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U-Pb Zircon Provenance of Metasedimentary Basement of the Northwestern Terrane, Svalbard: A central East Greenland correlation
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för geologi och geokemi.
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för geologi och geokemi.
2007 (engelsk)Konferansepaper, Publicerat paper (Annet vitenskapelig)
Abstract [en]

Svalbard’s Caledonian and older bedrock consists of three main exotic terranes separated by north-south trending strike-slip faults. Early in the 19th century Kulling (1930, 1934) noted the striking similarity between the Neoproterozoic and Early Paleozoic sedimentary rocks from East Greenland and Svalbard’s Eastern Terrane. After this pioneering work Harland et al. (1969) documented their remarkable similarities through detailed stratigraphic correlation of Neoproterozoic and Early Paleozoic sedimentary rocks. Recent work in the Northwestern and the eastern part of the Eastern terrane shows that this metasedimentary basement has a strong resemblance to the Krummedal and Smallefjord sequences of central East Greenland, with Grenville age (sensu lato) granitoid intrusion followed by Caledonian migmatization and granite genesis. We present the first LA-ICP-MS U-Pb zircon provenance study on quartzites and mica schists from the Kongsfjorden Group of the Northwestern Terrane of Svalbard. These results indicate a strong correlation with the Krummedal of central East Greenland and help to constrain paleogeographic reconstructions of the Northwestern Terrane.

sted, utgiver, år, opplag, sider
2007.
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URN: urn:nbn:se:su:diva-15778OAI: oai:DiVA.org:su-15778DiVA: diva2:182298
Konferanse
American Geophysical Union, Fall Meeting 2007
Tilgjengelig fra: 2008-12-10 Laget: 2008-12-10 Sist oppdatert: 2012-11-20bibliografisk kontrollert

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