Albitised gneisses in the area between Paakitsoq and Kangerluarsuk, north-east Disko Bugt, West Greenland

Authors

  • Michael J. Ryan Department of Geology, University of Portsmouth, Portsmouth PO1 3HE, UK
  • Jan C. Escher Geological Survey of Denmark and Greenland, Thoravej 8, DK-2400 Copenhagen NV, Denmark

DOI:

https://doi.org/10.34194/ggub.v181.5119

Keywords:

albitisation, Archaean rocks, Disko Bugt, West Greenland

Abstract

Fine-grained rutile-bearing albite-rich rocks (> 95% albite) locally replace Archaean granodioritic orthogneisses in the area between Paakitsoq and Kangerluarsuk, eastern Disko Bugt. They occur as anastomosing networks within albite-rich gneiss and as replacements along linear fracture zones. Albitisation resulted from pervasive metasomatism, but the origin and nature of the albitising fluids are uncertain. A tentative comparison is made with rutile-rich albitites (‘kragerøites’) in southern Norway.

Geological sketch map of the Ataa area north-east of Disko Bugt.

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Published

1999-07-22

Issue

Vol. 181 (1999): Precambrian geology of the Disko Bugt region, West Greenland

Section

RESEARCH 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.

How to Cite

Albitised gneisses in the area between Paakitsoq and Kangerluarsuk, north-east Disko Bugt, West Greenland. (1999). Geology of Greenland Survey Bulletin, 181, 113-117. https://doi.org/10.34194/ggub.v181.5119