Comments on the zoned calc-silicate lenses in the Frederikshåb area

P.B Sørensen

doi:10.34194/rapggu.v15.7176

Abstract

Lenses of zoned calc-silicate rock have been found in many places around Frederikshåb. They have been found not only in the migmatitic gneisses (ef. Walton. 1966) but recently also in unmigmatized hornblende schist layers.

Highlights

In the gneisses the calc-silicate lenses occur as a minor constituent of thin. 2 - 10m thick, horizons consisting dominantly of agmatitic inclusions of amphibolite
In most cases the calcsilicate lenses occur as a part of the agmatitic amphibolite
There is a variation in the size of the lenses, the small ones being 5 -10 cm broad and 10 - 30 cm long and the large ones 30 - 40 cm broad and up to 1 m long

Summary

Introduction

In the gneisses the calc-silicate lenses occur as a minor constituent of thin. 2 - 10m thick, horizons consisting dominantly of agmatitic inclusions of amphibolite. Lenses of zoned calc-silicate rock have been found in many places around Frederikshåb. In the gneisses the calc-silicate lenses occur as a minor constituent of thin. 2 - 10m thick, horizons consisting dominantly of agmatitic inclusions of amphibolite.

Results

Conclusion