Relation between salt diapirism and the tectonic history of the Sverdrup Basin, Arctic Canada
The Sverdrup Basin is a pericratonic sedimentary trough in northern Canada containing up to 13 km of Carboniferous to Tertiary strata. The basin formed by late Paleozoic continental rifting and was subsequently affected by a series of alternating tectonic settings. Evaporite diapirs are well exposed...
Published in: | Canadian Journal of Earth Sciences |
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Canadian Science Publishing
1992
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Online Access: | http://dx.doi.org/10.1139/e92-213 http://www.nrcresearchpress.com/doi/pdf/10.1139/e92-213 |
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crcansciencepubl:10.1139/e92-213 2024-09-09T19:26:42+00:00 Relation between salt diapirism and the tectonic history of the Sverdrup Basin, Arctic Canada Stephenson, Randell A. Berkel, Jean T. van Cloetingh, Sierd A. P. L. 1992 http://dx.doi.org/10.1139/e92-213 http://www.nrcresearchpress.com/doi/pdf/10.1139/e92-213 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 29, issue 12, page 2695-2705 ISSN 0008-4077 1480-3313 journal-article 1992 crcansciencepubl https://doi.org/10.1139/e92-213 2024-07-25T04:10:08Z The Sverdrup Basin is a pericratonic sedimentary trough in northern Canada containing up to 13 km of Carboniferous to Tertiary strata. The basin formed by late Paleozoic continental rifting and was subsequently affected by a series of alternating tectonic settings. Evaporite diapirs are well exposed at the present erosion level and occur mainly along the basin axis. The diapiric source layer consists of about 400 m of anhydrite underlain by salt of unknown stratigraphic thickness, deposited during the initial Permo-Carboniferous synrift phase of basin subsidence. Large salt–anhydrite diapirs rose into the sedimentary overburden when the overburden had reached a thickness of several kilometres. They grew during a relatively long period of modest horizontal compression from the Permo-Triassic to Early Cretaceous. Much smaller, tabular anhydrite diapirs were rapidly emplaced during periods of high horizontal compression, in the middle Cretaceous, when large flexural stresses were induced by sedimentary loading, and during the early Tertiary when high intraplate compression resulted from far-field tectonic forces during the Eurekan orogeny.The diapiric behaviour of dense anhydrite implies that buoyancy alone was incapable of driving the diapirism in the Sverdrup Basin. The importance of other driving forces, such as differential loading, basement or overburden faulting, extension, and thermal convection, is thought to be secondary. This suggests a correlation between diapirism and periods of significant horizontal compression, implying that plate-tectonic forces and flexural loading are important driving mechanisms of evaporite diapirism in the Sverdrup Basin. Article in Journal/Newspaper Arctic sverdrup basin Canadian Science Publishing Arctic Canada Canadian Journal of Earth Sciences 29 12 2695 2705 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
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English |
description |
The Sverdrup Basin is a pericratonic sedimentary trough in northern Canada containing up to 13 km of Carboniferous to Tertiary strata. The basin formed by late Paleozoic continental rifting and was subsequently affected by a series of alternating tectonic settings. Evaporite diapirs are well exposed at the present erosion level and occur mainly along the basin axis. The diapiric source layer consists of about 400 m of anhydrite underlain by salt of unknown stratigraphic thickness, deposited during the initial Permo-Carboniferous synrift phase of basin subsidence. Large salt–anhydrite diapirs rose into the sedimentary overburden when the overburden had reached a thickness of several kilometres. They grew during a relatively long period of modest horizontal compression from the Permo-Triassic to Early Cretaceous. Much smaller, tabular anhydrite diapirs were rapidly emplaced during periods of high horizontal compression, in the middle Cretaceous, when large flexural stresses were induced by sedimentary loading, and during the early Tertiary when high intraplate compression resulted from far-field tectonic forces during the Eurekan orogeny.The diapiric behaviour of dense anhydrite implies that buoyancy alone was incapable of driving the diapirism in the Sverdrup Basin. The importance of other driving forces, such as differential loading, basement or overburden faulting, extension, and thermal convection, is thought to be secondary. This suggests a correlation between diapirism and periods of significant horizontal compression, implying that plate-tectonic forces and flexural loading are important driving mechanisms of evaporite diapirism in the Sverdrup Basin. |
format |
Article in Journal/Newspaper |
author |
Stephenson, Randell A. Berkel, Jean T. van Cloetingh, Sierd A. P. L. |
spellingShingle |
Stephenson, Randell A. Berkel, Jean T. van Cloetingh, Sierd A. P. L. Relation between salt diapirism and the tectonic history of the Sverdrup Basin, Arctic Canada |
author_facet |
Stephenson, Randell A. Berkel, Jean T. van Cloetingh, Sierd A. P. L. |
author_sort |
Stephenson, Randell A. |
title |
Relation between salt diapirism and the tectonic history of the Sverdrup Basin, Arctic Canada |
title_short |
Relation between salt diapirism and the tectonic history of the Sverdrup Basin, Arctic Canada |
title_full |
Relation between salt diapirism and the tectonic history of the Sverdrup Basin, Arctic Canada |
title_fullStr |
Relation between salt diapirism and the tectonic history of the Sverdrup Basin, Arctic Canada |
title_full_unstemmed |
Relation between salt diapirism and the tectonic history of the Sverdrup Basin, Arctic Canada |
title_sort |
relation between salt diapirism and the tectonic history of the sverdrup basin, arctic canada |
publisher |
Canadian Science Publishing |
publishDate |
1992 |
url |
http://dx.doi.org/10.1139/e92-213 http://www.nrcresearchpress.com/doi/pdf/10.1139/e92-213 |
geographic |
Arctic Canada |
geographic_facet |
Arctic Canada |
genre |
Arctic sverdrup basin |
genre_facet |
Arctic sverdrup basin |
op_source |
Canadian Journal of Earth Sciences volume 29, issue 12, page 2695-2705 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e92-213 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
29 |
container_issue |
12 |
container_start_page |
2695 |
op_container_end_page |
2705 |
_version_ |
1809896254905253888 |