Journal ArticleDOI
Archaean structural evolution in the northwest of the Buksefjorden Region, southern West Greenland
Brian Chadwick,Allen P. Nutman +1 more
TLDR
In this paper, the authors describe the evolution of northwest Buksefjorden in terms of four principal events: the first, D1, includes a series of phases of deformation and associated high-grade metamorphism that may be related to the injection of parental magmas of the Amitsoq gneisses and consequent disruption of sediments and basic igneous rocks of the Akilia association.About:
This article is published in Precambrian Research.The article was published on 1979-08-01. It has received 71 citations till now. The article focuses on the topics: Metamorphism & Lineation.read more
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The Itsaq Gneiss Complex of southern West Greenland; the world's most extensive record of early crustal evolution (3900-3600 Ma)
TL;DR: The Itsaq Gneiss Complex of southern West Greenland contains the best-preserved occurrences of ⩾ 3600 Ma crust as discussed by the authors, and its known area is ∼ 3000 km2 with almost continuous exposure in some places.
Journal ArticleDOI
Sm-Nd studies of Archaean metasediments and metavolcanics from West Greenland and their implications for the Earth's early history
TL;DR: This paper examined metasedimentary and metavolcanic rocks from the Archaean of West Greenland for evidence of crustal components greater than 3.8 Ga in age and for their compatibility with the presently adopted bulk Earth Sm-Nd parameters.
Journal ArticleDOI
Late Archaean terrane accretion in the Godthåb region, southern West Greenland
TL;DR: In this paper, the authors presented new data from the Archaean high-grade gneiss complex of the Godthab (now Nuuk) region of southern West Greenland, which show that discrete tectonic units recognized in the south of the region can be more widely identified.
Journal ArticleDOI
Meta-igneous (non-gneissic) tonalites and quartz-diorites from an extensive ca. 3800 Ma terrain south of the Isua supracrustal belt, southern West Greenland: constraints on early crust formation
TL;DR: In the Itsaq Gneiss Complex south of the Isua supracrustal belt (West Greenland) some areas of early Archaean tonalite and quartz-diorite are notgneissic, free of pegmatite veins, and in rarer cases are undeformed with relict igneous textures and hence were little modified by heterogeneous ductile deformation under amphibolite facies conditions in several Archaean events.
Journal ArticleDOI
New pieces to the Archaean terrane jigsaw puzzle in the Nuuk region, southern West Greenland: steps in transforming a simple insight into a complex regional tectonothermal model
C. R. L. Friend,Allen P. Nutman +1 more
TL;DR: In the south of the Nuuk region of West Greenland, the authors of as mentioned in this paper distinguish two new terranes in the NE, namely, the northernmost Isukasia terrane and the southernmost Kapisilik terrane.
References
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Mountain belts and the new global tectonics
John F. Dewey,John M. Bird +1 more
TL;DR: In this paper, it is proposed that mountain belts develop by deformation and metamorphism of the sedimentary and volcanic assemblages of Atlantic-type continental margins, resulting from the events associated with the rupture of continents and the expansion of oceans by plate generation at oceanic ridges.
Book
The evolving continents
TL;DR: The Plate Tectonic Paradigm Palaeoclimatology and the Fossil Record Rifts to Oceans Island Acres The Variscan Orogen Caledonian-Appalachian Orogen Late Proterozoic Orogens.
Journal ArticleDOI
On folding during three-dimensional progressive deformation
TL;DR: In this article, the deformation ellipsoid is used to determine the principal axes of compression and extension in any plane, and an expression is derived for determining the lengths of these axes.