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Published September 25, 1975 | public
Journal Article

Influence of mantle CO_2 in the generation of carbonatites and kimberlites

Abstract

The explanation of why partial fusion of mantle peridotite sometimes yields basalts, sometimes kimberlites and sometimes carbonatites is given by the phase relationships in the system CaO–MgO–SiO_2–CO_2. The key is the intersection of a sub-solidus carbonation reaction with the solidus, which introduces carbonates as primary minerals alongside silicates on the surface of the liquidus.

Additional Information

© 1975 Nature Publishing Group. Received July 2; accepted July 22, 1975. This work was supported by the NSF.

Additional details

Created:
August 22, 2023
Modified:
October 17, 2023