The relationship between the Charleston metamorphic group and the Greenland Group in the Central Paparoa Range, South Island, New Zealand

Abstract

Large differences in chemistry, petrology, texture and structure betweeen the gneiss and the Greenland Group, together with the lack of a thermal aureole, indicate that the Charleston Metamorphic Group cannot be metamorphosed Greenland Group as has previously been suggested. Although overthrusting cannot be discounted, it seems more probable that the Greenland Group was unconformably deposited on the Charleston Metamorphic Group.