气候变化领域集成服务门户(CCPortal): Sulfur isotopic composition of Cenozoic seawater sulfate

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DOI	10.1126/science.282.5393.1459
	Sulfur isotopic composition of Cenozoic seawater sulfate
	Paytan A.; Kastner M.; Campbell D.; Thiemens M.H.
发表日期	1998
ISSN	0036-8075
起始页码	1459
结束页码	1462
卷号	282 期号:5393
英文摘要	A continuous seawater sulfate sulfur isotope curve for the Cenozoic with a resolution of ~1 million years was generated using marine barite. The sulfur isotopic composition decreased from 19 to 17 per mil between 65 and 55 million years ago, increased abruptly from 17 to 22 per mil between 55 and 45 million years ago, remained nearly constant from 35 to ~2 million years ago, and has decreased by 0.8 per mil during the past 2 million years. A comparison between seawater sulfate and marine carbonate carbon isotope records reveals no clear systematic coupling between the sulfur and carbon cycles over one to several millions of years, indicating that changes in the burial rate of pyrite sulfur and organic carbon did not singularly control the atmospheric oxygen content over short time intervals in the Cenozoic. This finding has implications for the modeling of controls on atmospheric oxygen concentration.
英文关键词	barium sulfate; carbon; isotope; organic matter; oxygen; sea water; sulfate; sulfur; atmospheric chemistry; Cenozoic; isotopic composition; oxygen; seawater; sulfur; article; atmosphere; carbon dioxide fixation; geology; history; marine environment; priority journal; sea; sediment; weather
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/245019
作者单位	Geosciences Research Division, Scripps Institution of Oceanography, 9500 Gilman Drive, San Diego, CA 92093, United States; Chemistry Department, University of California, San Diego, 9500 Gilman Drive, San Diego, CA 92093, United States
推荐引用方式 GB/T 7714	Paytan A.,Kastner M.,Campbell D.,et al. Sulfur isotopic composition of Cenozoic seawater sulfate[J],1998,282(5393).
APA	Paytan A.,Kastner M.,Campbell D.,&Thiemens M.H..(1998).Sulfur isotopic composition of Cenozoic seawater sulfate.Science,282(5393).
MLA	Paytan A.,et al."Sulfur isotopic composition of Cenozoic seawater sulfate".Science 282.5393(1998).