气候变化领域集成服务门户(CCPortal): The paleoproterozoic snowball Earth: A climate disaster triggered by the evolution of oxygenic photosynthesis

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DOI	10.1073/pnas.0504878102
	The paleoproterozoic snowball Earth: A climate disaster triggered by the evolution of oxygenic photosynthesis
	Kopp R.E.; Kirschvink J.L.; Hilburn I.A.; Nash C.Z.
发表日期	2005
ISSN	0027-8424
起始页码	11131
结束页码	11136
卷号	102 期号:32
英文摘要	Although biomarker, trace element, and isotopic evidence have been used to claim that oxygenic photosynthesis evolved by 2.8 giga-annum before present (Ga) and perhaps as early as 3.7 Ga, a skeptical examination raises considerable doubt about the presence of oxygen producers at these times. Geological features suggestive of oxygen, such as red beds, lateritic paleosols, and the return of sedimentary sulfate deposits after a ≈900-million year hiatus, occur shortly before the ≈2.3-2.2 Ga Makganyene "snowball Earth" (global glaciation). The massive deposition of Mn, which has a high redox potential, practically requires the presence of environmental oxygen after the snowball. New age constraints from the Transvaal Supergroup of South Africa suggest that all three glaciations in the Huronian Supergroup of Canada predate the Snowball event. A simple cyanobacterial growth model incorporating the range of C, Fe, and P fluxes expected during a partial glaciation in an anoxic world with high-Fe oceans indicates that oxygenic photosynthesis could have destroyed a methane greenhouse and triggered a snowball event on timescales as short as 1 million years. As the geological evidence requiring oxygen does not appear during the Pongola glaciation at 2.9 Ga or during the Huronian glaciations, we argue that oxygenic cyanobacteria evolved and radiated shortly before the Makganyene snowball. © 2005 by The National Academy of Sciences of the USA.
英文关键词	Cyanobacteria; Huronian glaciations; Makganyene glaciation; Oxygen
语种	英语
scopus关键词	carbonic acid; cyanocobalamin; gallium; hopanoid; iron; lead; manganese; methane; oxygen; silicate; snow; squalene monooxygenase; sterol 14alpha demethylase; sulfate; sulfur; trace element; Archaebacterium; biogeochemical cycling; biosphere; Canada; cholesterol synthesis; climate; Cyanobacterium; Dinoflagellate; evolution; fossil; Geobacter; glacier; greenhouse; Huronian glaciation; Makganyene glaciation; methanotrophic bacterium; Methylobacterium organophilum; nonhuman; oxidation reduction potential; Paleoproterozoic; Paleozoic; photosynthesis; photosystem II; phototrophic bacterium; Pongola glaciation; priority journal; review; South Africa; stratigraphy; Carbon; Climate; Cyanobacteria; Earth (Planet); Evolution; Fossils; Geology; Ice Cover; Iron; Manganese; Models, Biological; Oxygen; Phosphorus; Photosynthesis; Sulfur; Time Factors; Triterpenes; Cyanobacteria
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159192
作者单位	Kopp, R.E., Division of Geological and Planetary Sciences, California Institute of Technology 170-25, Pasadena, CA 97725, United States; Kirschvink, J.L., Division of Geological and Planetary Sciences, California Institute of Technology 170-25, Pasadena, CA 97725, United States; Hilburn, I.A., Division of Geological and Planetary Sciences, California Institute of Technology 170-25, Pasadena, CA 97725, United States; Nash, C.Z., Division of Geological and Planetary Sciences, California Institute of Technology 170-25, Pasadena, CA 97725, United States
推荐引用方式 GB/T 7714	Kopp R.E.,Kirschvink J.L.,Hilburn I.A.,et al. The paleoproterozoic snowball Earth: A climate disaster triggered by the evolution of oxygenic photosynthesis[J],2005,102(32).
APA	Kopp R.E.,Kirschvink J.L.,Hilburn I.A.,&Nash C.Z..(2005).The paleoproterozoic snowball Earth: A climate disaster triggered by the evolution of oxygenic photosynthesis.Proceedings of the National Academy of Sciences of the United States of America,102(32).
MLA	Kopp R.E.,et al."The paleoproterozoic snowball Earth: A climate disaster triggered by the evolution of oxygenic photosynthesis".Proceedings of the National Academy of Sciences of the United States of America 102.32(2005).