A Permian Overtoniid Brachiopod in Early Triassic Sediments of Axel Heiberg Island, Canadian Arctic and its Implications on the Permian—Triassic Boundary
The ventral valve of an overtoniid productacean brachiopod generally thought to have been restricted to the late Paleozoic Era is described from the Blind Fiord Formation, Axel Heiberg Island, of Griesbachian (Early Triassic) age. It is not clear whether the specimen was derived from Permian rocks o...
Published in: | Canadian Journal of Earth Sciences |
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Language: | English |
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Canadian Science Publishing
1972
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Online Access: | http://dx.doi.org/10.1139/e72-040 http://www.nrcresearchpress.com/doi/pdf/10.1139/e72-040 |
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crcansciencepubl:10.1139/e72-040 2023-12-17T10:25:57+01:00 A Permian Overtoniid Brachiopod in Early Triassic Sediments of Axel Heiberg Island, Canadian Arctic and its Implications on the Permian—Triassic Boundary Waterhouse, J. B. 1972 http://dx.doi.org/10.1139/e72-040 http://www.nrcresearchpress.com/doi/pdf/10.1139/e72-040 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 9, issue 5, page 486-499 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 1972 crcansciencepubl https://doi.org/10.1139/e72-040 2023-11-19T13:39:12Z The ventral valve of an overtoniid productacean brachiopod generally thought to have been restricted to the late Paleozoic Era is described from the Blind Fiord Formation, Axel Heiberg Island, of Griesbachian (Early Triassic) age. It is not clear whether the specimen was derived from Permian rocks or was really of Griesbachian age. The latter appears likely from the fact that no similar specimens are known from underlying Permian. Genuine occurrences of Permian-type brachiopods in early Triassic rocks are rare. Half of the examples reported, from Armenia, Iran, and West Pakistan, are shown here to be dated erroneously, occurring in middle or late Permian rocks misdated as Triassic, Other examples, such as those from Green-land, are probably reworked because the Triassic beds conformably overlie mid-Permian rocks, and contain similar mid-Permian brachiopods, probably reworked from the underlying deposits. Article in Journal/Newspaper Arctic Axel Heiberg Island Canadian Science Publishing (via Crossref) Arctic Heiberg ENVELOPE(13.964,13.964,66.424,66.424) Axel Heiberg Island ENVELOPE(-91.001,-91.001,79.752,79.752) Blind Fiord ENVELOPE(-86.266,-86.266,78.235,78.235) Canadian Journal of Earth Sciences 9 5 486 499 |
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 Waterhouse, J. B. A Permian Overtoniid Brachiopod in Early Triassic Sediments of Axel Heiberg Island, Canadian Arctic and its Implications on the Permian—Triassic Boundary |
topic_facet |
General Earth and Planetary Sciences |
description |
The ventral valve of an overtoniid productacean brachiopod generally thought to have been restricted to the late Paleozoic Era is described from the Blind Fiord Formation, Axel Heiberg Island, of Griesbachian (Early Triassic) age. It is not clear whether the specimen was derived from Permian rocks or was really of Griesbachian age. The latter appears likely from the fact that no similar specimens are known from underlying Permian. Genuine occurrences of Permian-type brachiopods in early Triassic rocks are rare. Half of the examples reported, from Armenia, Iran, and West Pakistan, are shown here to be dated erroneously, occurring in middle or late Permian rocks misdated as Triassic, Other examples, such as those from Green-land, are probably reworked because the Triassic beds conformably overlie mid-Permian rocks, and contain similar mid-Permian brachiopods, probably reworked from the underlying deposits. |
format |
Article in Journal/Newspaper |
author |
Waterhouse, J. B. |
author_facet |
Waterhouse, J. B. |
author_sort |
Waterhouse, J. B. |
title |
A Permian Overtoniid Brachiopod in Early Triassic Sediments of Axel Heiberg Island, Canadian Arctic and its Implications on the Permian—Triassic Boundary |
title_short |
A Permian Overtoniid Brachiopod in Early Triassic Sediments of Axel Heiberg Island, Canadian Arctic and its Implications on the Permian—Triassic Boundary |
title_full |
A Permian Overtoniid Brachiopod in Early Triassic Sediments of Axel Heiberg Island, Canadian Arctic and its Implications on the Permian—Triassic Boundary |
title_fullStr |
A Permian Overtoniid Brachiopod in Early Triassic Sediments of Axel Heiberg Island, Canadian Arctic and its Implications on the Permian—Triassic Boundary |
title_full_unstemmed |
A Permian Overtoniid Brachiopod in Early Triassic Sediments of Axel Heiberg Island, Canadian Arctic and its Implications on the Permian—Triassic Boundary |
title_sort |
permian overtoniid brachiopod in early triassic sediments of axel heiberg island, canadian arctic and its implications on the permian—triassic boundary |
publisher |
Canadian Science Publishing |
publishDate |
1972 |
url |
http://dx.doi.org/10.1139/e72-040 http://www.nrcresearchpress.com/doi/pdf/10.1139/e72-040 |
long_lat |
ENVELOPE(13.964,13.964,66.424,66.424) ENVELOPE(-91.001,-91.001,79.752,79.752) ENVELOPE(-86.266,-86.266,78.235,78.235) |
geographic |
Arctic Heiberg Axel Heiberg Island Blind Fiord |
geographic_facet |
Arctic Heiberg Axel Heiberg Island Blind Fiord |
genre |
Arctic Axel Heiberg Island |
genre_facet |
Arctic Axel Heiberg Island |
op_source |
Canadian Journal of Earth Sciences volume 9, issue 5, page 486-499 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e72-040 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
9 |
container_issue |
5 |
container_start_page |
486 |
op_container_end_page |
499 |
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1785577632942784512 |