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Oxygen isotope calibration of the onset of ice-rafting and history of glaciation in the North Atlantic region

Nature

By:
, , , , , , , , , , , , , , , , and
DOI: 10.1038/307620a0

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Abstract

We report here that DSDP Site 552A, cored with the hydraulic piston corer on the west flank of Rockall Bank, recovered an undisturbed sequence of alternating white deep-sea carbonate oozes and dark-coloured layers that are rich in glacial debris. Oxygen isotope analysis of the sequence together with detailed nannofossil and palaeomagnetic stratigraphy shows that the first major horizon of ice-rafting occurred at about 2.4 Myr, and was preceded by a minor pulse of ice-rafting at about 2.5 Myr. The carbon isotope record shows that the site has been bathed by a water mass of similar characteristics to present-day North Atlantic deep water at least since 3.5 Myr. ?? 1984 Nature Publishing Group.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Oxygen isotope calibration of the onset of ice-rafting and history of glaciation in the North Atlantic region
Series title:
Nature
DOI:
10.1038/307620a0
Volume
307
Issue:
5952
Year Published:
1984
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Nature
First page:
620
Last page:
623