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：57-60
语种：English
出版社：De Nationale Geologiske Undersoegelser for Danmark og Groenland
摘要：The Tartoq Group is located in the Sermiligaarsuk fjord region in South-West Greenland in an area of approximately20 × 50 km (Fig. 1). The Tartoq Group consists of severaldiscrete, fault-bound blocks of metavolcanic rocks, surrounded by Archaean tonalite-trondhjemite-granodioritetype (TTG) gneisses. A zircon age of 2996.3 ± 5.9 Ma of aTTG intrusion provides a minimum age for the formation ofthe Tartoq Group (Fig. 2). The metavolcanic rocks probablyshow the lowest degree of metamorphism found anywherein the Archaean craton of Greenland. Here we present a newmodel for the origin of the metavolcanic rocks of the TartoqGroup based on geochemical, metamorphic and structuraldata. The samples used for this study were collected by theGeological Survey of Denmark and Greenland (GEUS)in 2009 and 2010. The study is part of a joint project between the Greenland Bureau of Minerals and Petroleum andGEUS on the mineral potential of south-western Greenland.
