Additional K–Ar isotopic dates for the Carmacks Group (Upper Cretaceous), west central Yukon
Three whole-rock K–Ar analyses on andesites from the Indian River area, west central Yukon, yielded dates of 69.0 ± 1.7, 65.2 ± 1.7, and 64.8 ± 1.7 Ma. These confirm earlier dates indicating the Carmacks Group is Late Cretaceous in age. A single date of 51.4 ± 3.9 Ma was obtained from a tuff in the...
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crcansciencepubl:10.1139/e86-171 2023-12-17T10:28:46+01:00 Additional K–Ar isotopic dates for the Carmacks Group (Upper Cretaceous), west central Yukon Lowey, G. W. Sinclair, W. D. Hills, L. V. 1986 http://dx.doi.org/10.1139/e86-171 http://www.nrcresearchpress.com/doi/pdf/10.1139/e86-171 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 23, issue 11, page 1857-1859 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 1986 crcansciencepubl https://doi.org/10.1139/e86-171 2023-11-19T13:38:57Z Three whole-rock K–Ar analyses on andesites from the Indian River area, west central Yukon, yielded dates of 69.0 ± 1.7, 65.2 ± 1.7, and 64.8 ± 1.7 Ma. These confirm earlier dates indicating the Carmacks Group is Late Cretaceous in age. A single date of 51.4 ± 3.9 Ma was obtained from a tuff in the Sixty Mile River area, west central Yukon, suggesting an Eocene age for these deposits. However, this date is considered equivocal because it is anomalous when compared with the other dates from the area. Article in Journal/Newspaper Carmacks Yukon Canadian Science Publishing (via Crossref) Yukon Indian Carmacks ENVELOPE(-136.293,-136.293,62.088,62.088) Sixty Mile River ENVELOPE(-139.767,-139.767,63.562,63.562) Canadian Journal of Earth Sciences 23 11 1857 1859 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences |
spellingShingle |
General Earth and Planetary Sciences Lowey, G. W. Sinclair, W. D. Hills, L. V. Additional K–Ar isotopic dates for the Carmacks Group (Upper Cretaceous), west central Yukon |
topic_facet |
General Earth and Planetary Sciences |
description |
Three whole-rock K–Ar analyses on andesites from the Indian River area, west central Yukon, yielded dates of 69.0 ± 1.7, 65.2 ± 1.7, and 64.8 ± 1.7 Ma. These confirm earlier dates indicating the Carmacks Group is Late Cretaceous in age. A single date of 51.4 ± 3.9 Ma was obtained from a tuff in the Sixty Mile River area, west central Yukon, suggesting an Eocene age for these deposits. However, this date is considered equivocal because it is anomalous when compared with the other dates from the area. |
format |
Article in Journal/Newspaper |
author |
Lowey, G. W. Sinclair, W. D. Hills, L. V. |
author_facet |
Lowey, G. W. Sinclair, W. D. Hills, L. V. |
author_sort |
Lowey, G. W. |
title |
Additional K–Ar isotopic dates for the Carmacks Group (Upper Cretaceous), west central Yukon |
title_short |
Additional K–Ar isotopic dates for the Carmacks Group (Upper Cretaceous), west central Yukon |
title_full |
Additional K–Ar isotopic dates for the Carmacks Group (Upper Cretaceous), west central Yukon |
title_fullStr |
Additional K–Ar isotopic dates for the Carmacks Group (Upper Cretaceous), west central Yukon |
title_full_unstemmed |
Additional K–Ar isotopic dates for the Carmacks Group (Upper Cretaceous), west central Yukon |
title_sort |
additional k–ar isotopic dates for the carmacks group (upper cretaceous), west central yukon |
publisher |
Canadian Science Publishing |
publishDate |
1986 |
url |
http://dx.doi.org/10.1139/e86-171 http://www.nrcresearchpress.com/doi/pdf/10.1139/e86-171 |
long_lat |
ENVELOPE(-136.293,-136.293,62.088,62.088) ENVELOPE(-139.767,-139.767,63.562,63.562) |
geographic |
Yukon Indian Carmacks Sixty Mile River |
geographic_facet |
Yukon Indian Carmacks Sixty Mile River |
genre |
Carmacks Yukon |
genre_facet |
Carmacks Yukon |
op_source |
Canadian Journal of Earth Sciences volume 23, issue 11, page 1857-1859 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e86-171 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
23 |
container_issue |
11 |
container_start_page |
1857 |
op_container_end_page |
1859 |
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1785580955542487040 |