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Unravelling contamination signals in biogenic silica oxygen isotope composition: the role of major and trace element geochemistry

Abstract:

The oxygen isotope composition of diatom silica (δ18Odiatom) provides valuable information for palaeoclimate studies where carbonate proxies are either rare or absent in many lakes and ocean sediments. Unfortunately, mineral and rock fragments found alongside diatoms in most sediments can be problematic as the method used will liberate oxygen from all components within the sediment, producing both high-frequency noise and low-frequency excursions that can resemble climate signals. Removal of ...

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Publication status:
Published

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Publisher copy:
10.1002/jqs.1171

Authors


Brewer, TS More by this author
Mackay, AW More by this author
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Journal:
JOURNAL OF QUATERNARY SCIENCE
Volume:
23
Issue:
4
Pages:
321-330
Publication date:
2008-05-05
DOI:
EISSN:
1099-1417
ISSN:
0267-8179
URN:
uuid:8067b35d-2e44-468a-9a9f-a7276e996765
Source identifiers:
184821
Local pid:
pubs:184821

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