Detrital zircon geochronology of the Taku terrane, southeast Alaska
UPb geochronologic studies have been conducted on 60 detrital zircon grains from Permian(?) and Triassic metasandstones of the Taku terrane in central southeast Alaska. The resulting ages are mainly in the range 349387 Ma, with five additional grains that yield probable ages ranging from ~906 to ~...
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2002
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Online Access: | http://dx.doi.org/10.1139/e02-002 http://www.nrcresearchpress.com/doi/pdf/10.1139/e02-002 |
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crcansciencepubl:10.1139/e02-002 2024-09-15T18:41:25+00:00 Detrital zircon geochronology of the Taku terrane, southeast Alaska Gehrels, George E 2002 http://dx.doi.org/10.1139/e02-002 http://www.nrcresearchpress.com/doi/pdf/10.1139/e02-002 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 39, issue 6, page 921-931 ISSN 0008-4077 1480-3313 journal-article 2002 crcansciencepubl https://doi.org/10.1139/e02-002 2024-07-25T04:10:03Z UPb geochronologic studies have been conducted on 60 detrital zircon grains from Permian(?) and Triassic metasandstones of the Taku terrane in central southeast Alaska. The resulting ages are mainly in the range 349387 Ma, with five additional grains that yield probable ages ranging from ~906 to ~2643 Ma. These ages are similar to the ages of detrital zircons in Carboniferous and older rocks of the YukonTanana terrane, which lies directly east of the Taku terrane. In contrast, these ages are different from the ages of detrital zircon grains in the Alexander terrane to the west. The data are accordingly consistent with models in which the Taku terrane is a western component of the Stikine and YukonTanana terranes, and that this crustal fragment is separated by a fundamental tectonic boundary from rocks of the Alexander and Wrangellia terranes to the west. Article in Journal/Newspaper Alaska Yukon Canadian Science Publishing Canadian Journal of Earth Sciences 39 6 921 931 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
UPb geochronologic studies have been conducted on 60 detrital zircon grains from Permian(?) and Triassic metasandstones of the Taku terrane in central southeast Alaska. The resulting ages are mainly in the range 349387 Ma, with five additional grains that yield probable ages ranging from ~906 to ~2643 Ma. These ages are similar to the ages of detrital zircons in Carboniferous and older rocks of the YukonTanana terrane, which lies directly east of the Taku terrane. In contrast, these ages are different from the ages of detrital zircon grains in the Alexander terrane to the west. The data are accordingly consistent with models in which the Taku terrane is a western component of the Stikine and YukonTanana terranes, and that this crustal fragment is separated by a fundamental tectonic boundary from rocks of the Alexander and Wrangellia terranes to the west. |
format |
Article in Journal/Newspaper |
author |
Gehrels, George E |
spellingShingle |
Gehrels, George E Detrital zircon geochronology of the Taku terrane, southeast Alaska |
author_facet |
Gehrels, George E |
author_sort |
Gehrels, George E |
title |
Detrital zircon geochronology of the Taku terrane, southeast Alaska |
title_short |
Detrital zircon geochronology of the Taku terrane, southeast Alaska |
title_full |
Detrital zircon geochronology of the Taku terrane, southeast Alaska |
title_fullStr |
Detrital zircon geochronology of the Taku terrane, southeast Alaska |
title_full_unstemmed |
Detrital zircon geochronology of the Taku terrane, southeast Alaska |
title_sort |
detrital zircon geochronology of the taku terrane, southeast alaska |
publisher |
Canadian Science Publishing |
publishDate |
2002 |
url |
http://dx.doi.org/10.1139/e02-002 http://www.nrcresearchpress.com/doi/pdf/10.1139/e02-002 |
genre |
Alaska Yukon |
genre_facet |
Alaska Yukon |
op_source |
Canadian Journal of Earth Sciences volume 39, issue 6, page 921-931 ISSN 0008-4077 1480-3313 |
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http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e02-002 |
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Canadian Journal of Earth Sciences |
container_volume |
39 |
container_issue |
6 |
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921 |
op_container_end_page |
931 |
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1810485824804880384 |