Petrology of the Whitestone Anorthosite

Abstract

The conclusions of this thesis rest on comprehensive geological, chemical and petrographical analyses of both the Whitestone anorthosite and the contiguous rocks. The anorthosite is believed to have been intruded as a magma of anorthositic composition just after the acme of the last regional metamorphism. Various textural and mineralogical features, ostensibly metamorphic, are interpreted as being due to an extravagantly long magmatic end-game.