Stochastic structure of grain sequences in granitic rocks of Newfoundland as an indicator of initial stages of metasomatism

Abstract

Granitic rocks of Newfoundland are described on the basis of field observations and analysis of grain sequences of essential minerals and are compared with granite, a concept developed in investigation of Eurasian intrusives. Samples included ideal granites and granites affected by the earliest stages of metasomatism. All non-ideal granites have been albitized. Albitization is most intensive in Precambrian adamellites of the Avalon Platform, fine-grained granites of the Gander massif are albitized and silicified, and alkali granites of the Buchens Mine region are K-feldspathized and silicified. — Author.