Lower Triassic bryozoan beds from Ellesmere Island, High Arctic, Canada
In the Sverdrup Basin (Canadian Arctic), the Lower Triassic Blind Fiord Formation, comprising siltstone and shale, overlies various Middle to Late Permian (post-Wordian) sedimentary units. This formation is subdivided into three members: the Confederation Point, Smith Creek and Svartfjeld members of...
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ftunivlausanne:oai:serval.unil.ch:BIB_CA37765D4380 2024-02-11T10:00:41+01:00 Lower Triassic bryozoan beds from Ellesmere Island, High Arctic, Canada Baud, A. Nakrem, H.A. Beauchamp, B. Beatty, T.W. Embry, A.F. Henderson, C.M. 2008 https://serval.unil.ch/notice/serval:BIB_CA37765D4380 https://doi.org/10.1111/j.1751-8369.2008.00071.x eng eng info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1751-8369.2008.00071.x https://serval.unil.ch/notice/serval:BIB_CA37765D4380 doi:10.1111/j.1751-8369.2008.00071.x Polar Research, vol. 27, pp. 428 - 440 Arctic Arcticopora bryozoans Canada Spitsbergen Triassic info:eu-repo/semantics/article article 2008 ftunivlausanne https://doi.org/10.1111/j.1751-8369.2008.00071.x 2024-01-22T00:59:09Z In the Sverdrup Basin (Canadian Arctic), the Lower Triassic Blind Fiord Formation, comprising siltstone and shale, overlies various Middle to Late Permian (post-Wordian) sedimentary units. This formation is subdivided into three members: the Confederation Point, Smith Creek and Svartfjeld members of, respectively, Griesbachian-Dienerian, Smithian-Spathian and Spathian ages. Lower Triassic bryozoan beds are known from many sections of Ellesmere Island, but have never been studied in detail. During the Early Triassic biotic recovery interval, immediately following the Permian/Triassic extinction event, only one new bryozoan genus evolved in the Boreal region: Arcticopora. The first lower Triassic bryozoan bed appears in the upper part of the Confederation Point Member, and is dated as late Dienerian. Succeeding bryozoan levels occur in the upper Smith Creek Member, and are late Smithian-early Spathian in age. Bryozoan beds occupy a similar stratigraphic position in Spitsbergen. There, they occur scattered in silt to coarse sandstone beds, but also in bryozoan-dominated packstone beds resembling the packstone units in the uppermost part of the Confederation Point Member of Ellesmere Island. Previously, bryozoan-rich beds of Triassic age have not been reported, and the present work fills an important time gap in the bryozoan carbonate database Article in Journal/Newspaper Arctic Ellesmere Island Polar Research sverdrup basin Spitsbergen Université de Lausanne (UNIL): Serval - Serveur académique lausannois Arctic Blind Fiord ENVELOPE(-86.266,-86.266,78.235,78.235) Canada Confederation Point ENVELOPE(-87.300,-87.300,80.624,80.624) Ellesmere Island Polar Research 27 3 428 440 |
institution |
Open Polar |
collection |
Université de Lausanne (UNIL): Serval - Serveur académique lausannois |
op_collection_id |
ftunivlausanne |
language |
English |
topic |
Arctic Arcticopora bryozoans Canada Spitsbergen Triassic |
spellingShingle |
Arctic Arcticopora bryozoans Canada Spitsbergen Triassic Baud, A. Nakrem, H.A. Beauchamp, B. Beatty, T.W. Embry, A.F. Henderson, C.M. Lower Triassic bryozoan beds from Ellesmere Island, High Arctic, Canada |
topic_facet |
Arctic Arcticopora bryozoans Canada Spitsbergen Triassic |
description |
In the Sverdrup Basin (Canadian Arctic), the Lower Triassic Blind Fiord Formation, comprising siltstone and shale, overlies various Middle to Late Permian (post-Wordian) sedimentary units. This formation is subdivided into three members: the Confederation Point, Smith Creek and Svartfjeld members of, respectively, Griesbachian-Dienerian, Smithian-Spathian and Spathian ages. Lower Triassic bryozoan beds are known from many sections of Ellesmere Island, but have never been studied in detail. During the Early Triassic biotic recovery interval, immediately following the Permian/Triassic extinction event, only one new bryozoan genus evolved in the Boreal region: Arcticopora. The first lower Triassic bryozoan bed appears in the upper part of the Confederation Point Member, and is dated as late Dienerian. Succeeding bryozoan levels occur in the upper Smith Creek Member, and are late Smithian-early Spathian in age. Bryozoan beds occupy a similar stratigraphic position in Spitsbergen. There, they occur scattered in silt to coarse sandstone beds, but also in bryozoan-dominated packstone beds resembling the packstone units in the uppermost part of the Confederation Point Member of Ellesmere Island. Previously, bryozoan-rich beds of Triassic age have not been reported, and the present work fills an important time gap in the bryozoan carbonate database |
format |
Article in Journal/Newspaper |
author |
Baud, A. Nakrem, H.A. Beauchamp, B. Beatty, T.W. Embry, A.F. Henderson, C.M. |
author_facet |
Baud, A. Nakrem, H.A. Beauchamp, B. Beatty, T.W. Embry, A.F. Henderson, C.M. |
author_sort |
Baud, A. |
title |
Lower Triassic bryozoan beds from Ellesmere Island, High Arctic, Canada |
title_short |
Lower Triassic bryozoan beds from Ellesmere Island, High Arctic, Canada |
title_full |
Lower Triassic bryozoan beds from Ellesmere Island, High Arctic, Canada |
title_fullStr |
Lower Triassic bryozoan beds from Ellesmere Island, High Arctic, Canada |
title_full_unstemmed |
Lower Triassic bryozoan beds from Ellesmere Island, High Arctic, Canada |
title_sort |
lower triassic bryozoan beds from ellesmere island, high arctic, canada |
publishDate |
2008 |
url |
https://serval.unil.ch/notice/serval:BIB_CA37765D4380 https://doi.org/10.1111/j.1751-8369.2008.00071.x |
long_lat |
ENVELOPE(-86.266,-86.266,78.235,78.235) ENVELOPE(-87.300,-87.300,80.624,80.624) |
geographic |
Arctic Blind Fiord Canada Confederation Point Ellesmere Island |
geographic_facet |
Arctic Blind Fiord Canada Confederation Point Ellesmere Island |
genre |
Arctic Ellesmere Island Polar Research sverdrup basin Spitsbergen |
genre_facet |
Arctic Ellesmere Island Polar Research sverdrup basin Spitsbergen |
op_source |
Polar Research, vol. 27, pp. 428 - 440 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1751-8369.2008.00071.x https://serval.unil.ch/notice/serval:BIB_CA37765D4380 doi:10.1111/j.1751-8369.2008.00071.x |
op_doi |
https://doi.org/10.1111/j.1751-8369.2008.00071.x |
container_title |
Polar Research |
container_volume |
27 |
container_issue |
3 |
container_start_page |
428 |
op_container_end_page |
440 |
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1790596399005433856 |