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ARCHITECTURE AND STRUCTURAL EVOLUTION OF THE QUATERNARY JASMUND GLACITECTONIC COMPLEX (RUEGEN ISLAND, NE GERMANY)
A wide spectrum of methods has been compiled to unravel the structural evolution of the Jasmund Glacitectonic Complex. DEM analyses suggest a division into two structural sub-complexes – a northern part with morphological ridges striking NW–SE and a southern part with SW–NE trending ridges. Geological cross sections from the eastern coast (southern sub-complex) were constructed and restored using the software Move™ and the complementary module 2D Kinematic Modelling™.
The final model shows a small-scale fold and thrust belt. It includes three different orders of architectural surfaces (see Pedersen 2014): erosional surfaces and detachment faults (1st order), thrust faults (2nd order), and hanging-wall anticlines as well as footwall synclines (3rd order). Thrust faults inclined towards south indicate a local glacier push from the S/SE.
The glacitectonic structures have a surface expression in form of sub-parallel ridges and elongated valleys in between. Geomorphological mapping and detailed landform analyses together with structural investigations provide an insight into the chronology of sub-complex formation. The northern part of the glacitectonic complex is suggested to have been formed before the southern one, considering the partly truncated northerly ridges and their superimposition by the southern sub-complex.
Although there is a high number of scientific publications on the glacitectonic evolution of Jasmund, the presented models often lack a consistent theory for the development integrating all parts of the 100 km2 large complex. Therefore, a combination of all the new results is our opportunity to come up with a more self-consistent genetic model for the entire Jasmund Glacitectonic Complex.
Reference: Pedersen, S.A.S. (2014): Architecture of Glaciotectonic Complexes. – Geosciences, 4: 269-296.