Using Detrital-Zircon Geochronology and (U-Th)/He Thermochronology to Re-evaluate the Triassic-Jurassic Tectonic Setting of Northern Laurentia, Canadian Arctic
New geochronological and field data were examined from Triassic-Jurassic strata in the Sverdrup Basin, Arctic Canada. Detailed analysis of detrital-zircon data identified a pronounced near-syndepositional age-fraction in Triassic strata, which significantly is absent in Jurassic strata of the Sverdr...
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Université d'Ottawa / University of Ottawa
2016
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Online Access: | https://dx.doi.org/10.20381/ruor-284 http://www.ruor.uottawa.ca/handle/10393/35326 |
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ftdatacite:10.20381/ruor-284 2023-05-15T14:36:00+02:00 Using Detrital-Zircon Geochronology and (U-Th)/He Thermochronology to Re-evaluate the Triassic-Jurassic Tectonic Setting of Northern Laurentia, Canadian Arctic Midwinter, Derrick 2016 https://dx.doi.org/10.20381/ruor-284 http://www.ruor.uottawa.ca/handle/10393/35326 en eng Université d'Ottawa / University of Ottawa Sverdrup Basin Detrital-Zircon Geochronology Thermochronology Arctic Geology Text Thesis article-journal ScholarlyArticle 2016 ftdatacite https://doi.org/10.20381/ruor-284 2021-11-05T12:55:41Z New geochronological and field data were examined from Triassic-Jurassic strata in the Sverdrup Basin, Arctic Canada. Detailed analysis of detrital-zircon data identified a pronounced near-syndepositional age-fraction in Triassic strata, which significantly is absent in Jurassic strata of the Sverdrup Basin suggesting a protracted history of magmatism and sediment dispersal from areas north of the basin during the Triassic. However, as a result of rifting, during the Early Jurassic, the northern source region became disconnected from the Sverdrup Basin, and opened the precursor basin (Amerasia Basin) to the Arctic Ocean. Jurassic rifting of the Amerasia Basin would have had associated rift-flank uplift. Time-temperature models produced from zircon (U-Th)/He thermochronological data elucidate the unknown thermal history between the regional Devonian-Cretaceous unconformity in the southwestern Canadian Arctic suggesting ~4 km of addition deposition on Banks Island and ≤1 km of deposition towards the craton interior. Thesis Arctic Arctic Ocean Banks Island sverdrup basin DataCite Metadata Store (German National Library of Science and Technology) Amerasia Basin ENVELOPE(-170.000,-170.000,80.000,80.000) Arctic Arctic Ocean Canada |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Sverdrup Basin Detrital-Zircon Geochronology Thermochronology Arctic Geology |
spellingShingle |
Sverdrup Basin Detrital-Zircon Geochronology Thermochronology Arctic Geology Midwinter, Derrick Using Detrital-Zircon Geochronology and (U-Th)/He Thermochronology to Re-evaluate the Triassic-Jurassic Tectonic Setting of Northern Laurentia, Canadian Arctic |
topic_facet |
Sverdrup Basin Detrital-Zircon Geochronology Thermochronology Arctic Geology |
description |
New geochronological and field data were examined from Triassic-Jurassic strata in the Sverdrup Basin, Arctic Canada. Detailed analysis of detrital-zircon data identified a pronounced near-syndepositional age-fraction in Triassic strata, which significantly is absent in Jurassic strata of the Sverdrup Basin suggesting a protracted history of magmatism and sediment dispersal from areas north of the basin during the Triassic. However, as a result of rifting, during the Early Jurassic, the northern source region became disconnected from the Sverdrup Basin, and opened the precursor basin (Amerasia Basin) to the Arctic Ocean. Jurassic rifting of the Amerasia Basin would have had associated rift-flank uplift. Time-temperature models produced from zircon (U-Th)/He thermochronological data elucidate the unknown thermal history between the regional Devonian-Cretaceous unconformity in the southwestern Canadian Arctic suggesting ~4 km of addition deposition on Banks Island and ≤1 km of deposition towards the craton interior. |
format |
Thesis |
author |
Midwinter, Derrick |
author_facet |
Midwinter, Derrick |
author_sort |
Midwinter, Derrick |
title |
Using Detrital-Zircon Geochronology and (U-Th)/He Thermochronology to Re-evaluate the Triassic-Jurassic Tectonic Setting of Northern Laurentia, Canadian Arctic |
title_short |
Using Detrital-Zircon Geochronology and (U-Th)/He Thermochronology to Re-evaluate the Triassic-Jurassic Tectonic Setting of Northern Laurentia, Canadian Arctic |
title_full |
Using Detrital-Zircon Geochronology and (U-Th)/He Thermochronology to Re-evaluate the Triassic-Jurassic Tectonic Setting of Northern Laurentia, Canadian Arctic |
title_fullStr |
Using Detrital-Zircon Geochronology and (U-Th)/He Thermochronology to Re-evaluate the Triassic-Jurassic Tectonic Setting of Northern Laurentia, Canadian Arctic |
title_full_unstemmed |
Using Detrital-Zircon Geochronology and (U-Th)/He Thermochronology to Re-evaluate the Triassic-Jurassic Tectonic Setting of Northern Laurentia, Canadian Arctic |
title_sort |
using detrital-zircon geochronology and (u-th)/he thermochronology to re-evaluate the triassic-jurassic tectonic setting of northern laurentia, canadian arctic |
publisher |
Université d'Ottawa / University of Ottawa |
publishDate |
2016 |
url |
https://dx.doi.org/10.20381/ruor-284 http://www.ruor.uottawa.ca/handle/10393/35326 |
long_lat |
ENVELOPE(-170.000,-170.000,80.000,80.000) |
geographic |
Amerasia Basin Arctic Arctic Ocean Canada |
geographic_facet |
Amerasia Basin Arctic Arctic Ocean Canada |
genre |
Arctic Arctic Ocean Banks Island sverdrup basin |
genre_facet |
Arctic Arctic Ocean Banks Island sverdrup basin |
op_doi |
https://doi.org/10.20381/ruor-284 |
_version_ |
1766308714246045696 |