Open AccessThe Nagssugtoqidian boundary and the deformation of the Kângamiut dyke swarm in the Søndre Strømfjord area
Author(s) -
A. Escher,
J.C Escher,
J. Watterson
Publication year - 1970
Publication title -
rapport
Language(s) - English
Resource type - Journals
eISSN - 2597-2944
pISSN - 0418-6559
DOI - 10.34194/rapggu.v28.7226
Subject(s) - metamorphism , geology , metamorphic facies , facies , feature (linguistics) , granulite , deformation (meteorology) , boundary (topology) , geomorphology , geochemistry , structural basin , oceanography , mathematical analysis , mathematics , linguistics , philosophy
The season's objective was the reconnaissance mapping of a c. 7000 km2 area lying between Søndre Strømfjord, the Inland Ice and the Sukkertoppen ice capo. An important feature of this region was known to be the progressive northward deformation of the Kangamiut dyke swarm and an associated amphibolite facies metamorphism of both the dykes and their granulite facies country rocks (Noe-Nygaard & Ramberg, 1961). These changes have been regarded as marking the southern limit of Nagssugtoqidian orogenic activity. In order to make a more comprehensive study of this boundary, the reconnaissance was extended to include the c. 3000 km2 area southwest of the Sukkertoppen ice cap, bounded by Søndre Strømfjord and Evigheds Fjord.