Carbon and its isotopes in mid-oceanic basaltic glasses

Details Carbon and its isotopes in mid-oceanic basaltic glasses Carbon and its isotopes in mid-oceanic basaltic glasses

Jul 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984e%26psl..69...43d&link_type=abstract

Earth and Planetary Science Letters (ISSN 0012-821X), vol. 69, no. 1, July 1984, p. 43-57. NASA-supported research.

Other

68

Abundance, Basalt, Carbon Isotopes, Geochemistry, Marine Chemistry, Oceans, Carbon Dioxide, Chemical Analysis, Glass, Histograms, Sulfur Dioxides

Scientific paper

Sample 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.

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