M. J. O’Hara
Abstract
The field relations and petrography of ultrabasic and basic gneisses which occur associated in small masses among banded granulite facies gneisses are described. The rocks are ascribed to reaction between ultrabasic intrusive bodies and country rock under granulite facies conditions.
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The field relations and petrography of ultrabasic and basic gneisses which occur associated in small masses among banded granulite facies gneisses are described. The rocks are ascribed to reaction between ultrabasic intrusive bodies and country rock under granulite facies conditions.
Key concepts: Gneiss, Geology, Ultramafic rock, Metamorphic rock, Geochemistry, Petrology