New Data on Upper Quaternary Sediments of the Murmansk Rise in the Barents Sea |
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| Authors: | G A Tarasov I A Pogodina |
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| Institution: | (1) Murmansk Marine Biological Institute, Kola Scientific Center, Russian Academy of Sciences, ul. Vladimirskaya 17, Murmansk, 183010, Russia |
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| Abstract: | The detailed study of sections of two boreholes drilled on the Murmansk Rise of the Barents Sea provided new data on lithology, granulometric composition of sediments, and distribution of oxides and some minerals of the heavy fraction. The biostratigraphic subdivision of Upper Quaternary sediments is based on foraminifers. The recovered glaciomarine Quaternary sediments accumulated in marine periglacial environments. Foraminiferal assemblages dominated by Retroelphidium clavatumand Cassidulina reniforme, which reflect extreme (proximal and distal) glaciomarine environments are replaced upward the section by those formed in normal marine environments. The latter are dominated by Nonion labradoricumand Melonis barleeanus. |
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