Geology of the granitic terrane, south-west Stewart Island (note)

Open Access
Publisher Website
Google Scholar
Abstract
Field, petrographic, and geochemical data are reported for the granite terrane at Port Pegasus, Stewart Island. Granodiorites predominate but some local variation to tonalite and granite may be recognised. Chemical data suggest emplacement and crystallisation from water-saturated melts at depths of 10–16 km. The granites are locally garnetiferous and an analysis of one such garnet is reported. A mylonite zone transects the western portion of the area and the Tin Range schist belt appears to continue SW as a train of amphibolitic xenoliths. These may be interpreted as a xenolith “screen” between deep level plutons rather than a coherent roof pendant as suggested by earlier workers.

This publication has 5 references indexed in Scilit: