40Ar/39Ar mineral age constraints on the timing of deformation and metamorphism, North-East Greenland

R.D Dallmeyer; R.A Strachan

doi:10.34194/rapggu.v162.8257

40Ar/39Ar mineral age constraints on the timing of deformation and metamorphism, North-East Greenland

Authors

R.D Dallmeyer
R.A Strachan

DOI:

https://doi.org/10.34194/rapggu.v162.8257

Abstract

⁴⁰Ar/³⁹Ar mineral ages have been determined from basement gneisses and cover sequences exposed in the Caledonides of North-East Greenland. These range between c. 438 Ma and c. 370 Ma (Early Silurian – Middle Devonian). They are interpreted as dating cooling folIowing polyphase Caledonian metamorphism which completely rejuvenated intracrystalline argon systems within the (early Proterozoic) basement gneisses. The ⁴⁰Ar/³⁹Ar results indicate that thrust-related regional deformation.

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Published

1994-01-01

How to Cite

Dallmeyer, R., & Strachan, R. (1994). 40Ar/39Ar mineral age constraints on the timing of deformation and metamorphism, North-East Greenland. Rapport Grønlands Geologiske Undersøgelse, 162, 153–162. https://doi.org/10.34194/rapggu.v162.8257

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Issue

Vol. 162 (1994): Geology of North-East Greenland

Section

Article

License

This article is distributed under a CC-BY 4.0 licence, permitting free redistribution and reproduction for any purpose, even commercial, provided proper citation of the original work. Author(s) retain copyright over the article contents.