Late Middle Ordovician olistostrome formation and magmatism along the Red Indian Line, the Laurentian arc Gondwanan arc boundary, at Sops Head, Newfoundland
The Sops Head Complex of Badger Bay, central Newfoundland, includes olistostromal and tectonized mélanges and marks the Red Indian Line, the boundary between the peri-Gondwanan Exploits and peri-Laurentian Notre Dame subzones of the oceanic Dunnage Zone. Basalts in the olistostromal mélange preserve...
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crcansciencepubl:10.1139/e02-084 2023-12-17T10:43:37+01:00 Late Middle Ordovician olistostrome formation and magmatism along the Red Indian Line, the Laurentian arc Gondwanan arc boundary, at Sops Head, Newfoundland McConnell, Brian J O'Brien, Brian H Nowlan, Godfrey S 2002 http://dx.doi.org/10.1139/e02-084 http://www.nrcresearchpress.com/doi/pdf/10.1139/e02-084 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 39, issue 11, page 1625-1633 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 2002 crcansciencepubl https://doi.org/10.1139/e02-084 2023-11-19T13:38:24Z The Sops Head Complex of Badger Bay, central Newfoundland, includes olistostromal and tectonized mélanges and marks the Red Indian Line, the boundary between the peri-Gondwanan Exploits and peri-Laurentian Notre Dame subzones of the oceanic Dunnage Zone. Basalts in the olistostromal mélange preserve peperitic contacts with mudstone and limestone within slumped sedimentary units, demonstrating that magmatism was coeval with olistostrome formation. Conodonts from the limestones date these events as late Darriwilian ("Llandeilian," Middle Ordovician) in age. The conodont fauna consists entirely of North Atlantic Faunal Realm elements, suggesting a peri-Gondwanan or mid-Iapetan provenance for limestone of the Sops Head Complex. Basalt geochemistry suggests magmatism in a mature volcanic-arc to back-arc setting. The Sops Head Complex shows similarities in age, provenance, and stratigraphic setting to the Dunnage Mélange, suggesting that the two units are correlative. Article in Journal/Newspaper Newfoundland North Atlantic Canadian Science Publishing (via Crossref) Indian Canadian Journal of Earth Sciences 39 11 1625 1633 |
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Open Polar |
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Canadian Science Publishing (via Crossref) |
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crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences |
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General Earth and Planetary Sciences McConnell, Brian J O'Brien, Brian H Nowlan, Godfrey S Late Middle Ordovician olistostrome formation and magmatism along the Red Indian Line, the Laurentian arc Gondwanan arc boundary, at Sops Head, Newfoundland |
topic_facet |
General Earth and Planetary Sciences |
description |
The Sops Head Complex of Badger Bay, central Newfoundland, includes olistostromal and tectonized mélanges and marks the Red Indian Line, the boundary between the peri-Gondwanan Exploits and peri-Laurentian Notre Dame subzones of the oceanic Dunnage Zone. Basalts in the olistostromal mélange preserve peperitic contacts with mudstone and limestone within slumped sedimentary units, demonstrating that magmatism was coeval with olistostrome formation. Conodonts from the limestones date these events as late Darriwilian ("Llandeilian," Middle Ordovician) in age. The conodont fauna consists entirely of North Atlantic Faunal Realm elements, suggesting a peri-Gondwanan or mid-Iapetan provenance for limestone of the Sops Head Complex. Basalt geochemistry suggests magmatism in a mature volcanic-arc to back-arc setting. The Sops Head Complex shows similarities in age, provenance, and stratigraphic setting to the Dunnage Mélange, suggesting that the two units are correlative. |
format |
Article in Journal/Newspaper |
author |
McConnell, Brian J O'Brien, Brian H Nowlan, Godfrey S |
author_facet |
McConnell, Brian J O'Brien, Brian H Nowlan, Godfrey S |
author_sort |
McConnell, Brian J |
title |
Late Middle Ordovician olistostrome formation and magmatism along the Red Indian Line, the Laurentian arc Gondwanan arc boundary, at Sops Head, Newfoundland |
title_short |
Late Middle Ordovician olistostrome formation and magmatism along the Red Indian Line, the Laurentian arc Gondwanan arc boundary, at Sops Head, Newfoundland |
title_full |
Late Middle Ordovician olistostrome formation and magmatism along the Red Indian Line, the Laurentian arc Gondwanan arc boundary, at Sops Head, Newfoundland |
title_fullStr |
Late Middle Ordovician olistostrome formation and magmatism along the Red Indian Line, the Laurentian arc Gondwanan arc boundary, at Sops Head, Newfoundland |
title_full_unstemmed |
Late Middle Ordovician olistostrome formation and magmatism along the Red Indian Line, the Laurentian arc Gondwanan arc boundary, at Sops Head, Newfoundland |
title_sort |
late middle ordovician olistostrome formation and magmatism along the red indian line, the laurentian arc gondwanan arc boundary, at sops head, newfoundland |
publisher |
Canadian Science Publishing |
publishDate |
2002 |
url |
http://dx.doi.org/10.1139/e02-084 http://www.nrcresearchpress.com/doi/pdf/10.1139/e02-084 |
geographic |
Indian |
geographic_facet |
Indian |
genre |
Newfoundland North Atlantic |
genre_facet |
Newfoundland North Atlantic |
op_source |
Canadian Journal of Earth Sciences volume 39, issue 11, page 1625-1633 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e02-084 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
39 |
container_issue |
11 |
container_start_page |
1625 |
op_container_end_page |
1633 |
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1785558756064493568 |