RAPAKIVI GRANITES, SOUTH-GREENLAND - HYDROTHERMAL ALTERATION OF IGNEOUS LAYERING

A A FINCH, R J REAVY, T N HARRISON, P E BROWN

Research output: Contribution to journalComment/debatepeer-review

3 Citations (Scopus)

Abstract

Igneous layering is developed in the Proterozoic rapakivi granite suite of South Greenland in an area on the south-easternmost coast of the island of Angnikitsoq. The layering at this locality is unusual in that it is defined by interstitial phases. We suggest that large-scale hydrothermal alteration has converted a fine-grained pyroxene cumulate, in which original cumulate pyroxenes occurred in the interstices between larger feldspars, to interstitial biotite and green amphibole.

Original languageEnglish
Pages (from-to)739-742
Number of pages4
JournalJournal of the Geological Society
Volume147
Publication statusPublished - Sept 1990

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