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Evidence for a major change in silicon cycling in the subarctic North Pacific at 2.73 Ma

Abstract:

The initiation of Northern Hemisphere glaciation in the subarctic North Pacific at ~2.73 Ma was marked by an abrupt cessation of high opaline accumulation, considered to result from an increased stratification of the water column that should have led to higher utilization of nutrients in the surface ocean. We present a new stable Si isotope-based record of Si utilization that is hard to reconcile with this model. A drop in 30Si/28Si by 0.4‰ at 2.73 Ma is coincident with an increase in bulk N ...

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Publication status:
Published

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Publisher copy:
10.1029/2007PA001563

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Institution:
University of Oxford
Division:
MPLS
Department:
Earth Sciences
Role:
Author
Journal:
PALEOCEANOGRAPHY
Volume:
23
Issue:
4
Pages:
n/a-n/a
Publication date:
2008-12-27
DOI:
ISSN:
0883-8305
Source identifiers:
82878
Language:
English
Pubs id:
pubs:82878
UUID:
uuid:ce72d06f-d2d9-44ec-8c8a-5d491ad87c84
Local pid:
pubs:82878
Deposit date:
2012-12-19

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