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Biogeochemical Cycles of Carbon and Sulfur on Early Earth (and on Mars?)The physical and chemical interactions between the atmosphere, hydrosphere, geosphere and biosphere can be examined for elements such as carbon (C) and sulfur (S) that have played central roles for both life and the environment. The compounds of C are highly important, not only as organic matter, but also as atmospheric greenhouse gases, pH buffers in seawater, oxidation-reduction buffers virtually everywhere, and key magmatic constituents affecting plutonism and volcanism. S assumes important roles as an oxidation-reduction partner with C and Fe in biological systems, as a key constituent in magmas and volcanic gases, and as a major influence upon pH in certain environments. These multiple roles of C and S interact across a network of elemental reservoirs interconnected by physical, chemical and biological processes. These networks are termed biogeochemical C and S cycles.
Document ID
20040191782
Acquisition Source
Headquarters
Document Type
Conference Paper
Authors
DesMarais, D. J. (NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2004
Publication Information
Publication: Second Conference on Early Mars: Geologic, Hydrologic, and Climatic Evolution and the Implications for Life
Subject Category
Geosciences (General)
Distribution Limits
Public
Copyright
Public Use Permitted.

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IDRelationTitle20040191770Collected WorksSecond Conference on Early Mars: Geologic Hydrologic, and Climatic Evolution and the Implications for Life
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