DBPapers
DOI: 10.5593/SGEM2014/B12/S2.071

KARST SINKS OF THE PERM REGION (THE WESTERN URAL)

V. N. Kataev , I.G. Ermolovich
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-08-7 / ISSN 1314-2704, June 19-25, 2014,Book 1, Vol. 2, 559-566 pp

ABSTRACT
Perm region is not only well-known as one of the regions of the classical lithological types of karst (carbonate, sulphate and chloride) development, but also as territory of displays of cement dissolution (in passing with siffosion) in terrigenous rocks of the Permian system. It is territory where the karst deposits quite often considered as independent karst thickness are widely distributed, e.g. karst breccia and karst-landslide formation. On the karsted territories (up to 25 % of the area of region) the basic karst deformations of a surface are widely distributed. Karst deformations are represented by karst sink-holes, sinks, local and the common subsidence. The mechanism of their formation and its kinds are distinguished by complexity and a variety. The analysis has shown, that 70% of catastrophic situations are connected with the sulphate karst, 25- 30% with carbonate, individual, but the most scale on destructions with chloride. In sulphate and chloride karst the catastrophic phenomena carry, as a rule, sinking character. In carbonate karst sink-holes are rare, arise subsidences are more often. In any case, distribution of catastrophic karst phenomena occurs according to geologicalstructural features of the massifs, but intensity and speed of process in each case is caused by type and intensity of technogenetic changes of the natural environment. It is possible, that at absence of technogenetic influences karst sink-holes would be shown in scale of geological time.

Keywords: region, karst sink-hole, factors, karst hazard