Sm-Nd systematics of Lewisian gneisses: implications for the origin of granulites

Details Sm-Nd systematics of Lewisian gneisses: implications for the origin of granulites Sm-Nd systematics of Lewisian gneisses: implications for the origin of granulites

Jan 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979natur.277...25h&link_type=abstract

Nature, Volume 277, Issue 5691, pp. 25-28 (1979).

Physics

53

Scientific paper

Sm-Nd isotope systematics of Lewisian gneisses from North-west Scotland
suggest that their igneous calc-alkaline precursors separated from
previously undifferentiated mantle 2,920+/-50 Myr ago. Approximately 200
Myr elapsed before this material was finally differentiated and
stabilised as granulite and amphibolite fades crust.

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