Review of crustal architecture and evolution in the Ungava Peninsula — Baffin Island area: connection to the Lithoprobe ECSOOT transect
Within the Trans-Hudson Orogen in northern Quebec and southern Baffin Island, parautochthonous Archean basement and Paleoproterozoic cover, as well as allochthonous (accreted) Paleoproterozoic units, are exposed in a series of antiformal culminations and complementary synclinoria. The parautochthono...
Published in: | Canadian Journal of Earth Sciences |
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Language: | English |
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Online Access: | http://dx.doi.org/10.1139/e02-022 http://www.nrcresearchpress.com/doi/pdf/10.1139/e02-022 |
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crcansciencepubl:10.1139/e02-022 2024-09-15T17:57:03+00:00 Review of crustal architecture and evolution in the Ungava Peninsula — Baffin Island area: connection to the Lithoprobe ECSOOT transect St-Onge, M R Scott, D J Wodicka, N 2002 http://dx.doi.org/10.1139/e02-022 http://www.nrcresearchpress.com/doi/pdf/10.1139/e02-022 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 39, issue 5, page 589-610 ISSN 0008-4077 1480-3313 journal-article 2002 crcansciencepubl https://doi.org/10.1139/e02-022 2024-08-01T04:10:00Z Within the Trans-Hudson Orogen in northern Quebec and southern Baffin Island, parautochthonous Archean basement and Paleoproterozoic cover, as well as allochthonous (accreted) Paleoproterozoic units, are exposed in a series of antiformal culminations and complementary synclinoria. The parautochthonous rocks of the Superior Province margin and two assemblages of accreted Paleoproterozoic units (Ungava and Meta Incognita crustal terranes) define a basic tripartite crustal architecture which is characterized by polyphase deformation and metamorphic histories. Early structures and mineral assemblages are recognized in all three crustal components and shown to be temporally distinct. The earlier structures and assemblages are overprinted by younger elements and mineral assemblages that are related to at least three regional contraction episodes and one thermal event that are common to all crustal components of the orogen. Close correlation of regional aeromagnetic data in northern Quebec and southern Baffin Island with the three crustal components offers a first-order approximation of the distribution of basement lithological units across Hudson Strait. Continuation of the aeromagnetic domains beneath Ungava Bay to northeastern Quebec and northern Labrador allows for the southward extrapolation of the tripartite Trans-Hudson Orogen crustal architecture into the Lithoprobe Eastern Canadian Shield OnshoreOffshore Transect area. Article in Journal/Newspaper Baffin Island Baffin Hudson Strait Ungava Bay Ungava peninsula Canadian Science Publishing Canadian Journal of Earth Sciences 39 5 589 610 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
Within the Trans-Hudson Orogen in northern Quebec and southern Baffin Island, parautochthonous Archean basement and Paleoproterozoic cover, as well as allochthonous (accreted) Paleoproterozoic units, are exposed in a series of antiformal culminations and complementary synclinoria. The parautochthonous rocks of the Superior Province margin and two assemblages of accreted Paleoproterozoic units (Ungava and Meta Incognita crustal terranes) define a basic tripartite crustal architecture which is characterized by polyphase deformation and metamorphic histories. Early structures and mineral assemblages are recognized in all three crustal components and shown to be temporally distinct. The earlier structures and assemblages are overprinted by younger elements and mineral assemblages that are related to at least three regional contraction episodes and one thermal event that are common to all crustal components of the orogen. Close correlation of regional aeromagnetic data in northern Quebec and southern Baffin Island with the three crustal components offers a first-order approximation of the distribution of basement lithological units across Hudson Strait. Continuation of the aeromagnetic domains beneath Ungava Bay to northeastern Quebec and northern Labrador allows for the southward extrapolation of the tripartite Trans-Hudson Orogen crustal architecture into the Lithoprobe Eastern Canadian Shield OnshoreOffshore Transect area. |
format |
Article in Journal/Newspaper |
author |
St-Onge, M R Scott, D J Wodicka, N |
spellingShingle |
St-Onge, M R Scott, D J Wodicka, N Review of crustal architecture and evolution in the Ungava Peninsula — Baffin Island area: connection to the Lithoprobe ECSOOT transect |
author_facet |
St-Onge, M R Scott, D J Wodicka, N |
author_sort |
St-Onge, M R |
title |
Review of crustal architecture and evolution in the Ungava Peninsula — Baffin Island area: connection to the Lithoprobe ECSOOT transect |
title_short |
Review of crustal architecture and evolution in the Ungava Peninsula — Baffin Island area: connection to the Lithoprobe ECSOOT transect |
title_full |
Review of crustal architecture and evolution in the Ungava Peninsula — Baffin Island area: connection to the Lithoprobe ECSOOT transect |
title_fullStr |
Review of crustal architecture and evolution in the Ungava Peninsula — Baffin Island area: connection to the Lithoprobe ECSOOT transect |
title_full_unstemmed |
Review of crustal architecture and evolution in the Ungava Peninsula — Baffin Island area: connection to the Lithoprobe ECSOOT transect |
title_sort |
review of crustal architecture and evolution in the ungava peninsula — baffin island area: connection to the lithoprobe ecsoot transect |
publisher |
Canadian Science Publishing |
publishDate |
2002 |
url |
http://dx.doi.org/10.1139/e02-022 http://www.nrcresearchpress.com/doi/pdf/10.1139/e02-022 |
genre |
Baffin Island Baffin Hudson Strait Ungava Bay Ungava peninsula |
genre_facet |
Baffin Island Baffin Hudson Strait Ungava Bay Ungava peninsula |
op_source |
Canadian Journal of Earth Sciences volume 39, issue 5, page 589-610 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e02-022 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
39 |
container_issue |
5 |
container_start_page |
589 |
op_container_end_page |
610 |
_version_ |
1810433244485648384 |