Early Devonian age of the Detroit River Group, inferred from Arctic stromatoporoids
The Detroit River Group of southwestern Ontario and the adjacent United States has traditionally been considered mostly or entirely Middle Devonian in age. Detroit River Group faunas are, however, highly endemic and difficult to correlate to the chronostratigraphic standard; widely accepted conodont...
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Online Access: | http://dx.doi.org/10.1139/e93-213 http://www.nrcresearchpress.com/doi/pdf/10.1139/e93-213 |
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crcansciencepubl:10.1139/e93-213 2024-06-23T07:50:03+00:00 Early Devonian age of the Detroit River Group, inferred from Arctic stromatoporoids Prosh, Eric C. Stearn, Colin W. 1993 http://dx.doi.org/10.1139/e93-213 http://www.nrcresearchpress.com/doi/pdf/10.1139/e93-213 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 30, issue 12, page 2465-2474 ISSN 0008-4077 1480-3313 journal-article 1993 crcansciencepubl https://doi.org/10.1139/e93-213 2024-06-06T04:11:19Z The Detroit River Group of southwestern Ontario and the adjacent United States has traditionally been considered mostly or entirely Middle Devonian in age. Detroit River Group faunas are, however, highly endemic and difficult to correlate to the chronostratigraphic standard; widely accepted conodont-based ages are similarly constrained by endemism and rely heavily upon inferential correlations. Recent evidence from the Blue Fiord Formation of southwestern Ellesmere Island suggests an Emsian (late Early Devonian) age for the full Detroit River Group, based upon shared stromatoporoid species. Four Detroit River Group species, Stromatoporella perannulata Galloway and St. Jean, Stictostroma mamilliferum Galloway and St. Jean, Habrostroma proxilaminata (Fagerstrom), and Parallelopora campbelli Galloway and St. Jean, are recognized for the first time in the Arctic. In addition, Blue Fiord Formation (and younger) species of Trupetostroma and Pseudoactinodictyon demonstrate close relationships to Detroit River Group species. Together, the stromatoporoid evidence and the available conodont data imply a serotinus age for the Amherstburg Formation and a serotinus to patulus age for the Lucas Formation. This is the first direct species-level correlation of a Detroit River Group "endemic" to a globally dateable level and the first regional application of stromatoporoid biostratigraphy in North America. Article in Journal/Newspaper Arctic Ellesmere Island Canadian Science Publishing Arctic Blue Fiord ENVELOPE(-87.083,-87.083,77.268,77.268) Detroit ENVELOPE(-60.000,-60.000,-64.167,-64.167) Ellesmere Island Canadian Journal of Earth Sciences 30 12 2465 2474 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
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English |
description |
The Detroit River Group of southwestern Ontario and the adjacent United States has traditionally been considered mostly or entirely Middle Devonian in age. Detroit River Group faunas are, however, highly endemic and difficult to correlate to the chronostratigraphic standard; widely accepted conodont-based ages are similarly constrained by endemism and rely heavily upon inferential correlations. Recent evidence from the Blue Fiord Formation of southwestern Ellesmere Island suggests an Emsian (late Early Devonian) age for the full Detroit River Group, based upon shared stromatoporoid species. Four Detroit River Group species, Stromatoporella perannulata Galloway and St. Jean, Stictostroma mamilliferum Galloway and St. Jean, Habrostroma proxilaminata (Fagerstrom), and Parallelopora campbelli Galloway and St. Jean, are recognized for the first time in the Arctic. In addition, Blue Fiord Formation (and younger) species of Trupetostroma and Pseudoactinodictyon demonstrate close relationships to Detroit River Group species. Together, the stromatoporoid evidence and the available conodont data imply a serotinus age for the Amherstburg Formation and a serotinus to patulus age for the Lucas Formation. This is the first direct species-level correlation of a Detroit River Group "endemic" to a globally dateable level and the first regional application of stromatoporoid biostratigraphy in North America. |
format |
Article in Journal/Newspaper |
author |
Prosh, Eric C. Stearn, Colin W. |
spellingShingle |
Prosh, Eric C. Stearn, Colin W. Early Devonian age of the Detroit River Group, inferred from Arctic stromatoporoids |
author_facet |
Prosh, Eric C. Stearn, Colin W. |
author_sort |
Prosh, Eric C. |
title |
Early Devonian age of the Detroit River Group, inferred from Arctic stromatoporoids |
title_short |
Early Devonian age of the Detroit River Group, inferred from Arctic stromatoporoids |
title_full |
Early Devonian age of the Detroit River Group, inferred from Arctic stromatoporoids |
title_fullStr |
Early Devonian age of the Detroit River Group, inferred from Arctic stromatoporoids |
title_full_unstemmed |
Early Devonian age of the Detroit River Group, inferred from Arctic stromatoporoids |
title_sort |
early devonian age of the detroit river group, inferred from arctic stromatoporoids |
publisher |
Canadian Science Publishing |
publishDate |
1993 |
url |
http://dx.doi.org/10.1139/e93-213 http://www.nrcresearchpress.com/doi/pdf/10.1139/e93-213 |
long_lat |
ENVELOPE(-87.083,-87.083,77.268,77.268) ENVELOPE(-60.000,-60.000,-64.167,-64.167) |
geographic |
Arctic Blue Fiord Detroit Ellesmere Island |
geographic_facet |
Arctic Blue Fiord Detroit Ellesmere Island |
genre |
Arctic Ellesmere Island |
genre_facet |
Arctic Ellesmere Island |
op_source |
Canadian Journal of Earth Sciences volume 30, issue 12, page 2465-2474 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e93-213 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
30 |
container_issue |
12 |
container_start_page |
2465 |
op_container_end_page |
2474 |
_version_ |
1802640816442703872 |