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Geological Society, London, Special Publications; 1987; v. 29; p. 287-298;
DOI: 10.1144/GSL.SP.1987.029.01.22
© 1987 Geological Society of London

Part III Descriptive

Genesis and diagnostic value of large-scale gravity-induced penecontemporaneous deformation horizons in Quaternary sediments of the Kleszczów Graben (central Poland)

Krzysztof Brodzikowski, Andrzej Haluszczak & Dariusz Krzyszkowski

Department of Applied Geology, Institute of Geological Sciences, University of Wroclaw, Uniwersytecka 19/20, 50–145 Wroclaw, Poland

Antonius J. Van Loon

, Julianaweg 5, 6862 ZN Oosterbeek, The Netherlands

Gravity-induced soft-sediment deformations are quite common throughout the Tertiary and Quaternary infilling of the Kleszczów Graben. Only a limited number of horizons, however, are characterized by the abundant occurrence of large-scale load casts, ball-and-pillow structures, convolute lamination and related structures. It appears that the structures started to develop at a metadepositional stage and that the process was favoured by unstable density gradients. The further development was rather complicated, but endogenic activity in the graben must have played a role, though mainly as a trigger mechanism.