Sedimentological and paleomagnetic investigations on two gravity cores and ODP sites 113-690 and 693 off Kapp Norvegia, Antarctic continental margin ...

Oligocene to Quaternary sediments were recovered from the Antarctic continental margin in the eastern Weddell Sea during ODP Leg 113 and Polarstern expedition ANT-VI. Clay mineral composition and grain size distribution patterns are useful for distinguishing sediments that have been transported by o...

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Bibliographic Details
Main Authors: Grobe, Hannes, Fütterer, Dieter K, Spieß, Volkhard
Format: Article in Journal/Newspaper
Language:English
Published: PANGAEA 1990
Subjects:
Drilling/drill rig
Gravity corer Kiel type
Leg113
ANT-V/4
ANT-VI/3
Joides Resolution
Polarstern
Ocean Drilling Program ODP
Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo
Antarc*
Antarctic
Antarctica
Weddell Sea
Online Access:https://dx.doi.org/10.1594/pangaea.552177
https://doi.pangaea.de/10.1594/PANGAEA.552177
Description
Summary:Oligocene to Quaternary sediments were recovered from the Antarctic continental margin in the eastern Weddell Sea during ODP Leg 113 and Polarstern expedition ANT-VI. Clay mineral composition and grain size distribution patterns are useful for distinguishing sediments that have been transported by ocean currents from those that were ice-rafted. This, in turn, has assisted in providing insights about the changing late Paleogene to Neogene sedimentary environment as the cryosphere developed in Antarctica. During the middle Oligocene, increasing glacial conditions on the continent are indicated by the presence of glauconite sands, that are interpreted to have formed on the shelf and then transported down the continental slope by advancing glaciers or as a result of sea-level lowering. The dominance of illite and a relatively high content of chlorite suggest predominantly physical weathering conditions on the continent. The high content of biogenic opal from the late Miocene to the late Pliocene resulted from ... : Supplement to: Grobe, Hannes; Fütterer, Dieter K; Spieß, Volkhard (1990): Oligocene to Quaternary sedimentation processes on the Antarctic continental margin, ODP Leg 113, Site 693. In: Barker, PF; Kennett, JP; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 113, 121-131 ...

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