The intracratonic Paleoproterozoic Forward orogeny, and implications for regional correlations, Northwest Territories, Canada
Reflection seismic data from the Colville Hills and Anderson Plain document an intracratonic compressional event, herein named the Forward orogeny, which affected strata considered equivalent to the >1663 Ma Hornby Bay Group outcropping on Coppermine Homocline. Forward orogeny structures were pen...
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crcansciencepubl:10.1139/e95-152 2024-09-09T19:37:01+00:00 The intracratonic Paleoproterozoic Forward orogeny, and implications for regional correlations, Northwest Territories, Canada Cook, D. G. MacLean, B. C. 1995 http://dx.doi.org/10.1139/e95-152 http://www.nrcresearchpress.com/doi/pdf/10.1139/e95-152 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 32, issue 11, page 1991-2008 ISSN 0008-4077 1480-3313 journal-article 1995 crcansciencepubl https://doi.org/10.1139/e95-152 2024-07-25T04:10:03Z Reflection seismic data from the Colville Hills and Anderson Plain document an intracratonic compressional event, herein named the Forward orogeny, which affected strata considered equivalent to the >1663 Ma Hornby Bay Group outcropping on Coppermine Homocline. Forward orogeny structures were peneplaned and unconformably overlain by strata considered equivalent to the >1267 Ma Dismal Lakes Group. A comparable tectonic history is recorded in the exposed rocks of Coppermine Homocline to the east. Structural orientations indicate a general northwest–southeast direction of maximum compression during an early phase and a more west–east direction in a later phase. Regional sequence A of G.M. Young and co-workers is subdivided into preorogenic sequence A1 (Hornby Bay and equivalents), and postorogenic sequences A2 (Dismal Lakes and equivalents) and A3 (Coppermine River group and equivalents). The Forward orogeny, dated as approximately 1663 Ma (the age of the syntectonic Kaertok Formation on Coppermine Homocline), is not related to the 1.84–1.9 Ga Wopmay Orogen. Relationships between the Forward orogeny and the Racklan orogeny, in the Wernecke and Ogilvie mountains, remain unresolved because the age of the Racklan is uncertain. Article in Journal/Newspaper Coppermine River Northwest Territories Ogilvie Mountains Canadian Science Publishing Canada Dismal Lakes ENVELOPE(-117.120,-117.120,67.434,67.434) Hornby Bay ENVELOPE(-118.087,-118.087,66.467,66.467) Northwest Territories Ogilvie ENVELOPE(-139.746,-139.746,63.563,63.563) Ogilvie Mountains ENVELOPE(-138.254,-138.254,64.583,64.583) Wernecke ENVELOPE(-135.271,-135.271,63.952,63.952) Canadian Journal of Earth Sciences 32 11 1991 2008 |
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Open Polar |
collection |
Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
Reflection seismic data from the Colville Hills and Anderson Plain document an intracratonic compressional event, herein named the Forward orogeny, which affected strata considered equivalent to the >1663 Ma Hornby Bay Group outcropping on Coppermine Homocline. Forward orogeny structures were peneplaned and unconformably overlain by strata considered equivalent to the >1267 Ma Dismal Lakes Group. A comparable tectonic history is recorded in the exposed rocks of Coppermine Homocline to the east. Structural orientations indicate a general northwest–southeast direction of maximum compression during an early phase and a more west–east direction in a later phase. Regional sequence A of G.M. Young and co-workers is subdivided into preorogenic sequence A1 (Hornby Bay and equivalents), and postorogenic sequences A2 (Dismal Lakes and equivalents) and A3 (Coppermine River group and equivalents). The Forward orogeny, dated as approximately 1663 Ma (the age of the syntectonic Kaertok Formation on Coppermine Homocline), is not related to the 1.84–1.9 Ga Wopmay Orogen. Relationships between the Forward orogeny and the Racklan orogeny, in the Wernecke and Ogilvie mountains, remain unresolved because the age of the Racklan is uncertain. |
format |
Article in Journal/Newspaper |
author |
Cook, D. G. MacLean, B. C. |
spellingShingle |
Cook, D. G. MacLean, B. C. The intracratonic Paleoproterozoic Forward orogeny, and implications for regional correlations, Northwest Territories, Canada |
author_facet |
Cook, D. G. MacLean, B. C. |
author_sort |
Cook, D. G. |
title |
The intracratonic Paleoproterozoic Forward orogeny, and implications for regional correlations, Northwest Territories, Canada |
title_short |
The intracratonic Paleoproterozoic Forward orogeny, and implications for regional correlations, Northwest Territories, Canada |
title_full |
The intracratonic Paleoproterozoic Forward orogeny, and implications for regional correlations, Northwest Territories, Canada |
title_fullStr |
The intracratonic Paleoproterozoic Forward orogeny, and implications for regional correlations, Northwest Territories, Canada |
title_full_unstemmed |
The intracratonic Paleoproterozoic Forward orogeny, and implications for regional correlations, Northwest Territories, Canada |
title_sort |
intracratonic paleoproterozoic forward orogeny, and implications for regional correlations, northwest territories, canada |
publisher |
Canadian Science Publishing |
publishDate |
1995 |
url |
http://dx.doi.org/10.1139/e95-152 http://www.nrcresearchpress.com/doi/pdf/10.1139/e95-152 |
long_lat |
ENVELOPE(-117.120,-117.120,67.434,67.434) ENVELOPE(-118.087,-118.087,66.467,66.467) ENVELOPE(-139.746,-139.746,63.563,63.563) ENVELOPE(-138.254,-138.254,64.583,64.583) ENVELOPE(-135.271,-135.271,63.952,63.952) |
geographic |
Canada Dismal Lakes Hornby Bay Northwest Territories Ogilvie Ogilvie Mountains Wernecke |
geographic_facet |
Canada Dismal Lakes Hornby Bay Northwest Territories Ogilvie Ogilvie Mountains Wernecke |
genre |
Coppermine River Northwest Territories Ogilvie Mountains |
genre_facet |
Coppermine River Northwest Territories Ogilvie Mountains |
op_source |
Canadian Journal of Earth Sciences volume 32, issue 11, page 1991-2008 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e95-152 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
32 |
container_issue |
11 |
container_start_page |
1991 |
op_container_end_page |
2008 |
_version_ |
1809906121129852928 |