Cenozoic Paleoclimatic and Paleoceanographic Changes in the Northern Hemisphere Revealed by Variability of Coarse-Fraction Composition in Sediments from the Vøring Plateau—ODP Leg 104 Drill Sites.

Henrich, Rüdiger, Wolf, T., Bohrmann, G. and Thiede, Jörn (1989) Cenozoic Paleoclimatic and Paleoceanographic Changes in the Northern Hemisphere Revealed by Variability of Coarse-Fraction Composition in Sediments from the Vøring Plateau—ODP Leg 104 Drill Sites. Open Access Proceedings of the Ocean Drilling Program: Scientific Results, 104 . pp. 75-188. DOI 10.2973/odp.proc.sr.104.196.1989.

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Abstract

Coarse-fraction studies of sediments recovered during ODP Leg 104 are used to reconstruct paleoclimatic and paleoceanographic environments on a time scale of 0.1 to 0.5 m.y. for the past 20 Ma. These investigations suggest that relatively warm climates and isolated deep water conditions prevailed prior to 13.6 Ma and between 5.6-4.8 Ma. The first major deep water outflow from the Norwegian-Greenland Sea into the North Atlantic took place at about 13.6 Ma. Progressive cooling linked to increased deep water renewal in the Norwegian-Greenland Sea appears to have occurred between 13.6-5.6 Ma and 4.8-3.1 Ma. A major onset of ice-rafted debris is recorded at 2.56 Ma. Terrigenous coarsefraction components show important fluctuations with two major peaks during the past 0.8 Ma.

Document Type: Article
Keywords: Paleoclimatic change, Paleoceanographic change, Cenozoic, Northern Hermisphere, Vøring Plateau,ODP Leg 104
Research affiliation: OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-P-OZ Paleo-Oceanography
Refereed: No
Open Access Journal?: Yes
DOI etc.: 10.2973/odp.proc.sr.104.196.1989
ISSN: 1096-7451
Projects: ODP
Date Deposited: 13 May 2019 12:57
Last Modified: 14 May 2019 12:10
URI: http://oceanrep.geomar.de/id/eprint/46701

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