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(Article of periodic en Anglais - 2012)

Document title

Role of periglacial processes in epikarst morphogenesis : a case study from Chełm chalk quarry, Lublin Upland, eastern Poland

Authors(s) and Affiliation(s)

DOBROWOLSKI R. (1) ; BIEGANOWSKI A. (2) ; MROCZEK P. (1) ; RYŻAK M. (2) ;
(1) Fac. of Earth Sciences and Spatial Management, Maria Curie-Sklodowska Univ., Lublin, POLOGNE
(2) Inst. of Agrophysics, Polish Academy of Sciences, Lublin, POLOGNE

Abstract

Analysis of lithofacies, particle-size distribution and micromorphology of 3 pocket infills in the Chełm chalk quarry reveals a prominent clay cortex between the host chalk and the glaciogenic infill and suggests that periglacial processes have played a considerable role in the formation of the pockets and in the redistribution of their primary glaciogenic infill. A conceptual model for epikarst morphogenesis for the chalk karst of Lublin Upland is proposed, involving 3 stages. Stage I : In the absence of permafrost, precipitation water infiltrates unconsolidated glaciogenic deposits. Stage II : Periglacial transformation with underlying permafrost. Primary cryoturbation structures became protokarst forms, and then epikarst forms. Stage III : Degradation of the permafrost, with increased carbonate dissolution and development of a clay karst cortex

Source

Article of periodic

published at : Permafrost and periglacial processes / ISSN 1045-6740 / CODEN PEPPED

Editor : Wiley, Chichester - ROYAUME-UNI (1990)

Millesime : 2012, vol. 23, no4 [pp. 251-266]

Bibliographic references : 3 p.

Collation : 6 fig., 2 tabl.

Language

Anglais

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/ppp.1750

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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