Early Proterozoic thrust tectonics east of Ataa Sund

• Main Authors: North-east Disko Bugt, West Greenl, Jan C. Escher, Michael J. Ryan, Mogens Marker
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Archaean rocks; Disko Bugt; Proterozoic; thrust tectonics; West Greenland The Ataa area; north-east Disko Bugt; lies between the early Proterozoic Nagssugtoqidian and Rinkian orogenic; Ataa Sund; Greenland; Sund; Disko bugt
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.619.9355; http://www.geus.dk/publications/bull-gl/nr181/nr181_p171-179.pdf

The area east of Ataa Sund consists mainly of amphibolite facies grade Archaean gneisses, amphi-bolites and granites. Intense early Proterozoic deformation led to low-angle ductile imbrication of thrust sheets with movement directions to the west. Late tectonic Proterozoic basic sills with olivine-rich cumulates were intruded along the thrust sheets.