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https://doi.org/10.5194/se-2020-183
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/se-2020-183
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

  11 Nov 2020

11 Nov 2020

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This preprint is currently under review for the journal SE.

Late Cretaceous to Paleogene exhumation in Central Europe – localized inversion vs. large-scale domal uplift

Hilmar von Eynatten1, Jonas Kley2, István Dunkl1, Veit-Enno Hoffmann1, and Annemarie Simon1 Hilmar von Eynatten et al.
  • 1University of Göttingen, Geoscience Center, Department of Sedimentology and Environmental Geology, Goldschmidtstrasse 3, 37077 Göttingen, Germany
  • 2University of Göttingen, Geoscience Center, Department of Structural Geology and Geodynamics, Goldschmidtstrasse 3, 37077 Göttingen, Germany

Abstract. Large parts of Central Europe have experienced exhumation in Late Cretaceous to Paleogene time. Previous studies mainly focused on thrusted basement uplifts to unravel magnitude, processes and timing of exhumation. This study provides, for the first time, a comprehensive thermochronological dataset from mostly Permo-Triassic strata exposed adjacent to and between the basement uplifts in central Germany, comprising an area of at least some 250–300 km across. Results of apatite fission track and (U-Th)/He analyses on > 100 new samples reveal that (i) km-scale exhumation affected the entire region, (ii) thrusting of basement blocks like the Harz Mountains and the Thuringian Forest focused in the Late Cretaceous (about 90–70 Ma) while superimposed domal uplift of central Germany is slightly younger (about 75–55 Ma), and (iii) large parts of the domal uplift experienced removal of 3 to 4 km of Mesozoic strata. Using spatial extent, magnitude and timing as constraints suggests that thrusting and crustal thickening alone can account for no more than half of the domal uplift. Most likely, dynamic topography caused by upwelling asthenosphere has contributed significantly to the observed pattern of exhumation in central Germany.

Hilmar von Eynatten et al.

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