Regional geology and tectonic framework of the Southern Indian domain, Trans-Hudson orogen, Manitoba
The collaborative federal–provincial Southern Indian Lake project in north-central Manitoba covered an area of more than 3500 km 2 of the Trans-Hudson orogen. Regional-scale geological mapping, sampling, and lithogeochemical, isotopic, and geochronological studies resulted in the identification of d...
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crcansciencepubl:10.1139/cjes-2020-0142 2024-06-23T07:52:07+00:00 Regional geology and tectonic framework of the Southern Indian domain, Trans-Hudson orogen, Manitoba Martins, T. Rayner, N. Corrigan, D. Kremer, P. 2022 http://dx.doi.org/10.1139/cjes-2020-0142 https://cdnsciencepub.com/doi/full-xml/10.1139/cjes-2020-0142 https://cdnsciencepub.com/doi/pdf/10.1139/cjes-2020-0142 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 59, issue 6, page 371-388 ISSN 0008-4077 1480-3313 journal-article 2022 crcansciencepubl https://doi.org/10.1139/cjes-2020-0142 2024-05-24T13:05:50Z The collaborative federal–provincial Southern Indian Lake project in north-central Manitoba covered an area of more than 3500 km 2 of the Trans-Hudson orogen. Regional-scale geological mapping, sampling, and lithogeochemical, isotopic, and geochronological studies resulted in the identification of distinct assemblages of supracrustal rocks and varied episodes of plutonism. A granodiorite gneiss dated at ca. 2520 Ma is interpreted to represent the basement of the Southern Indian domain and is considered a separate crustal domain, named the Partridge Breast block. The Churchill River assemblage is composed of juvenile pillow basalt with intervening clastic sedimentary rocks, possibly a reflection of plume magmatism related to initial rifting of the Hearne craton margin. The Pukatawakan Bay assemblage consists mainly of massive to pillowed, juvenile metabasaltic rocks and associated basinal metasedimentary rocks. The Partridge Breast Lake assemblage is dominated by continental-arc volcanic and volcaniclastic rocks associated with basinal metasedimentary rocks. The Strawberry Island assemblage, consisting of arenite and polymictic conglomerate, is interpreted to have been deposited in a foreland-basin basin or intra-orogen pull-apart basin environment. The Whyme Bay assemblage is characterized by fluvial-alluvial orogenic sediments and is temporally linked to the Sickle Group rocks in the Lynn Lake greenstone belt. Granitoid rocks, dominantly monzogranite and granodiorite, range in age from ca. 1890 to 1830 Ma and occur throughout the Southern Indian domain, and intermediate and mafic intrusions of similar ages are also present. In this paper, we integrate these new data into a tectonic framework for the Southern Indian domain of the Trans-Hudson orogen in Manitoba. Article in Journal/Newspaper Churchill Churchill River Canadian Science Publishing Hudson Indian Partridge Breast Lake ENVELOPE(-97.929,-97.929,57.354,57.354) Sickle ENVELOPE(-66.783,-66.783,-68.867,-68.867) Southern Indian Lake ENVELOPE(-98.500,-98.500,57.167,57.167) Whyme Bay ENVELOPE(-98.704,-98.704,57.035,57.035) Canadian Journal of Earth Sciences |
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Open Polar |
collection |
Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
The collaborative federal–provincial Southern Indian Lake project in north-central Manitoba covered an area of more than 3500 km 2 of the Trans-Hudson orogen. Regional-scale geological mapping, sampling, and lithogeochemical, isotopic, and geochronological studies resulted in the identification of distinct assemblages of supracrustal rocks and varied episodes of plutonism. A granodiorite gneiss dated at ca. 2520 Ma is interpreted to represent the basement of the Southern Indian domain and is considered a separate crustal domain, named the Partridge Breast block. The Churchill River assemblage is composed of juvenile pillow basalt with intervening clastic sedimentary rocks, possibly a reflection of plume magmatism related to initial rifting of the Hearne craton margin. The Pukatawakan Bay assemblage consists mainly of massive to pillowed, juvenile metabasaltic rocks and associated basinal metasedimentary rocks. The Partridge Breast Lake assemblage is dominated by continental-arc volcanic and volcaniclastic rocks associated with basinal metasedimentary rocks. The Strawberry Island assemblage, consisting of arenite and polymictic conglomerate, is interpreted to have been deposited in a foreland-basin basin or intra-orogen pull-apart basin environment. The Whyme Bay assemblage is characterized by fluvial-alluvial orogenic sediments and is temporally linked to the Sickle Group rocks in the Lynn Lake greenstone belt. Granitoid rocks, dominantly monzogranite and granodiorite, range in age from ca. 1890 to 1830 Ma and occur throughout the Southern Indian domain, and intermediate and mafic intrusions of similar ages are also present. In this paper, we integrate these new data into a tectonic framework for the Southern Indian domain of the Trans-Hudson orogen in Manitoba. |
format |
Article in Journal/Newspaper |
author |
Martins, T. Rayner, N. Corrigan, D. Kremer, P. |
spellingShingle |
Martins, T. Rayner, N. Corrigan, D. Kremer, P. Regional geology and tectonic framework of the Southern Indian domain, Trans-Hudson orogen, Manitoba |
author_facet |
Martins, T. Rayner, N. Corrigan, D. Kremer, P. |
author_sort |
Martins, T. |
title |
Regional geology and tectonic framework of the Southern Indian domain, Trans-Hudson orogen, Manitoba |
title_short |
Regional geology and tectonic framework of the Southern Indian domain, Trans-Hudson orogen, Manitoba |
title_full |
Regional geology and tectonic framework of the Southern Indian domain, Trans-Hudson orogen, Manitoba |
title_fullStr |
Regional geology and tectonic framework of the Southern Indian domain, Trans-Hudson orogen, Manitoba |
title_full_unstemmed |
Regional geology and tectonic framework of the Southern Indian domain, Trans-Hudson orogen, Manitoba |
title_sort |
regional geology and tectonic framework of the southern indian domain, trans-hudson orogen, manitoba |
publisher |
Canadian Science Publishing |
publishDate |
2022 |
url |
http://dx.doi.org/10.1139/cjes-2020-0142 https://cdnsciencepub.com/doi/full-xml/10.1139/cjes-2020-0142 https://cdnsciencepub.com/doi/pdf/10.1139/cjes-2020-0142 |
long_lat |
ENVELOPE(-97.929,-97.929,57.354,57.354) ENVELOPE(-66.783,-66.783,-68.867,-68.867) ENVELOPE(-98.500,-98.500,57.167,57.167) ENVELOPE(-98.704,-98.704,57.035,57.035) |
geographic |
Hudson Indian Partridge Breast Lake Sickle Southern Indian Lake Whyme Bay |
geographic_facet |
Hudson Indian Partridge Breast Lake Sickle Southern Indian Lake Whyme Bay |
genre |
Churchill Churchill River |
genre_facet |
Churchill Churchill River |
op_source |
Canadian Journal of Earth Sciences volume 59, issue 6, page 371-388 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjes-2020-0142 |
container_title |
Canadian Journal of Earth Sciences |
_version_ |
1802643334514081792 |