期刊名称：Geological Survey of Denmark and Greenland Bulletin
印刷版ISSN：1604-8156
出版年度：2011
卷号：23
页码：65-68
语种：English
出版社：De Nationale Geologiske Undersoegelser for Danmark og Groenland
摘要：This paper describes structural data collected during fieldwork in southern East Greenland, a region characterised bya complex tectonic history. Here, 3D photogeology based onaerial and oblique photographs using high-resolution photogrammetry of a 150 km2 area in Sødalen in southern EastGreenland shows ESE–WNW-trending faults cross-cuttingPaleocene rift structures and flexure-related normal faults.The kinematic analysis highlights oblique and left-lateralstrike-slip movements along faults oriented 120°. Strike-slipand dip-slip kinematic indicators on the walls of the chilledcontacts between alkaline E–W-oriented dykes and the volcanic host rocks suggest that the faults and dykes formedat the same time, or maybe the faults were re-activated at alater stage. Palaeostress analysis, performed by inversion offault-slip data, shows the presence of three different tectonicevents. Coupling the 3D photogeological tool with structural analysis at key localities is a fundamental way to understand better the tectonic history of such a large area.
