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Carbon and its isotopes in mid-oceanic basaltic glassesSample surface carbon, mantle carbon dioxide in vesicles, and mantle carbon dissolved in glasses, are the three carbon components evident in the 11 mid-oceanic basalts presently analyzed. The total carbon content may be controlled by the depth of the shallowest ridge magma chamber, and carbon isotopic fractionation accompanies magma degassing. Using He-3 and carbon data for submarine hydrothermal fluids, the present day midoceanic ridge carbon flux is approximately estimated to be 1.0 x 10 to the 13th g C/yr, requiring 8 Gyr to accumulate the earth's present crustal carbon inventory.
Document ID
19840062310
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Des Marais, D. J.
(NASA Ames Research Center Moffett Field, CA, United States)
Moore, J. G.
(U.S. Geological Survey Menlo Park, CA, United States)
Date Acquired
August 12, 2013
Publication Date
July 1, 1984
Publication Information
Publication: Earth and Planetary Science Letters
Volume: 69
Issue: 1, Ju
ISSN: 0012-821X
Subject Category
Geophysics
Accession Number
84A45097
Distribution Limits
Public
Copyright
Other

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