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Late Pleistocene and Holocene meltwater events in the western Arctic Ocean

R. Z. Poore, Lisa E. Osterman, W. B. Curry and R. L. Phillips
Late Pleistocene and Holocene meltwater events in the western Arctic Ocean
Geology (Boulder) (August 1999) 27 (8): 759-762

Abstract

Accelerator mass spectrometer (super 14) C dated stable isotope data from Neogloboquadrina pachyerma in cores raised from the Mendeleyev Ridge and slope provide evidence for significant influx of meltwater to the western Arctic Ocean during the early part of marine oxygen isotope stage 1 (OIS 1) and during several intervals within OIS 3. The strongest OIS 3 meltwater event occurred before ca. 45 ka (conventional radiocarbon age) and was probably related to the deglaciation at the beginning of OIS 3. Major meltwater input to the western Arctic Ocean during the last deglaciation coincides closely with the maximum rate of global sea-level rise as determined from the Barbados sea-level record, demonstrating a strong link between the global record and changes in the central Arctic Ocean. OIS 2, which includes the last glacial maximum, is very condensed or absent in the cores. Abundance and delta (super 13) C values for N. pachyderma in the middle part of OIS 3 are similar to modern values, indicating high productivity and seasonal ice-free areas along the Arctic margin at that time. These records indicate that the Arctic Ocean was a source of heat and moisture to the northern polar atmosphere during parts of OIS 3.


ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 27
Serial Issue: 8
Title: Late Pleistocene and Holocene meltwater events in the western Arctic Ocean
Affiliation: U. S. Geological Survey, Reston, VA, United States
Pages: 759-762
Published: 199908
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 19
Accession Number: 1999-055497
Categories: Quaternary geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table, sketch map
N80°19'60" - N80°20'60", W178°43'00" - W178°41'60"
N81°15'30" - N81°16'00", E178°58'00" - E178°58'60"
N82°25'60" - N82°27'00", E175°45'30" - E175°45'30"
Secondary Affiliation: Woods Hole Oceanographic Institution, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 199919
Program Name: USGSOPNon-USGS publications with USGS authors
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