Gneiss complex of the Skærfjorden region (76°-78°N), North-East Greenland

Authors

  • J.M Hull
  • J.D Friderichsen
  • J.A Gilotti
  • N Henriksen
  • A.K Higgins
  • F Kalsbeek

DOI:

https://doi.org/10.34194/rapggu.v162.8247

Abstract

The crystalline rocks of the Skærfjorden region are dominated by grey migmatitic orthogneisses with smaller bodies of ultramafic, mafic and metasedimentary lithologies. Archaean rocks (c. 3.0 Ga) have been documented, but crustal additions were predominantly Early Proterozoic (2.0–1.75 Ga) in age, reflecting subduction zone magmatism. FolIowing Early Proterozoic orogenesis and migmatisation, granitic sheets (c. 1.7 Ga) and dolerite dykes were intruded. These intrusive rocks were subsequently deformed and metamorphosed in the Caledonian orogeny (c. 400 Ma). The Skærfjorden region is located in the Caledonian hinterland, where orogen parallel stretching and extension followed an early nappe stage.

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Published

1994-01-01

How to Cite

Hull, J., Friderichsen, J., Gilotti, J., Henriksen, N., Higgins, A., & Kalsbeek, F. (1994). Gneiss complex of the Skærfjorden region (76°-78°N), North-East Greenland. Rapport Grønlands Geologiske Undersøgelse, 162, 35–51. https://doi.org/10.34194/rapggu.v162.8247

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.