Destrukce kalcitových speleotém v jeskyních Moravského krasu

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Title in English	Destruction of calcite speleothem in the Moravian Karst caves
Authors	DURĎÁKOVÁ Marta FAIMON Jiří
Year of publication	2011
Type	Article in Periodical
Magazine / Source	Geologické výzkumy na Moravě a ve Slezsku
MU Faculty or unit	Faculty of Science
Citation
Field	Geochemistry
Keywords	anthropogenic impact; cave; condensation; corrosion; destruction; fissure; straw stalactite
Description	Speleothem extensive damage was observed in the Moravian Karst caves during the last 20-30 years. It covers corrosion and falling of straw stalactites especially. Both the processes were studied in the Amaterská Cave and the Punkevní Caves, the sites where the damage is most extensive. The results indicate that corrosion dominates in the Amaterská Cave whereas speleothem falling seems more extensive in the Punkevní Caves. Based on fissile cracks in calcite wall, the falling was interpreted as result of a mechanical damage. As the corrosion impact was found only on the outer site of stalactite wall, it was interpreted as consequence of calcite dissolution by condensed water (condensation corrosion). An anthropogenic impact is ambiguous.
Related projects:	Recent karst processes: speleothem destruction Interactions among the chemicals, environment and biological systems and their consequences on the global, regional and local scales (INCHEMBIOL)