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

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Authors:Hansen, B. T.; Steiger, R. H.; Henriksen, N.
Author Affiliations:Primary:
Wilhelms-Univ., Inst. Mineral., Munster, Federal Republic of Germany
Other:
Eidg. Tech. Hochsch., Switzerland
Gronlands Geol. Undersogelse, Denmark
Volume Title:Geochronological studies in central East Greenland
Source:Geochronological studies in central East Greenland. Rapport - Gronlands Geologiske Undersogelse (1964), No.134, p.5-18. Publisher: Grønlands Geologiske Undersøgelse, Copenhagen, Denmark. ISSN: 0418-6559
Publication Date:1987
Note:In English. 23 refs.; illus. incl. 3 tables, sketch map
Summary:Five U/Pb age determinations on zircons and 3 Rb/Sr age determinations of some of the late orogenic plutonic bodies from the migmatite and granite zones give ages between 428 and 352 m.y. Together with previously published age determinations, they suggest a main intrusive epoch around 420 m.y. with the last intrusive events as late as 390-350 m.y. Analytical data for six previously published Rb/Sr ages from the region are reassessed and presented in full. [W.S.W.]
Subjects:Absolute age; Caledonian Orogeny; Carboniferous; Dates; Devonian; Geochronology; Igneous rocks; Nesosilicates; Orthosilicates; Paleozoic; Plutonic rocks; Rb/Sr; Silicates; Silurian; U/Pb; Zircon; Zircon group; Arctic region; East Greenland; Greenland; Scoresby Sund
Abstract Numbers:88M/4869
Record ID:1991003367
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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