globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2014.05.018
Scopus记录号: 2-s2.0-84902242337
论文题名:
Controls on Sr/Ca in benthic foraminifera and implications for seawater Sr/Ca during the late Pleistocene
作者: Yu J.; Elderfield H.; Jin Z.; Tomascak P.; Rohling E.J.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 98
起始页码: 1
结束页码: 6
语种: 英语
英文关键词: Benthic foraminifera ; Carbonate ion saturation ; Deep ocean ; Pleistocene ; Sr/Ca
Scopus关键词: Carbonation ; Glacial geology ; Benthic foraminifera ; Carbonate ions ; Deep ocean ; Deep-water carbonates ; Glacial-interglacial cycles ; Late Pleistocene ; Measurements of ; Pleistocene ; Seawater ; benthic foraminifera ; dating method ; deep-sea benthos ; paleoclimate ; Pleistocene ; seawater
英文摘要: Changes in the Sr to Ca ratio of sea water have important implications for the interpretation of past climate. It has proven difficult to interpret Sr/Ca of foraminiferal calcite as a measure of seawater Sr/Ca or as reflecting the influence of deep water carbonate ion saturation (δ[CO3 2-]) on the incorporation of Sr into benthic foraminiferal carbonate. Here, we address this issue by measurements of paired benthic foraminiferal Sr/Ca and B/Ca (a proxy for deep water δ[CO3 2-]) for core-tops from the global ocean and three down cores at different settings during the Last Glacial-interglacial cycle. These new data suggest a significant control of deep water δ[CO3 2-] on benthic foraminiferal Sr/Ca, and that down-core shell Sr/Ca variations can be largely accounted for by past deep water δ[CO3 2-] changes. We conclude that seawater Sr/Ca has likely remained near-constant on glacial-interglacial timescales during the late Pleistocene, in agreement with model results. With due caution, benthic Sr/Ca may be used as an auxiliary proxy for deep water δ[CO3 2-] if seawater Sr/Ca is constant. © 2014 Elsevier Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60200
Appears in Collections:过去全球变化的重建

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作者单位: Research School of Earth Sciences, The Australian National University, Canberra, ACT 0200, Australia; The Godwin Laboratory for Palaeoclimate Research, Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, United Kingdom; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China; Department of Earth Sciences, SUNY Oswego, Oswego, NY 13126, United States; Ocean and Earth Science, University of Southampton, National Oceanography Centre, Southampton SO14 3ZH, United Kingdom

Recommended Citation:
Yu J.,Elderfield H.,Jin Z.,et al. Controls on Sr/Ca in benthic foraminifera and implications for seawater Sr/Ca during the late Pleistocene[J]. Quaternary Science Reviews,2014-01-01,98
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