A facies geological test of stable isotope interpretation of the Upper Permian depositional environment in West Spitsbergen |
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| Authors: | Krzysztof Malkowski Michal Gruszczy&#;ski Antoni Hoffman |
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| Institution: | Institute of Paleobiology, Polish Academy of Sciences, Al. Zwirki i Wigury 93, PL-02–089 Warszawa, Poland |
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| Abstract: | Lithofacies analysis of two transgressive sequences within the Kapp Starostin Formation (Upper Permian, West Spitsbergen), indicates considerable differences in seawater chemistry between their depositional environments. The onshore part of the sequence represented in the Vøringen and Svenskeegga Members is largely calcareous, with allochthonous and corroded siliceous materials. In contrast, in the equivalent sequence within the Hovtinden Member, silica is ubiquitous whereas carbonate materials include mainly corroded bioclasts. These differences are consistent with predictions of the oceanographic model of ‘overfed’ and ‘hungry’ oceans proposed previously on the basis of carbon and oxygen stable isotope analysis. |
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