THE TEMPORALITY OF ANORTHOSITES

@article{Ashwal2010THETO,
  title={THE TEMPORALITY OF ANORTHOSITES},
  author={Lewis D. Ashwal},
  journal={Canadian Mineralogist},
  year={2010},
  volume={48},
  pages={711-728}
}
  • L. Ashwal
  • Published 1 August 2010
  • Geology
  • Canadian Mineralogist
The compositions, textures, associated rocks and tectonic environments of anorthosites allow categorization into six different types, some of which show distinct age-restrictions in terrestrial and planetary history. Primordial, Archean and Proterozoic anorthosites are distinctly different and are restricted in time and space. Those of layered mafic intrusions and ophiolites show no apparent time-restrictions. Primordial anorthosites form the bulk of the lunar crust and possibly that of Mercury… 
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Origin of Archean anorthosites: Evidence from the Bad Vermilion Lake anorthosite complex, Ontario
The Bad Vermilion Lake anorthosite complex (2,700 m.y.) is exposed over an area of about 100 km2 near Rainy Lake, Ontario. As is typical of other Archean anorthosites, it is composed of coarse (1–30
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