A mantle metasomatic injection event linked to late Cretaceous kimberlite magmatism

Details A mantle metasomatic injection event linked to late Cretaceous kimberlite magmatism A mantle metasomatic injection event linked to late Cretaceous kimberlite magmatism

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992natur.360..726k&link_type=abstract

Nature (ISSN 0028-0836), vol. 360, no. 6406, p. 726-728.

Computer Science

8

Biotite, Cretaceous Period, Earth Mantle, Magma, Chemical Composition, Igneous Rocks, Lithosphere

Scientific paper

A precise U-Pb age of 85 +/- 2 Myr is reported for zircons in a veined and metasomatized harzburgite xenolith from Kimberley, which indicates that this particular style of metasomatism is concurrent with the migration of the kimberlite magma that hosts the xenolith. This temporal link supports previous isotopic evidence for a genetic link between the group I kimberlite magmatism and the accompanying metasomatism.

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