Age and setting of Permian Slide Mountain terrane ophiolitic ultramafic-mafic complexes in the Yukon: Implications for late Paleozoic-early Mesozoic tectonic models in the northern Canadian Cordillera
The Yukon Tanana (YTT) and Slide Mountain terranes (SMT) of the Cordillera in Canada and Alaska were interpreted in terms of opening and closing of a Late Devonian-Permian Japan Sea-style backarc basin behind a continental arc built upon YTT, which rifted from Laurentia during the Famennian-early Mi...
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ftconicet:oai:ri.conicet.gov.ar:11336/94621 2023-10-09T21:56:30+02:00 Age and setting of Permian Slide Mountain terrane ophiolitic ultramafic-mafic complexes in the Yukon: Implications for late Paleozoic-early Mesozoic tectonic models in the northern Canadian Cordillera van Staal, Cees R. Zagorevski, Alexandre McClelland, William C. Escayola, Monica Patricia Ryan, James J. Parsons, Andrew J. Proenza, Joaquin application/pdf http://hdl.handle.net/11336/94621 eng eng Elsevier Science info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0040195118302518 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.tecto.2018.07.008 http://hdl.handle.net/11336/94621 van Staal, Cees R.; Zagorevski, Alexandre; McClelland, William C.; Escayola, Monica Patricia; Ryan, James J.; et al.; Age and setting of Permian Slide Mountain terrane ophiolitic ultramafic-mafic complexes in the Yukon: Implications for late Paleozoic-early Mesozoic tectonic models in the northern Canadian Cordillera; Elsevier Science; Tectonophysics; 744; 10-2018; 458-483 0040-1951 CONICET Digital CONICET info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ CORDILLERA KLONDIKE OROGENY SLIDE MOUNTAIN TERRANE SUPRASUBDUCTION ZONE OPHIOLITES YUKON TANANA TERRANE https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1016/j.tecto.2018.07.008 2023-09-24T19:11:45Z The Yukon Tanana (YTT) and Slide Mountain terranes (SMT) of the Cordillera in Canada and Alaska were interpreted in terms of opening and closing of a Late Devonian-Permian Japan Sea-style backarc basin behind a continental arc built upon YTT, which rifted from Laurentia during the Famennian-early Mississippian. Formation of Famennian transitional oceanic lithosphere supports rifting, but a combination of existing and new data on the setting and age of SMT ophiolites do not support the Japan Sea model. The studied Clinton Creek and Midnight Dome complexes represent suprasubduction zone ophiolites formed at ca. 265 Ma, consistent with analyses of other SMT ophiolites. Ultramafic rocks dominate most ophiolites. They lack sheeted dikes and contain relatively minor volumes of mafic plutonic and volcanic rocks, suggesting they formed in oceanic core complexes characterised by slow spreading and low magma productivity. The Permian ophiolites formed during or immediately after eclogite formation in YTT, coeval with or immediately preceding emplacement of orogenic peridotites into YTT due to hyperextension. Several tectonic scenarios are discussed. We propose that YTT is a composite terrane comprising a continental block and an oceanic arc-backarc complex with the latter obducted onto the former during the middle Permian-early Triassic Klondike orogeny. Obduction may have come from the west or east, but east-directed obduction is most consistent with geological constraints. Obduction was followed by initiation of west-dipping subduction east of the composite YTT; slab roll back causing extension in the composite upper plate, leading to exhumation of orogenic peridotites. Tectonic relationships show many analogies to the collision between Australia and the New Britain arc, in which collision in the Huon Peninsula of New Guinea is contemporaneous with extension in Australian crust in the adjacent Woodlark basin. Syn-orogenic Permian Klondike calc-alkaline magmatism is attributed to extension in a Woodlark basin-like ... Article in Journal/Newspaper Alaska Yukon CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Yukon Canada Huon ENVELOPE(-57.998,-57.998,-63.367,-63.367) Clinton Creek ENVELOPE(-140.605,-140.605,64.401,64.401) Midnight Dome ENVELOPE(-139.393,-139.393,64.072,64.072) Tectonophysics 744 458 483 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
CORDILLERA KLONDIKE OROGENY SLIDE MOUNTAIN TERRANE SUPRASUBDUCTION ZONE OPHIOLITES YUKON TANANA TERRANE https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
spellingShingle |
CORDILLERA KLONDIKE OROGENY SLIDE MOUNTAIN TERRANE SUPRASUBDUCTION ZONE OPHIOLITES YUKON TANANA TERRANE https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 van Staal, Cees R. Zagorevski, Alexandre McClelland, William C. Escayola, Monica Patricia Ryan, James J. Parsons, Andrew J. Proenza, Joaquin Age and setting of Permian Slide Mountain terrane ophiolitic ultramafic-mafic complexes in the Yukon: Implications for late Paleozoic-early Mesozoic tectonic models in the northern Canadian Cordillera |
topic_facet |
CORDILLERA KLONDIKE OROGENY SLIDE MOUNTAIN TERRANE SUPRASUBDUCTION ZONE OPHIOLITES YUKON TANANA TERRANE https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
description |
The Yukon Tanana (YTT) and Slide Mountain terranes (SMT) of the Cordillera in Canada and Alaska were interpreted in terms of opening and closing of a Late Devonian-Permian Japan Sea-style backarc basin behind a continental arc built upon YTT, which rifted from Laurentia during the Famennian-early Mississippian. Formation of Famennian transitional oceanic lithosphere supports rifting, but a combination of existing and new data on the setting and age of SMT ophiolites do not support the Japan Sea model. The studied Clinton Creek and Midnight Dome complexes represent suprasubduction zone ophiolites formed at ca. 265 Ma, consistent with analyses of other SMT ophiolites. Ultramafic rocks dominate most ophiolites. They lack sheeted dikes and contain relatively minor volumes of mafic plutonic and volcanic rocks, suggesting they formed in oceanic core complexes characterised by slow spreading and low magma productivity. The Permian ophiolites formed during or immediately after eclogite formation in YTT, coeval with or immediately preceding emplacement of orogenic peridotites into YTT due to hyperextension. Several tectonic scenarios are discussed. We propose that YTT is a composite terrane comprising a continental block and an oceanic arc-backarc complex with the latter obducted onto the former during the middle Permian-early Triassic Klondike orogeny. Obduction may have come from the west or east, but east-directed obduction is most consistent with geological constraints. Obduction was followed by initiation of west-dipping subduction east of the composite YTT; slab roll back causing extension in the composite upper plate, leading to exhumation of orogenic peridotites. Tectonic relationships show many analogies to the collision between Australia and the New Britain arc, in which collision in the Huon Peninsula of New Guinea is contemporaneous with extension in Australian crust in the adjacent Woodlark basin. Syn-orogenic Permian Klondike calc-alkaline magmatism is attributed to extension in a Woodlark basin-like ... |
format |
Article in Journal/Newspaper |
author |
van Staal, Cees R. Zagorevski, Alexandre McClelland, William C. Escayola, Monica Patricia Ryan, James J. Parsons, Andrew J. Proenza, Joaquin |
author_facet |
van Staal, Cees R. Zagorevski, Alexandre McClelland, William C. Escayola, Monica Patricia Ryan, James J. Parsons, Andrew J. Proenza, Joaquin |
author_sort |
van Staal, Cees R. |
title |
Age and setting of Permian Slide Mountain terrane ophiolitic ultramafic-mafic complexes in the Yukon: Implications for late Paleozoic-early Mesozoic tectonic models in the northern Canadian Cordillera |
title_short |
Age and setting of Permian Slide Mountain terrane ophiolitic ultramafic-mafic complexes in the Yukon: Implications for late Paleozoic-early Mesozoic tectonic models in the northern Canadian Cordillera |
title_full |
Age and setting of Permian Slide Mountain terrane ophiolitic ultramafic-mafic complexes in the Yukon: Implications for late Paleozoic-early Mesozoic tectonic models in the northern Canadian Cordillera |
title_fullStr |
Age and setting of Permian Slide Mountain terrane ophiolitic ultramafic-mafic complexes in the Yukon: Implications for late Paleozoic-early Mesozoic tectonic models in the northern Canadian Cordillera |
title_full_unstemmed |
Age and setting of Permian Slide Mountain terrane ophiolitic ultramafic-mafic complexes in the Yukon: Implications for late Paleozoic-early Mesozoic tectonic models in the northern Canadian Cordillera |
title_sort |
age and setting of permian slide mountain terrane ophiolitic ultramafic-mafic complexes in the yukon: implications for late paleozoic-early mesozoic tectonic models in the northern canadian cordillera |
publisher |
Elsevier Science |
url |
http://hdl.handle.net/11336/94621 |
long_lat |
ENVELOPE(-57.998,-57.998,-63.367,-63.367) ENVELOPE(-140.605,-140.605,64.401,64.401) ENVELOPE(-139.393,-139.393,64.072,64.072) |
geographic |
Yukon Canada Huon Clinton Creek Midnight Dome |
geographic_facet |
Yukon Canada Huon Clinton Creek Midnight Dome |
genre |
Alaska Yukon |
genre_facet |
Alaska Yukon |
op_relation |
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0040195118302518 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.tecto.2018.07.008 http://hdl.handle.net/11336/94621 van Staal, Cees R.; Zagorevski, Alexandre; McClelland, William C.; Escayola, Monica Patricia; Ryan, James J.; et al.; Age and setting of Permian Slide Mountain terrane ophiolitic ultramafic-mafic complexes in the Yukon: Implications for late Paleozoic-early Mesozoic tectonic models in the northern Canadian Cordillera; Elsevier Science; Tectonophysics; 744; 10-2018; 458-483 0040-1951 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1016/j.tecto.2018.07.008 |
container_title |
Tectonophysics |
container_volume |
744 |
container_start_page |
458 |
op_container_end_page |
483 |
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1779321309705011200 |