A 1950 ± 60 Ma Rb–Sr whole-rock isochron age from two Kangâmiut dykes and the timing of the Nagssugtoqidian (Hudsonian) orogeny in West Greenland

Thirteen samples from two Kangâmiut dykes give a Rb–Sr whole-rock isochron age of 1950 ± 60 Ma. This age is interpreted as the age of intrusion of the dykes. The post-dyke Nagssugtoqidian orogeny took place between ca. 2000 and ca. 1800 Ma and can be correlated with the Hudsonian in Canada and the L...

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Bibliographic Details
Published in:Canadian Journal of Earth Sciences
Main Authors: Kalsbeek, F., Bridgwater, D., Zeck, H. P.
Format: Article in Journal/Newspaper
Language:English
Published: Canadian Science Publishing 1978
Subjects:
General Earth and Planetary Sciences
Canada
Greenland
Online Access:http://dx.doi.org/10.1139/e78-118
http://www.nrcresearchpress.com/doi/pdf/10.1139/e78-118
Description
Summary:Thirteen samples from two Kangâmiut dykes give a Rb–Sr whole-rock isochron age of 1950 ± 60 Ma. This age is interpreted as the age of intrusion of the dykes. The post-dyke Nagssugtoqidian orogeny took place between ca. 2000 and ca. 1800 Ma and can be correlated with the Hudsonian in Canada and the Laxfordian in Scotland.

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