Gneiss complex of the Skaerfjorden region (76 degrees -78 degrees N), North-east Greenland

Joseph M Hull; Johan D Friderichsen; Jane A Gilotti; Niels Henriksen; A. K Higgins; Feiko Kalsbeek

doi:10.34194/rapggu.v162.8247

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Gneiss complex of the Skaerfjorden region (76 degrees -78 degrees N), North-east Greenland

Journal article

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Gneiss complex of the Skaerfjorden region (76 degrees -78 degrees N), North-east Greenland

Joseph M Hull, Johan D Friderichsen, Jane A Gilotti, Niels Henriksen, A. K Higgins and Feiko Kalsbeek

Rapport - Gronlands Geologiske Undersogelse (1964), Vol.162, pp.35-51

1994

DOI: 10.34194/rapggu.v162.8247

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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

Greenland

Structural Geology

Trace Elements

Archean

Arctic region

Caledonian Orogeny

crystalline rocks

deformation

dikes

East Greenland

fabric

folds

gneisses

Igneous and metamorphic petrology

intrusions

major elements

metamorphic rocks

metamorphism

metasedimentary rocks

migmatization

nappes

Northern Greenland

orthogneiss

Paleozoic

Precambrian

Skaerfjorden

Details

Title: Subtitle: Gneiss complex of the Skaerfjorden region (76 degrees -78 degrees N), North-east Greenland
Creators: Joseph M Hull - Seattle Central Community College, Division of Science and Mathematics Seattle, WA USA United States
Johan D Friderichsen
Jane A Gilotti
Niels Henriksen
A. K Higgins
Feiko Kalsbeek
Contributors: A. K Higgins (Editor) - Geological Survey of Greenland Copenhagen DNK Denmark
Resource Type: Journal article
Publication Details: Rapport - Gronlands Geologiske Undersogelse (1964), Vol.162, pp.35-51
DOI: 10.34194/rapggu.v162.8247
ISSN: 0418-6559
eISSN: 2597-2944
Publisher: Gronlands Geologiske Undersogelse
Alternative title: Geology of North-east Greenland
Language: English
Date published: 1994
Academic Unit: Earth and Environmental Sciences
Record Identifier: 9984240905202771

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