Taltson basement gneissic rocks: UPb and Nd isotopic constraints on the basement to the Paleoproterozoic Taltson magmatic zone, northeastern Alberta
The Taltson magmatic zone is a 300 km long, northerly trending belt of Archean to Paleoproterozoic granitic basement gneiss, amphibolite, supracrustal gneissic rocks, and voluminous Paleoproterozoic magmatic rocks underlying northeastern Alberta and the southwestern portion of the Northwest Territor...
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Online Access: | http://dx.doi.org/10.1139/e00-034 http://www.nrcresearchpress.com/doi/pdf/10.1139/e00-034 |
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crcansciencepubl:10.1139/e00-034 2024-06-23T07:55:43+00:00 Taltson basement gneissic rocks: UPb and Nd isotopic constraints on the basement to the Paleoproterozoic Taltson magmatic zone, northeastern Alberta McNicoll, Vicki J Thériault, Réginald J McDonough, Michael R 2000 http://dx.doi.org/10.1139/e00-034 http://www.nrcresearchpress.com/doi/pdf/10.1139/e00-034 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 37, issue 11, page 1575-1596 ISSN 0008-4077 1480-3313 journal-article 2000 crcansciencepubl https://doi.org/10.1139/e00-034 2024-06-13T04:10:48Z The Taltson magmatic zone is a 300 km long, northerly trending belt of Archean to Paleoproterozoic granitic basement gneiss, amphibolite, supracrustal gneissic rocks, and voluminous Paleoproterozoic magmatic rocks underlying northeastern Alberta and the southwestern portion of the Northwest Territories. Taltson basement gneissic rocks exposed in the southern Taltson magmatic zone in northeastern Alberta are composed of a lithologically diverse suite of banded gneissic rocks, including amphibolitic gneiss, paragneiss, and metaplutonic gneiss. Metaplutonic gneissic rocks are predominant; six new UPb ages range from 2.4 to 2.1 Ga. Taltson basement also contains tectonic slices and layers of Archean gneissic rocks dated at 3.2 Ga, 3.1 Ga, and 2.6 Ga. ε Nd (2.2 Ga) values of 1.6 to 14.3 and T DM ages of 2.593.73 Ga from Taltson basement rocks (27 new analyses) overlap with values for the western Churchill Province and are interpreted to represent Paleoproterozoic recycling of the latter. The similarity in UPb ages and partial overlap in Nd isotopic compositions of the Taltson basement gneissic rocks and the Buffalo Head terrane are consistent with the two domains representing a single Paleoproterozoic crustal entity, which evolved from variable contributions of depleted mantle and preexisting Churchill Province crust. Greater contributions from a depleted mantle component in the Buffalo Head terrane are suggested by the Nd data. Taltson basement gneissic rocks and Buffalo Head terrane may represent earliest Paleoproterozoic magmatism associated with breakup of the western Churchill Province prior to ThelonTaltson orogenesis. Article in Journal/Newspaper Northwest Territories Canadian Science Publishing Buffalo Head ENVELOPE(173.225,173.225,52.908,52.908) Northwest Territories Canadian Journal of Earth Sciences 37 11 1575 1596 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
description |
The Taltson magmatic zone is a 300 km long, northerly trending belt of Archean to Paleoproterozoic granitic basement gneiss, amphibolite, supracrustal gneissic rocks, and voluminous Paleoproterozoic magmatic rocks underlying northeastern Alberta and the southwestern portion of the Northwest Territories. Taltson basement gneissic rocks exposed in the southern Taltson magmatic zone in northeastern Alberta are composed of a lithologically diverse suite of banded gneissic rocks, including amphibolitic gneiss, paragneiss, and metaplutonic gneiss. Metaplutonic gneissic rocks are predominant; six new UPb ages range from 2.4 to 2.1 Ga. Taltson basement also contains tectonic slices and layers of Archean gneissic rocks dated at 3.2 Ga, 3.1 Ga, and 2.6 Ga. ε Nd (2.2 Ga) values of 1.6 to 14.3 and T DM ages of 2.593.73 Ga from Taltson basement rocks (27 new analyses) overlap with values for the western Churchill Province and are interpreted to represent Paleoproterozoic recycling of the latter. The similarity in UPb ages and partial overlap in Nd isotopic compositions of the Taltson basement gneissic rocks and the Buffalo Head terrane are consistent with the two domains representing a single Paleoproterozoic crustal entity, which evolved from variable contributions of depleted mantle and preexisting Churchill Province crust. Greater contributions from a depleted mantle component in the Buffalo Head terrane are suggested by the Nd data. Taltson basement gneissic rocks and Buffalo Head terrane may represent earliest Paleoproterozoic magmatism associated with breakup of the western Churchill Province prior to ThelonTaltson orogenesis. |
format |
Article in Journal/Newspaper |
author |
McNicoll, Vicki J Thériault, Réginald J McDonough, Michael R |
spellingShingle |
McNicoll, Vicki J Thériault, Réginald J McDonough, Michael R Taltson basement gneissic rocks: UPb and Nd isotopic constraints on the basement to the Paleoproterozoic Taltson magmatic zone, northeastern Alberta |
author_facet |
McNicoll, Vicki J Thériault, Réginald J McDonough, Michael R |
author_sort |
McNicoll, Vicki J |
title |
Taltson basement gneissic rocks: UPb and Nd isotopic constraints on the basement to the Paleoproterozoic Taltson magmatic zone, northeastern Alberta |
title_short |
Taltson basement gneissic rocks: UPb and Nd isotopic constraints on the basement to the Paleoproterozoic Taltson magmatic zone, northeastern Alberta |
title_full |
Taltson basement gneissic rocks: UPb and Nd isotopic constraints on the basement to the Paleoproterozoic Taltson magmatic zone, northeastern Alberta |
title_fullStr |
Taltson basement gneissic rocks: UPb and Nd isotopic constraints on the basement to the Paleoproterozoic Taltson magmatic zone, northeastern Alberta |
title_full_unstemmed |
Taltson basement gneissic rocks: UPb and Nd isotopic constraints on the basement to the Paleoproterozoic Taltson magmatic zone, northeastern Alberta |
title_sort |
taltson basement gneissic rocks: upb and nd isotopic constraints on the basement to the paleoproterozoic taltson magmatic zone, northeastern alberta |
publisher |
Canadian Science Publishing |
publishDate |
2000 |
url |
http://dx.doi.org/10.1139/e00-034 http://www.nrcresearchpress.com/doi/pdf/10.1139/e00-034 |
long_lat |
ENVELOPE(173.225,173.225,52.908,52.908) |
geographic |
Buffalo Head Northwest Territories |
geographic_facet |
Buffalo Head Northwest Territories |
genre |
Northwest Territories |
genre_facet |
Northwest Territories |
op_source |
Canadian Journal of Earth Sciences volume 37, issue 11, page 1575-1596 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e00-034 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
37 |
container_issue |
11 |
container_start_page |
1575 |
op_container_end_page |
1596 |
_version_ |
1802648388829708288 |