surface of large fallen lime stone blocks and clays cover ing the bottoms of several cave chambers distant from the cave entrance. The cryogenic origin of the carbonates is supported by their mode of occurrence, specific crystal and aggregate morphology, and C and O stable isotope data. U-series dating of one sample of cryogenic carbon te (age 29.5 ±0.1ka) indicated that a period of karst water freezing occurred in marine isotope stage (MIS) 3, within the Weichselian. The cave also hosts numerous examples of speleothem damage. As shown in this paper, some of these are clearly connected with freez ing conditions and cave ice action.

Keywords

Caves, Speleothems, Carbonate minerals, Isotopes, Glacial epoch

Document Type

Article

Digital Object Identifier (DOI)

https://doi.org/10.7306/gq.1441

Language

English

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