The oldest sequence of skeletal fossils in the Lower Cambrian of southeastern Newfoundland
Sections on the Burin Peninsula in southeastern Newfoundland show a record of continuous sedimentation during the Late Precambrian–Early Cambrian transition. These may be correlated lithologically and biostratigraphically with less complete sequences on the Avalon and Bonavista Peninsulas. Below the...
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Language: | English |
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Canadian Science Publishing
1983
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Online Access: | http://dx.doi.org/10.1139/e83-050 http://www.nrcresearchpress.com/doi/pdf/10.1139/e83-050 |
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crcansciencepubl:10.1139/e83-050 2024-09-15T18:19:50+00:00 The oldest sequence of skeletal fossils in the Lower Cambrian of southeastern Newfoundland Bengtson, Stefan Fletcher, Terence P. 1983 http://dx.doi.org/10.1139/e83-050 http://www.nrcresearchpress.com/doi/pdf/10.1139/e83-050 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 20, issue 4, page 525-536 ISSN 0008-4077 1480-3313 journal-article 1983 crcansciencepubl https://doi.org/10.1139/e83-050 2024-07-25T04:10:06Z Sections on the Burin Peninsula in southeastern Newfoundland show a record of continuous sedimentation during the Late Precambrian–Early Cambrian transition. These may be correlated lithologically and biostratigraphically with less complete sequences on the Avalon and Bonavista Peninsulas. Below the oldest known trilobites in southeastern Newfoundland (of the Callavia Zone) two consecutive assemblages of skeletal fossils are recognizable: an Aldanella attleborensis assemblage and the succeeding Coleoloides typicalis assemblage. The shift between the two assemblages takes place within the Bonavista Formation in the Avalon–Bonavista region and in a similar succession of mudstones near St. Lawrence on the Burin Peninsula. The quartzitic Random Formation appears to have been deposited during a short interval within the time span represented by the A. attleborensis assemblage, and there is no conclusive biostratigraphical evidence of any major diachronism of this unit. The A. attleborensis assemblage contains taxa known from the lower part of the Tommotian Stage on the Siberian Platform. It is interpreted to be of Tommotian age, and the subsequent shift to the C. typicalis assemblage is tentatively correlated with the Tommotian–Atdabanian boundary as recognized in Siberia. Article in Journal/Newspaper Newfoundland Siberia Canadian Science Publishing Canadian Journal of Earth Sciences 20 4 525 536 |
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Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
description |
Sections on the Burin Peninsula in southeastern Newfoundland show a record of continuous sedimentation during the Late Precambrian–Early Cambrian transition. These may be correlated lithologically and biostratigraphically with less complete sequences on the Avalon and Bonavista Peninsulas. Below the oldest known trilobites in southeastern Newfoundland (of the Callavia Zone) two consecutive assemblages of skeletal fossils are recognizable: an Aldanella attleborensis assemblage and the succeeding Coleoloides typicalis assemblage. The shift between the two assemblages takes place within the Bonavista Formation in the Avalon–Bonavista region and in a similar succession of mudstones near St. Lawrence on the Burin Peninsula. The quartzitic Random Formation appears to have been deposited during a short interval within the time span represented by the A. attleborensis assemblage, and there is no conclusive biostratigraphical evidence of any major diachronism of this unit. The A. attleborensis assemblage contains taxa known from the lower part of the Tommotian Stage on the Siberian Platform. It is interpreted to be of Tommotian age, and the subsequent shift to the C. typicalis assemblage is tentatively correlated with the Tommotian–Atdabanian boundary as recognized in Siberia. |
format |
Article in Journal/Newspaper |
author |
Bengtson, Stefan Fletcher, Terence P. |
spellingShingle |
Bengtson, Stefan Fletcher, Terence P. The oldest sequence of skeletal fossils in the Lower Cambrian of southeastern Newfoundland |
author_facet |
Bengtson, Stefan Fletcher, Terence P. |
author_sort |
Bengtson, Stefan |
title |
The oldest sequence of skeletal fossils in the Lower Cambrian of southeastern Newfoundland |
title_short |
The oldest sequence of skeletal fossils in the Lower Cambrian of southeastern Newfoundland |
title_full |
The oldest sequence of skeletal fossils in the Lower Cambrian of southeastern Newfoundland |
title_fullStr |
The oldest sequence of skeletal fossils in the Lower Cambrian of southeastern Newfoundland |
title_full_unstemmed |
The oldest sequence of skeletal fossils in the Lower Cambrian of southeastern Newfoundland |
title_sort |
oldest sequence of skeletal fossils in the lower cambrian of southeastern newfoundland |
publisher |
Canadian Science Publishing |
publishDate |
1983 |
url |
http://dx.doi.org/10.1139/e83-050 http://www.nrcresearchpress.com/doi/pdf/10.1139/e83-050 |
genre |
Newfoundland Siberia |
genre_facet |
Newfoundland Siberia |
op_source |
Canadian Journal of Earth Sciences volume 20, issue 4, page 525-536 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e83-050 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
20 |
container_issue |
4 |
container_start_page |
525 |
op_container_end_page |
536 |
_version_ |
1810458182135316480 |