Basin evolution and destruction in an Early Proterozoic continental margin : the Rinkian fold–thrust belt of central West Greenland.
In central West Greenland, early Palaeoproterozoic siliciclastic and carbonate sequences of the Karrat Group (shelf sequences of the Rae craton margin) were deposited in sedimentary basins controlled by NW- and SW-trending linked extensional fault systems. The shelf basins were later filled and over...
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Geological Society of London
2017
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ftunivdurham:oai:dro.dur.ac.uk.OAI2:20822 2023-05-15T16:27:59+02:00 Basin evolution and destruction in an Early Proterozoic continental margin : the Rinkian fold–thrust belt of central West Greenland. Grocott, John McCaffrey, Ken 2017-05-01 application/pdf http://dro.dur.ac.uk/20822/ http://dro.dur.ac.uk/20822/1/20822.pdf http://dro.dur.ac.uk/20822/2/20822P.pdf https://doi.org/10.1144/jgs2016-109 unknown Geological Society of London dro:20822 issn:0016-7649 issn: 2041-479X doi:10.1144/jgs2016-109 http://dro.dur.ac.uk/20822/ https://doi.org/10.1144/jgs2016-109 http://dro.dur.ac.uk/20822/1/20822.pdf http://dro.dur.ac.uk/20822/2/20822P.pdf This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/) CC-BY Journal of the Geological Society, 2017, Vol.174(3), pp.453-467 [Peer Reviewed Journal] Article PeerReviewed 2017 ftunivdurham https://doi.org/10.1144/jgs2016-109 2020-08-06T22:22:35Z In central West Greenland, early Palaeoproterozoic siliciclastic and carbonate sequences of the Karrat Group (shelf sequences of the Rae craton margin) were deposited in sedimentary basins controlled by NW- and SW-trending linked extensional fault systems. The shelf basins were later filled and overtopped by turbidite systems filling a foredeep advancing ahead of a thrust system – the Karrat Fjord thrust system – that propagated west to east. Deformation culminated in emplacement of basement-cored nappes, progressive deformation and high-grade metamorphism at c. 1.87 Ga. Reactivation of lower plate growth faults formed dome- and basin-like folds and related thrusts that refolded the structure of the Karrat Fjord thrust system and inverted the shelf basins. The southern Karrat Fjord thrust system was reworked in a belt of intense ductile NW-directed thrusting – the Nunaarsussuaq thrust system – formed at c. 1.84 Ga at the northern limit of the Nagssugtoqidian orogen. Kinematics of these events are at odds with the consensus view that the Rinkian fold–thrust belt is a northward extension of the Nagssugtoqidian orogen resulting from north–south convergence between the Rae and North Atlantic cratons. Application of structural restoration techniques to basin analysis of Palaeoproterozoic rocks has potential to provide new insights into Proterozoic orogenic processes worldwide. Article in Journal/Newspaper Greenland North Atlantic Durham University: Durham Research Online Greenland Karrat Fjord ENVELOPE(-53.667,-53.667,71.383,71.383) Rae ENVELOPE(-116.053,-116.053,62.834,62.834) Journal of the Geological Society 174 3 453 467 |
institution |
Open Polar |
collection |
Durham University: Durham Research Online |
op_collection_id |
ftunivdurham |
language |
unknown |
description |
In central West Greenland, early Palaeoproterozoic siliciclastic and carbonate sequences of the Karrat Group (shelf sequences of the Rae craton margin) were deposited in sedimentary basins controlled by NW- and SW-trending linked extensional fault systems. The shelf basins were later filled and overtopped by turbidite systems filling a foredeep advancing ahead of a thrust system – the Karrat Fjord thrust system – that propagated west to east. Deformation culminated in emplacement of basement-cored nappes, progressive deformation and high-grade metamorphism at c. 1.87 Ga. Reactivation of lower plate growth faults formed dome- and basin-like folds and related thrusts that refolded the structure of the Karrat Fjord thrust system and inverted the shelf basins. The southern Karrat Fjord thrust system was reworked in a belt of intense ductile NW-directed thrusting – the Nunaarsussuaq thrust system – formed at c. 1.84 Ga at the northern limit of the Nagssugtoqidian orogen. Kinematics of these events are at odds with the consensus view that the Rinkian fold–thrust belt is a northward extension of the Nagssugtoqidian orogen resulting from north–south convergence between the Rae and North Atlantic cratons. Application of structural restoration techniques to basin analysis of Palaeoproterozoic rocks has potential to provide new insights into Proterozoic orogenic processes worldwide. |
format |
Article in Journal/Newspaper |
author |
Grocott, John McCaffrey, Ken |
spellingShingle |
Grocott, John McCaffrey, Ken Basin evolution and destruction in an Early Proterozoic continental margin : the Rinkian fold–thrust belt of central West Greenland. |
author_facet |
Grocott, John McCaffrey, Ken |
author_sort |
Grocott, John |
title |
Basin evolution and destruction in an Early Proterozoic continental margin : the Rinkian fold–thrust belt of central West Greenland. |
title_short |
Basin evolution and destruction in an Early Proterozoic continental margin : the Rinkian fold–thrust belt of central West Greenland. |
title_full |
Basin evolution and destruction in an Early Proterozoic continental margin : the Rinkian fold–thrust belt of central West Greenland. |
title_fullStr |
Basin evolution and destruction in an Early Proterozoic continental margin : the Rinkian fold–thrust belt of central West Greenland. |
title_full_unstemmed |
Basin evolution and destruction in an Early Proterozoic continental margin : the Rinkian fold–thrust belt of central West Greenland. |
title_sort |
basin evolution and destruction in an early proterozoic continental margin : the rinkian fold–thrust belt of central west greenland. |
publisher |
Geological Society of London |
publishDate |
2017 |
url |
http://dro.dur.ac.uk/20822/ http://dro.dur.ac.uk/20822/1/20822.pdf http://dro.dur.ac.uk/20822/2/20822P.pdf https://doi.org/10.1144/jgs2016-109 |
long_lat |
ENVELOPE(-53.667,-53.667,71.383,71.383) ENVELOPE(-116.053,-116.053,62.834,62.834) |
geographic |
Greenland Karrat Fjord Rae |
geographic_facet |
Greenland Karrat Fjord Rae |
genre |
Greenland North Atlantic |
genre_facet |
Greenland North Atlantic |
op_source |
Journal of the Geological Society, 2017, Vol.174(3), pp.453-467 [Peer Reviewed Journal] |
op_relation |
dro:20822 issn:0016-7649 issn: 2041-479X doi:10.1144/jgs2016-109 http://dro.dur.ac.uk/20822/ https://doi.org/10.1144/jgs2016-109 http://dro.dur.ac.uk/20822/1/20822.pdf http://dro.dur.ac.uk/20822/2/20822P.pdf |
op_rights |
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/) |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1144/jgs2016-109 |
container_title |
Journal of the Geological Society |
container_volume |
174 |
container_issue |
3 |
container_start_page |
453 |
op_container_end_page |
467 |
_version_ |
1766017586743476224 |