Parental magmas of the Nain Plutonic Suite anorthosites and mafic cumulates: a trace element modelling approach

@article{Bdard2001ParentalMO,
  title={Parental magmas of the Nain Plutonic Suite anorthosites and mafic cumulates: a trace element modelling approach},
  author={J. B{\'e}dard},
  journal={Contributions to Mineralogy and Petrology},
  year={2001},
  volume={141},
  pages={747-771}
}
  • J. Bédard
  • Published 2001
  • Geology
  • Contributions to Mineralogy and Petrology
  • Abstract.Equilibrium melt trace element contents are calculated from Proterozoic Nain Plutonic Suite (NPS) mafic and anorthositic cumulates, and from plagioclase and orthopyroxene megacrysts. Assumed trapped melt fractions (TMF) <20% generally eliminate all minor phases in most mafic cumulate rocks, reducing them to mixtures of feldspar, pyroxene and olivine, which would represent the high-temperature cumulus assemblage. In anorthosites, TMF <15% generally reduce the mode to a feldspar-only… CONTINUE READING
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