Pervasive near-surface stratal disruption in an accretionary prism setting: Kaczawa Complex, SW Poland
journal contributionposted on 19.04.2018, 10:23 by Joanna Kostylew, Jan A. Zalasiewicz, Ryszard Kryza
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.
The study was supported by the Polish National Research Committee KBN and the National Science Centre of Poland (JK and RK, grant number 3 P04D 045 25 and N N307 062036) and by the University of Wrocław, Poland (RK and JK, grant number 1017/S/ING/10-II).
CitationGeological Magazine, 2017, 154 (3), pp. 651-660 (10)
Author affiliation/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/School of Geography, Geology and the Environment
VersionAM (Accepted Manuscript)
Published inGeological Magazine
PublisherCambridge University Press (CUP)
Science & TechnologyPhysical SciencesGeosciences, MultidisciplinaryGeologysoft sediment deformationstratal disruptionVariscan accretionary prismKaczawa ComplexSudetesCENTRAL-EUROPEAN VARISCIDESSOFT-SEDIMENT DEFORMATIONSTRUCTURAL STYLESFACIES METAMORPHISMCONVERGENT MARGINSDETRITAL ZIRCONSSUBDUCTION ZONEEVOLUTIONMELANGEEVENTS