UIS Commission on Karst Hydrogeology and Speleogenesis
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Klimchouk A.B., Tymokhina E.I., Amelichev G.N., Dublyansky Y.V., SpöTl C.
The hypogene karst of the crimean piedmont and its geomorphological role (in russian)
The hypogene karst of the Crimean Piedmont and its geomorphological role
The book offers a fundamental new interpretation of the origin of karst in the Crimean Piedmont and explains the role karstification played in the geomorphogenesis of the region. The hypogene origin of karst cavities, their leading role in dismembering the Crimean Piedmont’s homocline and the formation of the characteristic cuesta and rock-remnant relief of the area is demonstrated on the basis of a systematic and comprehensive study, which included modern isotopic and geochemical methods.
The hypogene karst in the area developed in conditions of the confined to semi-confined groundwater flow systems, via interaction between the ascending flow of the deep-seated fracture-karst (conduit) water and the strata-bound, predominantly porous aquifers of the layered formations in the homoclinal northern mega-slope of the Crimean Mountains. The major pre-requisites for hypogene karst development is a position of the area at the flank of the Prichernomorsky artesian basin, and in a geodynamically active suture zone, which separates the fold-thrust structure of the Crimea Mountains and the Scythian plate. Opening of the stratified structure of the Piedmont follows the near-vertical cross-formational fracture-karst channels, resulting in the development of the pronounced cuesta relief with steep cliffs, which feature massive exposure of channels with karst-affected morphology.
Hypogene karstification results in characteristic morphologies, including caves, cliff niches and open chambers, variously sculptured and honeycomb-cellular surfaces of limestone cliffs, wide and shallow couloirs near the rims of cuestas, and rock remnants-“sphinxes”. The carbonate bedrock in the walls of the hypogene cavities revealed isotopic alteration (both O and C) caused by the action of hypogene fluids. The time of formation of cuestas in the Inner Range of the Crimean Mountains, determined on the basis of the U-Th disequilibrium dating of speleothems, turned out to be younger than thought previously. The active development of hypogene karst in the geologically recent past was the main factor responsible for today’s geomorphologic peculiarity of the Crimean Piedmont.
The book will be of interest for karstologists, hydrogeologists, geomorphologists, geologists, and environmental scientists studying karst regions, ore geology and carbonate reservoirs of hydrocarbons. It will also be useful for students of the respective disciplines, and for all those interested in the nature of the Crimean Piedmont.
karst, karst geomorphology, speleogenesis, hypogene karst, carbonate reservoir, Crimean Piedmont
Klimchouk A.B., Tymokhina E.I., Amelichev G.N., Dublyansky Y.V., SpöTl C., 2013, The hypogene karst of the crimean piedmont and its geomorphological role (in russian) , 1 - 204 , PDF