The Carbon Measurements in the Upper Mantle Minerals by the 12C(d,n)13N Nuclear Reaction

Details The Carbon Measurements in the Upper Mantle Minerals by the 12C(d,n)13N Nuclear Reaction The Carbon Measurements in the Upper Mantle Minerals by the 12C(d,n)13N Nuclear Reaction

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27..631k&link_type=abstract

Lunar and Planetary Science, volume 27, page 631

Physics

1

Carbon, Fractionation, Magma, Mantle, Solubility

Scientific paper

The knowledge of carbon solubility in minerals of deep origin by participating in point defect equilibria could be critical to understanding the carbon contents in the mantle rocks and magmas. The carbon measurements in the mantle olivine (Ol), orthopyroxene (OPx) and garnet (Gar) minerals by 12C(d,n)13N reaction show that carbon is dissolved in this crystals in content of 5-100 ppm. The average the carbon content in the orthopyroxenes is higher than in olivines and garnets. The partial melting of carbon-bearing minerals in the absence of free carbon and fluid phase was shown to lead to formation of 300-400 ppm C or 0.1-0.15 wt% CO2 in melt This carbon content in melt is consistent with CO2 content observed in basaltic magmas.

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