Significance of early scapolite in greenschist-facies marbles from the Reynolds Range Group, central Australia

I. S. Buick, I. Cartwright

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Abstract

Marbles from the Upper Calcsilicate Unit of the Reynolds Range Group, central Australia, experienced regional Proterozoic greenschist-facies metamorphism, but preserve relicts of an earlier, higher temperature assemblage. The earlier assemblage is typified by intermediate scapolite that predates regional metamorphic fabrics, and it is pseudomorphed by assemblages that were stable during regional greenschist facies metamorphism. Scapolitization and lowering of isotope ratios probably resulted from pre-regional metamorphic contact metamorphism around early granites. -Authors

Original languageEnglish
Pages (from-to)803-812
Number of pages10
JournalJournal of the Geological Society
Volume151
Issue number5
DOIs
Publication statusPublished - 1 Jan 1994
Externally publishedYes

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