U-Pb and Rb-Sr age determinations on Caledonian plutonic rocks in the central part of the Scoresby Sund region, East Greenland

Autor:	B. T. Hansen, N. Henriksen, B Borchardt, R. H. Steiger
Rok vydání:	1987
Předmět:	Pluton Geochemistry Geology
Zdroj:	Rapport Grønlands Geologiske Undersøgelse. 134:5-18
ISSN:	2597-2944 0418-6559
DOI:	10.34194/rapggu.v134.7986
Popis:	Five new U-Pb age determinations on zireons and three new or reanalysed Rb-Sr age determinations of some of the late orogenie plutonic bodies from the Gåseland - Stauning Alper migmatite and granite zone in the Scoresby Sund region, give Caledonian ages between 428 Ma and 352 Ma. Together with previously published age determinations they suggest a main intrusive epoeh around 420 Ma with the last intrusive events as late as 390 - 350 Ma. In addition analytical data for six previously published Rb-Sr ages from the region are reassessed and presented in full.
Databáze:	OpenAIRE
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