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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Wiebe, R. Anorthositic magmas and the origin of proterozoic anorthosite massifs. Nature 286, 564–567 (1980). https://doi.org/10.1038/286564a0
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DOI: https://doi.org/10.1038/286564a0
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