Coastal cliff at Lenzer Bach on Jasmund Peninsula, Rügen Island (Pleistocene Stripe 4): reconstructed history of glacitectonic deformation based on fold geometry and microstructural mapping

Abstract

Abstract. A thrust-bound footwall syncline located within the proximal part of the southern Jasmund Glacitectonic Complex is investigated, exploring the spatio-temporal relationship between glacitectonic macro- and microstructures. Orientation and geometry of macroscale folds and thrust faults reveal a two-phased deformation history recorded by the sedimentary sequence. The deformation is a result of glacitectonic imbrication and subsequent ice flow across Jasmund Peninsula during the late Weichselian. Clast microfabrics preserved within the folded glacial diamicts reveal that till-internal deformation is mainly related to subglacial shearing within the glacier bed, which predates large-scale imbrication and folding.

New insights into the structural development and shortening of the southern Jasmund Glacitectonic Complex (Rügen, Germany) based on balanced cross sections

“…3). Based on field observations, modelling, and detailed macro-and microtectonic descriptions, a thrust steeply dipping towards the WSW (245/85) is suggested for the WU3/WU1-boundary (Mehlhorn et al 2019). Down towards the décollement zone at 105 m b. s. l. it becomes less steeply inclined in a listric manner (245/46, 245/25) (Tab.…”

The Quaternary sequence of Mecklenburg-Western Pomerania: areas of specific interest and ongoing investigations

“…Steinich, 1992;Panzig, 1995;Ludwig, 2006;Müller and Obst, 2006;Kenzler et al, 2017;Kenzler and Hüneke, 2019). The microfabrics within the tills laid down by the SIS have been studied by means of two-and three-6 A. Börner et al: The Quaternary sequence of Mecklenburg-Western Pomerania dimensional analyses based on the microstructural mapping, which enables the identification and interpretation of the successive generations of fabrics in terms of a progressive, polyphase deformation history (Brumme, 2015;Brumme et al, 2019;Gehrmann et al, 2017Gehrmann et al, , 2019Mehlhorn et al, 2019). The orientation of these microfabrics can be directly related to changes in the regional ice-flow direction across the peninsula of Jasmund.…”