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Anorthositic magmas and the origin of proterozoic anorthosite massifs

Nature volume 286, pages 564567 (07 August 1980) | Download Citation

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Abstract

Many anorthositic plutons of the Nain complex were formed from highly feldspathic parental magmas, which were probably generated by melting or factional crystallization of tholeiite at 15–22 kbar. Their existence suggests a high geothermal gradient and thick continental crust during the mid-Proterozoic.

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Affiliations

  1. Department of Geology, Franklin and Marshall College, PO Box 3003, Lancaster, Pennsylvania 17604

    • Robert A. Wiebe

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DOI

https://doi.org/10.1038/286564a0

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