The Archaean Atâ intrusive complex (Atâ tonalite)
The 2800 Ma Atâ intrusive complex (elsewhere referred to as ‘Atâ granite ’ or ‘Atâ tonalite’), which occupies an area of c. 400 km2 in the area north-east of Disko Bugt, was emplaced into grey migmatitic gneisses and supracrustal rocks. At its southern border the Atâ complex is cut by younger granit...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.613.4378 2023-05-15T16:01:06+02:00 The Archaean Atâ intrusive complex (Atâ tonalite) North-east Disko Bugt West Greenl Feiko Kalsbeek Lilian Skjernaa The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.613.4378 http://www.geus.dk/publications/bull-gl/nr181/nr181_p103-112.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.613.4378 http://www.geus.dk/publications/bull-gl/nr181/nr181_p103-112.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.geus.dk/publications/bull-gl/nr181/nr181_p103-112.pdf The area north-east of Disko Bugt consists mainly of polyphase Archaean grey gneisses and sequences text ftciteseerx 2016-01-08T14:37:25Z The 2800 Ma Atâ intrusive complex (elsewhere referred to as ‘Atâ granite ’ or ‘Atâ tonalite’), which occupies an area of c. 400 km2 in the area north-east of Disko Bugt, was emplaced into grey migmatitic gneisses and supracrustal rocks. At its southern border the Atâ complex is cut by younger granites. The complex is divided by a belt of supracrustal rocks into a western, mainly tonalitic part, and an eastern part consisting mainly of granodiorite and trondhjemite. The ‘eastern complex ’ is a classical pluton. It is little deformed in its central part, displaying well-preserved igneous layering and local orbicular textures. Near its intrusive contact with the overlying supracrustal rocks the rocks become foliated, with foliation parallel to the contact. The Atâ intrusive complex has escaped much of the later Archaean and early Proterozoic deformation and metamorphism that characterises the gneisses to the north and to the south; it belongs to the best-preserved Archaean tonalite-trondhjemite-granodiorite intrusions in Greenland. Text Disko bugt Greenland Unknown Greenland |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
topic |
The area north-east of Disko Bugt consists mainly of polyphase Archaean grey gneisses and sequences |
spellingShingle |
The area north-east of Disko Bugt consists mainly of polyphase Archaean grey gneisses and sequences North-east Disko Bugt West Greenl Feiko Kalsbeek Lilian Skjernaa The Archaean Atâ intrusive complex (Atâ tonalite) |
topic_facet |
The area north-east of Disko Bugt consists mainly of polyphase Archaean grey gneisses and sequences |
description |
The 2800 Ma Atâ intrusive complex (elsewhere referred to as ‘Atâ granite ’ or ‘Atâ tonalite’), which occupies an area of c. 400 km2 in the area north-east of Disko Bugt, was emplaced into grey migmatitic gneisses and supracrustal rocks. At its southern border the Atâ complex is cut by younger granites. The complex is divided by a belt of supracrustal rocks into a western, mainly tonalitic part, and an eastern part consisting mainly of granodiorite and trondhjemite. The ‘eastern complex ’ is a classical pluton. It is little deformed in its central part, displaying well-preserved igneous layering and local orbicular textures. Near its intrusive contact with the overlying supracrustal rocks the rocks become foliated, with foliation parallel to the contact. The Atâ intrusive complex has escaped much of the later Archaean and early Proterozoic deformation and metamorphism that characterises the gneisses to the north and to the south; it belongs to the best-preserved Archaean tonalite-trondhjemite-granodiorite intrusions in Greenland. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
North-east Disko Bugt West Greenl Feiko Kalsbeek Lilian Skjernaa |
author_facet |
North-east Disko Bugt West Greenl Feiko Kalsbeek Lilian Skjernaa |
author_sort |
North-east Disko Bugt |
title |
The Archaean Atâ intrusive complex (Atâ tonalite) |
title_short |
The Archaean Atâ intrusive complex (Atâ tonalite) |
title_full |
The Archaean Atâ intrusive complex (Atâ tonalite) |
title_fullStr |
The Archaean Atâ intrusive complex (Atâ tonalite) |
title_full_unstemmed |
The Archaean Atâ intrusive complex (Atâ tonalite) |
title_sort |
archaean atâ intrusive complex (atâ tonalite) |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.613.4378 http://www.geus.dk/publications/bull-gl/nr181/nr181_p103-112.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Disko bugt Greenland |
genre_facet |
Disko bugt Greenland |
op_source |
http://www.geus.dk/publications/bull-gl/nr181/nr181_p103-112.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.613.4378 http://www.geus.dk/publications/bull-gl/nr181/nr181_p103-112.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766397093009686528 |