Biostratigraphical and ecostratigraphical significance of Tremadoc (Ordovician) graptolite faunas from the Misty Creek Embayment and Selwyn Basin in Yukon and Northwest Territories
Graptolite zones of early and late Tremadoc ages are described from the Elmer Creek Formation in the Selwyn Basin and from the Duo Lake Formation in the Misty Creek Embayment. In ascending order, these are: Staurograptus dichotomus, Anisograptus matanensis, Adelograptus cf. A. tenellus and Aorograpt...
Published in: | Canadian Journal of Earth Sciences |
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Online Access: | http://dx.doi.org/10.1139/e04-007 http://www.nrcresearchpress.com/doi/pdf/10.1139/e04-007 |
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crcansciencepubl:10.1139/e04-007 2023-12-17T10:47:39+01:00 Biostratigraphical and ecostratigraphical significance of Tremadoc (Ordovician) graptolite faunas from the Misty Creek Embayment and Selwyn Basin in Yukon and Northwest Territories Jackson, D E Norford, B S 2004 http://dx.doi.org/10.1139/e04-007 http://www.nrcresearchpress.com/doi/pdf/10.1139/e04-007 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 41, issue 3, page 331-348 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 2004 crcansciencepubl https://doi.org/10.1139/e04-007 2023-11-19T13:39:30Z Graptolite zones of early and late Tremadoc ages are described from the Elmer Creek Formation in the Selwyn Basin and from the Duo Lake Formation in the Misty Creek Embayment. In ascending order, these are: Staurograptus dichotomus, Anisograptus matanensis, Adelograptus cf. A. tenellus and Aorograptus victoriae Biozones. The uppermost zone embraces the Adelograptus antiquus Biozone, Kiaerograptus? pritchardi Biozone, and the Paradelograptus kinnegraptoides Biozone in the Richardson Trough. Twenty five species are recorded and fourteen species are described, including the first record of the Rhabdinopora fauna in the early Tremadoc of northwest Canada and Kiaerograptus magnus Williams and Stevens and Paratemnograptus isolatus Williams and Stevens in the late Tremadoc. When modifications to Cooper's (1999) ecostratigraphic model are made based on data from Yukon and Northwest Territories, the upper slope biotope and lower slope ocean-floor biotope become so similar that there is little basis for recognising both biotopes. Article in Journal/Newspaper Northwest Territories Yukon Canadian Science Publishing (via Crossref) Yukon Northwest Territories Canada Selwyn ENVELOPE(-138.287,-138.287,62.799,62.799) Misty Creek ENVELOPE(-131.187,-131.187,64.116,64.116) Duo Lake ENVELOPE(-132.102,-132.102,64.497,64.497) Elmer Creek ENVELOPE(-130.627,-130.627,63.528,63.528) Canadian Journal of Earth Sciences 41 3 331 348 |
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 Jackson, D E Norford, B S Biostratigraphical and ecostratigraphical significance of Tremadoc (Ordovician) graptolite faunas from the Misty Creek Embayment and Selwyn Basin in Yukon and Northwest Territories |
topic_facet |
General Earth and Planetary Sciences |
description |
Graptolite zones of early and late Tremadoc ages are described from the Elmer Creek Formation in the Selwyn Basin and from the Duo Lake Formation in the Misty Creek Embayment. In ascending order, these are: Staurograptus dichotomus, Anisograptus matanensis, Adelograptus cf. A. tenellus and Aorograptus victoriae Biozones. The uppermost zone embraces the Adelograptus antiquus Biozone, Kiaerograptus? pritchardi Biozone, and the Paradelograptus kinnegraptoides Biozone in the Richardson Trough. Twenty five species are recorded and fourteen species are described, including the first record of the Rhabdinopora fauna in the early Tremadoc of northwest Canada and Kiaerograptus magnus Williams and Stevens and Paratemnograptus isolatus Williams and Stevens in the late Tremadoc. When modifications to Cooper's (1999) ecostratigraphic model are made based on data from Yukon and Northwest Territories, the upper slope biotope and lower slope ocean-floor biotope become so similar that there is little basis for recognising both biotopes. |
format |
Article in Journal/Newspaper |
author |
Jackson, D E Norford, B S |
author_facet |
Jackson, D E Norford, B S |
author_sort |
Jackson, D E |
title |
Biostratigraphical and ecostratigraphical significance of Tremadoc (Ordovician) graptolite faunas from the Misty Creek Embayment and Selwyn Basin in Yukon and Northwest Territories |
title_short |
Biostratigraphical and ecostratigraphical significance of Tremadoc (Ordovician) graptolite faunas from the Misty Creek Embayment and Selwyn Basin in Yukon and Northwest Territories |
title_full |
Biostratigraphical and ecostratigraphical significance of Tremadoc (Ordovician) graptolite faunas from the Misty Creek Embayment and Selwyn Basin in Yukon and Northwest Territories |
title_fullStr |
Biostratigraphical and ecostratigraphical significance of Tremadoc (Ordovician) graptolite faunas from the Misty Creek Embayment and Selwyn Basin in Yukon and Northwest Territories |
title_full_unstemmed |
Biostratigraphical and ecostratigraphical significance of Tremadoc (Ordovician) graptolite faunas from the Misty Creek Embayment and Selwyn Basin in Yukon and Northwest Territories |
title_sort |
biostratigraphical and ecostratigraphical significance of tremadoc (ordovician) graptolite faunas from the misty creek embayment and selwyn basin in yukon and northwest territories |
publisher |
Canadian Science Publishing |
publishDate |
2004 |
url |
http://dx.doi.org/10.1139/e04-007 http://www.nrcresearchpress.com/doi/pdf/10.1139/e04-007 |
long_lat |
ENVELOPE(-138.287,-138.287,62.799,62.799) ENVELOPE(-131.187,-131.187,64.116,64.116) ENVELOPE(-132.102,-132.102,64.497,64.497) ENVELOPE(-130.627,-130.627,63.528,63.528) |
geographic |
Yukon Northwest Territories Canada Selwyn Misty Creek Duo Lake Elmer Creek |
geographic_facet |
Yukon Northwest Territories Canada Selwyn Misty Creek Duo Lake Elmer Creek |
genre |
Northwest Territories Yukon |
genre_facet |
Northwest Territories Yukon |
op_source |
Canadian Journal of Earth Sciences volume 41, issue 3, page 331-348 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e04-007 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
41 |
container_issue |
3 |
container_start_page |
331 |
op_container_end_page |
348 |
_version_ |
1785571582629904384 |