Linking the Palaeoproterozoic Nagssugtoqidian and Rinkian orogens throught the Disko Bugt region of West Greenland
Palaeoproterozoic Nagssugtoqidian, Rinkian, orogens, Disko Bugt, West Greenland The parallel Trans-Hudson-aged Nagssugtoqidian Orogen and Rinkian Fold Belt of West Greenland have long been considered distinct orogenic belts separated by a zone of low or no Palaeoproterozoic strain in the intervening...
Published in: | Journal of the Geological Society |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2006
|
Subjects: | |
Online Access: | https://curis.ku.dk/portal/da/publications/linking-the-palaeoproterozoic-nagssugtoqidian-and-rinkian-orogens-throught-the-disko-bugt-region-of-west-greenland(f5865e90-6c36-11dc-bee9-02004c4f4f50).html https://doi.org/10.1144/0016-764904-115 |
id |
ftcopenhagenunip:oai:pure.atira.dk:publications/f5865e90-6c36-11dc-bee9-02004c4f4f50 |
---|---|
record_format |
openpolar |
spelling |
ftcopenhagenunip:oai:pure.atira.dk:publications/f5865e90-6c36-11dc-bee9-02004c4f4f50 2024-04-21T08:01:00+00:00 Linking the Palaeoproterozoic Nagssugtoqidian and Rinkian orogens throught the Disko Bugt region of West Greenland Connelly, James N. Thrane, Kristine Krawiec, Adam W. Garde, Adam A. 2006 https://curis.ku.dk/portal/da/publications/linking-the-palaeoproterozoic-nagssugtoqidian-and-rinkian-orogens-throught-the-disko-bugt-region-of-west-greenland(f5865e90-6c36-11dc-bee9-02004c4f4f50).html https://doi.org/10.1144/0016-764904-115 eng eng info:eu-repo/semantics/closedAccess Connelly , J N , Thrane , K , Krawiec , A W & Garde , A A 2006 , ' Linking the Palaeoproterozoic Nagssugtoqidian and Rinkian orogens throught the Disko Bugt region of West Greenland ' , Journal of the Geological Society , vol. 163 , no. 2 , pp. 319-335 . https://doi.org/10.1144/0016-764904-115 article 2006 ftcopenhagenunip https://doi.org/10.1144/0016-764904-115 2024-03-28T01:21:41Z Palaeoproterozoic Nagssugtoqidian, Rinkian, orogens, Disko Bugt, West Greenland The parallel Trans-Hudson-aged Nagssugtoqidian Orogen and Rinkian Fold Belt of West Greenland have long been considered distinct orogenic belts separated by a zone of low or no Palaeoproterozoic strain in the intervening Disko Bugt region. New U–Pb geochronology confirms the continuity of Palaeoproterozoic deformation and metamorphism through this region, thereby directly linking the Nagssugtoqidian Orogen and Rinkian Fold Belt. Furthermore, two newly identified Archaean blocks in this region are interpreted to represent the southern and northern extensions of the Rae and North Atlantic cratons, respectively. Their boundary comprises a 15 km wide belt of distributed, NW-vergent ductile thrusts that deform ultramafic pods and is interpreted to represent the main collisional suture of a single, variably exhumed, >1100 km wide Nagssugtoqidian–Rinkian orogenic system. We conclude that Palaeoproterozoic convergence of a northern Archaean craton carried a south-facing passive margin sedimentary sequence (Karrat Group) towards a south-dipping subduction zone along the North Atlantic Craton. Terminal collision created a high-grade core centred on the magmatic arc of the central Nagssugtoqidian Orogen and a NW-vergent fold and thrust belt in the Rinkian Fold Belt. Article in Journal/Newspaper Disko bugt Greenland North Atlantic University of Copenhagen: Research Journal of the Geological Society 163 2 319 335 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
description |
Palaeoproterozoic Nagssugtoqidian, Rinkian, orogens, Disko Bugt, West Greenland The parallel Trans-Hudson-aged Nagssugtoqidian Orogen and Rinkian Fold Belt of West Greenland have long been considered distinct orogenic belts separated by a zone of low or no Palaeoproterozoic strain in the intervening Disko Bugt region. New U–Pb geochronology confirms the continuity of Palaeoproterozoic deformation and metamorphism through this region, thereby directly linking the Nagssugtoqidian Orogen and Rinkian Fold Belt. Furthermore, two newly identified Archaean blocks in this region are interpreted to represent the southern and northern extensions of the Rae and North Atlantic cratons, respectively. Their boundary comprises a 15 km wide belt of distributed, NW-vergent ductile thrusts that deform ultramafic pods and is interpreted to represent the main collisional suture of a single, variably exhumed, >1100 km wide Nagssugtoqidian–Rinkian orogenic system. We conclude that Palaeoproterozoic convergence of a northern Archaean craton carried a south-facing passive margin sedimentary sequence (Karrat Group) towards a south-dipping subduction zone along the North Atlantic Craton. Terminal collision created a high-grade core centred on the magmatic arc of the central Nagssugtoqidian Orogen and a NW-vergent fold and thrust belt in the Rinkian Fold Belt. |
format |
Article in Journal/Newspaper |
author |
Connelly, James N. Thrane, Kristine Krawiec, Adam W. Garde, Adam A. |
spellingShingle |
Connelly, James N. Thrane, Kristine Krawiec, Adam W. Garde, Adam A. Linking the Palaeoproterozoic Nagssugtoqidian and Rinkian orogens throught the Disko Bugt region of West Greenland |
author_facet |
Connelly, James N. Thrane, Kristine Krawiec, Adam W. Garde, Adam A. |
author_sort |
Connelly, James N. |
title |
Linking the Palaeoproterozoic Nagssugtoqidian and Rinkian orogens throught the Disko Bugt region of West Greenland |
title_short |
Linking the Palaeoproterozoic Nagssugtoqidian and Rinkian orogens throught the Disko Bugt region of West Greenland |
title_full |
Linking the Palaeoproterozoic Nagssugtoqidian and Rinkian orogens throught the Disko Bugt region of West Greenland |
title_fullStr |
Linking the Palaeoproterozoic Nagssugtoqidian and Rinkian orogens throught the Disko Bugt region of West Greenland |
title_full_unstemmed |
Linking the Palaeoproterozoic Nagssugtoqidian and Rinkian orogens throught the Disko Bugt region of West Greenland |
title_sort |
linking the palaeoproterozoic nagssugtoqidian and rinkian orogens throught the disko bugt region of west greenland |
publishDate |
2006 |
url |
https://curis.ku.dk/portal/da/publications/linking-the-palaeoproterozoic-nagssugtoqidian-and-rinkian-orogens-throught-the-disko-bugt-region-of-west-greenland(f5865e90-6c36-11dc-bee9-02004c4f4f50).html https://doi.org/10.1144/0016-764904-115 |
genre |
Disko bugt Greenland North Atlantic |
genre_facet |
Disko bugt Greenland North Atlantic |
op_source |
Connelly , J N , Thrane , K , Krawiec , A W & Garde , A A 2006 , ' Linking the Palaeoproterozoic Nagssugtoqidian and Rinkian orogens throught the Disko Bugt region of West Greenland ' , Journal of the Geological Society , vol. 163 , no. 2 , pp. 319-335 . https://doi.org/10.1144/0016-764904-115 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1144/0016-764904-115 |
container_title |
Journal of the Geological Society |
container_volume |
163 |
container_issue |
2 |
container_start_page |
319 |
op_container_end_page |
335 |
_version_ |
1796941366723346432 |