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Time indications in the Rotliegend and the Permian ‘Pangaea Gap’

Time indications in the Rotliegend Group of Germany are integrated and presented in a new way (Menning et al. 2022, ZDDG 173: 3–139). (1) U-Pb CA-ID-TIMS radio-isotopic age determinations from the Thüringer Wald (Lützner et al. 2021, Int. J. Earth Sci.), (2) the recalculated Rb-Sr age for the Donnersberg-Formation of the Saar-Nahe Basin (Menning et al. 2022) utilizing the recently revised 87Rb decay constant (Villa et al. 2016, Geochim. Cosmochim. Acta), (3) the newly calculated mean age for the U-Pb SHRIMP data of Breitkreuz & Kennedy (1999, Tectonophysics) of 298.6 ± 1.9 Ma for the Central European Basin (CEB), which reduces the time span for the Altmark Subgroup volcanic succession from 302–290 Ma to ≈ 300.5–296.5 Ma, (4) the Re-Os age of 257.3 ± 1.1 Ma for the Kupferschiefer (base Zechstein Group), (5) the age of ≈ 265 Ma of the Illawarra Reversal of the Earth´ magnetic field, and (6) highly different palaeomagnetic properties of the sediments of the underlying Müritz Subgroup and the hanging Havel Subgroup are significant evidence for an extensive stratigraphic gap or a very gap-rich time span (≈ 295/293.5–266 Ma = Middle Rotliegend). In Central Europe, this gap forms part of the longest Phanerozoic time span without significant marine layers (≈ 311 Ma to ≈ 257.3 Ma = ≈ 54 Ma). The gap is most probably related to the amalgamation and the associated immense uplift of Pangaea in Central and Western Europe and thus termed the ‘Pangaea Gap’.


Manfred Menning1, Johannes Glodny1
1Helmholtz-Zentrum Potsdam, Deutsches GeoForschungsZentrum GFZ
GeoBerlin 2023