Zusammenfassung
Während der Antarktisexpeditionen ANT I–IV mit FS POLARSTERN wurde eine gezielte Beprobung ungestörter Bereiche des Kontinentalhanges der östlichen Weddell See durchgeführt. Sedimentkerne von 12 Stationen auf zwei Profilen vor Kapp Norvegia und der Atka Bucht wurden stratigraphisch und sedimentologisch bearbeitet. Die Kerne durchteufen pleistozäne Sedimente mit Altern bis zu 1 Mio. Jahre. Die sedimentologischen Parameter erlauben eine Gliederung der Kontinentalhangsedimente in mehrere Faziestypen, die unterschiedlichen Ablagerungsräumen zugeordnet werden können. Die Faziesabfolge läßt sich nach der stratigraphischen Einstufung mit den pleistozänen Klimazyklen korrelieren, so daß die spezifischen Sedimentationsverhältnisse im Untersuchungsgebiet während der entsprechenden Klimaepochen rekonstruiert werden können.
Summary
During the Antarctic expeditions ANT I–IV with FS POLARSTERN a programm of sampling was carried out at specific locations in order to get samples from undisturbed parts of the continental slope in the eastern part of the Weddell Sea. Sediment cores from 12 locations along two profiles off kapp Norvegia and off Atka Bay were sedimentologically and stratigraphically analysed. The sediments are up to 1 mio. years old. The sedimentologic parameters allow a classification of different facies of the slope sediments, which can be related to different depositional environments and conditions. It is possible to correlate theses facies stratigraphically with Pleistocene climatic cycles so that specific sedimentation conditions during climatic periods can be reconstructed.
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Grobe, H. Fazielle Gliederung glazialmariner Sediments in the Antarctic. Facies 17, 99–107 (1987). https://doi.org/10.1007/BF02536774
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DOI: https://doi.org/10.1007/BF02536774