Coarse-fraction composition in sediments of ODP Leg 104

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 pr...

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Bibliographic Details
Main Authors: Henrich, Rüdiger, Wolf, Thomas C W, Bohrmann, Gerhard, Thiede, Jörn
Format: Dataset
Language:English
Published: PANGAEA 1989
Subjects:
104-642B
104-642D
104-643A
104-644A
DRILL
Drilling/drill rig
Joides Resolution
Leg104
Norwegian Sea
Ocean Drilling Program
ODP
Greenland
Greenland Sea
North Atlantic
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.756476
https://doi.org/10.1594/PANGAEA.756476
Description
Summary: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.

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