Deformation of the Isua supracrustal belt, southern West Greenland

Abstract

A reconnaissance investigation of the deformation of the Isua supracrustal belt was carried out at the end of the field season. Helicopter transport was kindly provided by Prof. P. E. Cloud Jr. (Univ. of California, Santa Barbara) who was visiting the area to search for possibie early life forms in the rocks of the Isua supracrustal belt. The structures contained within the supracrustal rocks and surrounding gneisses ean be described with reference to two major deformation episodes, here designated Dl and D2.