Stable oxygen isotope record and age determination of benthic foraminiferal faunas of the Norwegian-Greenland Sea ...
Fluctuations in benthic foraminiferal faunas over the last 130,000 yr in four piston cores from the Norwegian Sea are correlated with the standard worldwide oxygen-isotope stratigraphy. One species, Cibicides wuellerstorfi, dominates in the Holocene section of each core, but alternates downcore with...
Main Authors: | , , , |
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Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
PANGAEA
1982
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Subjects: | |
Online Access: | https://dx.doi.org/10.1594/pangaea.730434 https://doi.pangaea.de/10.1594/PANGAEA.730434 |
Summary: | Fluctuations in benthic foraminiferal faunas over the last 130,000 yr in four piston cores from the Norwegian Sea are correlated with the standard worldwide oxygen-isotope stratigraphy. One species, Cibicides wuellerstorfi, dominates in the Holocene section of each core, but alternates downcore with Oridorsalis tener, a species dominant today only in the deepest part of the basin. O. tener is the most abundant species throughout the entire basin during periods of particularly cold climate when the Norwegian Sea presumably was ice covered year round and surface productivity lowered. Portions of isotope Stages 6, 3, and 2 are barren of benthic foraminifera; this is probably due to lowered benthic productivity, perhaps combined with dilution by ice-rafted sediment; there is no evidence that the Norwegian Sea became azoic. The Holocene and Substage 5e (the last interglacial) are similar faunally. This similarity, combined with other evidence, supports the presumption that the Norwegian Sea was a source of dense ... : Supplement to: Streeter, S S; Belanger, Paul; Kellogg, Thomas B; Duplessy, Jean-Claude (1982): Late Pleistrocene paleo-oceanography of the Norwegian-Greenland Sea: benthic foraminiferal evidence. Quaternary Research, 18(1), 72-90 ... |
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