氧气
大气氧
海洋学
古生物学
碳循环
句号(音乐)
析氧
地质学
环境科学
生物
生态学
化学
物理
有机化学
电极
物理化学
生态系统
声学
电化学
作者
Paul G. Falkowski,Miriam Katz,Allen J. Milligan,Katja Fennel,Benjamin S. Cramer,M.-P. Aubry,Robert A. Berner,Michael J. Novacek,Warren M. Zapol
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2005-09-29
卷期号:309 (5744): 2202-2204
被引量:318
标识
DOI:10.1126/science.1116047
摘要
On the basis of a carbon isotopic record of both marine carbonates and organic matter from the Triassic-Jurassic boundary to the present, we modeled oxygen concentrations over the past 205 million years. Our analysis indicates that atmospheric oxygen approximately doubled over this period, with relatively rapid increases in the early Jurassic and the Eocene. We suggest that the overall increase in oxygen, mediated by the formation of passive continental margins along the Atlantic Ocean during the opening phase of the current Wilson cycle, was a critical factor in the evolution, radiation, and subsequent increase in average size of placental mammals.
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