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Pervasive near-surface stratal disruption in an accretionary prism setting: Kaczawa Complex, SW Poland

Published online by Cambridge University Press:  25 May 2016

JOANNA KOSTYLEW ,
JAN A. ZALASIEWICZ  and
RYSZARD KRYZA
JOANNA KOSTYLEW*
Affiliation:
Institute of Geological Sciences, University of Wrocław, Cybulskiego 30, 50–205 Wrocław, Poland
JAN A. ZALASIEWICZ
Affiliation:
Department of Geology, University of Leicester, University Road, Leicester, LE1 7RH, UK
RYSZARD KRYZA
Affiliation:
Institute of Geological Sciences, University of Wrocław, Cybulskiego 30, 50–205 Wrocław, Poland
*
†Author for correspondence: joanna.kostylew@uwr.edu.pl
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Abstract

The tectonized and metamorphosed mudrocks within the Variscan accretionary prism of the Kaczawa Mountains in SW Poland comprise sedimentary mélanges together with more coherent stratigraphic units; some represent large olistoliths deposited in a submarine trench. We infer a trend of progressive near-surface stratal disruption in mud-dominated deposits due to dewatering that forms a continuum with subduction-related tectonic structures imposed on unconsolidated sediment during deeper burial. The assemblage of characters suggests that an accretionary prism environment can influence, and leave characteristic traces of, the total burial history of a trench succession.

Keywords

soft sediment deformationstratal disruptionVariscan accretionary prismKaczawa ComplexSudetes
Type
Original Articles
Information
Geological Magazine , Volume 154 , Issue 3 , May 2017 , pp. 651 - 660
Copyright
Copyright © Cambridge University Press 2016 

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