The Enigma of Oxygen Isotope Stage 5 in the Central Fram Strait

Köhler, Sabine E. I. and Spielhagen, Robert F. (1990) The Enigma of Oxygen Isotope Stage 5 in the Central Fram Strait Geological History of the Polar Oceans: Arctic versus Antarctic. NATO ASI Series C: Mathematical and Physical Sciences, 308 . Kluwer, Dordrecht, pp. 489-497. DOI 10.1007/978-94-009-2029-3_28.

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Abstract

A stable oxygen isotope stratigraphy for the last 150.000 yr is established in sedimentary cores from the central Fram Strait. Radiometric ages obtained by the U/Th method in one core provide an absolute time framework for the oxygen isotope stratigraphy. The oxygen isotope record from substage 5a in the central Fram Strait is represented by lighter oxygen isotope ratios than substage 5e. This probably reflects lower salinities of the uppermost water column due to intense melting of icebergs and/or the supply of meltwater from adjacent landmasses rather than higher sea surface temperatures.

Document Type: Book chapter
Keywords: Oxygen Isotope, Arctic Ocean Core Depth, Oxygen Isotope Stage, Oxygen Isotope Data
Research affiliation: OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-P-OZ Paleo-Oceanography
DOI etc.: 10.1007/978-94-009-2029-3_28
Date Deposited: 08 May 2019 12:35
Last Modified: 13 May 2019 08:53
URI: http://eprints.uni-kiel.de/id/eprint/46646

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