The metamorphic evolution of the Bamble Sector, South Norway: a paragenetic and mineral chemical study of cordierite-orthoamphibole-bearing rocks with special reference to borosilicate-bearing mineral assemblages

Abstract

In this thesis the results of a mineral chemical and paragenetic study of cordieriteorthoamphibole- bearing rocks from the Mid-Proterozoic Bamble Sector, south Norway are presented. The scope of this study was 1) to deepen the knowledge of the metamorphic evolution of the amphibolite to granulite facies grade Bamble Sector, 2) to study the regional metamorphic fluid variation in cordierite-bearing rocks, and 3) to provide some insights on the behaviour of boron in the lower continental crust by studying borosilicatebearing mineral assemblages.