Contiguous rather than discrete Paleozoic histories for the Avalon and Meguma terranes based on detrital zircon data

Upper Ordovician–Lower Devonian strata of the Meguma terrane in the Canadian Appalachians contain zircon populations, including an important Mesoproterozoic zircon population (1.0–1.4 Ga), similar to those in coeval strata of Avalonia, and strongly suggest contiguous rather than discrete histories f...

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Detalles Bibliográficos
Autores: Brendan Murphy, J., Fernández Suárez, Javier, Duncan Keppie, James, Jeffries, Teresa E.
Tipo de recurso: artículo
Fecha de publicación:2004
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/52740
Acceso en línea:https://hdl.handle.net/20.500.14352/52740
Access Level:acceso abierto
Palabra clave:551.24
Meguma terrane
Avalonia
Appalachian orogen
Acadian orogeny
Geodinámica
Petrología
2507 Geofísica
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oai_identifier_str oai:docta.ucm.es:20.500.14352/52740
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spelling Contiguous rather than discrete Paleozoic histories for the Avalon and Meguma terranes based on detrital zircon dataBrendan Murphy, J.Fernández Suárez, JavierDuncan Keppie, JamesJeffries, Teresa E.551.24Meguma terraneAvaloniaAppalachian orogenAcadian orogenyGeodinámicaPetrología2507 GeofísicaUpper Ordovician–Lower Devonian strata of the Meguma terrane in the Canadian Appalachians contain zircon populations, including an important Mesoproterozoic zircon population (1.0–1.4 Ga), similar to those in coeval strata of Avalonia, and strongly suggest contiguous rather than discrete histories for these terranes throughout the Paleozoic. That these terranes were juxtaposed throughout the early Paleozoic is indicated by the absence of a Cambrian–Ordovician accretionary event, the lack of intervening suture-zone ophiolitic units, and the similarity of Avalonian and Meguma basement Nd isotope signatures in early Paleozoic igneous suites. As Avalonia had accreted to Laurentia-Baltica by the Early Silurian, these data suggest that the Meguma terrane, like Avalonia, resided along the same (northern) margin of the Rheic Ocean at that time. These conclusions have implications for reconstructions of the northern Gondwanan margin in the early Paleozoic and imply that the Silurian–Devonian Acadian orogeny in Maritime Canada occurred in an Andean-type setting and was not related to collision of the Meguma terrane with the Laurentian margin.Geological Society of AmericaUniversidad Complutense de Madrid20042004-01-0120042004-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/52740reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/527402026-06-02T12:44:21Z
dc.title.none.fl_str_mv Contiguous rather than discrete Paleozoic histories for the Avalon and Meguma terranes based on detrital zircon data
title Contiguous rather than discrete Paleozoic histories for the Avalon and Meguma terranes based on detrital zircon data
spellingShingle Contiguous rather than discrete Paleozoic histories for the Avalon and Meguma terranes based on detrital zircon data
Brendan Murphy, J.
551.24
Meguma terrane
Avalonia
Appalachian orogen
Acadian orogeny
Geodinámica
Petrología
2507 Geofísica
title_short Contiguous rather than discrete Paleozoic histories for the Avalon and Meguma terranes based on detrital zircon data
title_full Contiguous rather than discrete Paleozoic histories for the Avalon and Meguma terranes based on detrital zircon data
title_fullStr Contiguous rather than discrete Paleozoic histories for the Avalon and Meguma terranes based on detrital zircon data
title_full_unstemmed Contiguous rather than discrete Paleozoic histories for the Avalon and Meguma terranes based on detrital zircon data
title_sort Contiguous rather than discrete Paleozoic histories for the Avalon and Meguma terranes based on detrital zircon data
dc.creator.none.fl_str_mv Brendan Murphy, J.
Fernández Suárez, Javier
Duncan Keppie, James
Jeffries, Teresa E.
author Brendan Murphy, J.
author_facet Brendan Murphy, J.
Fernández Suárez, Javier
Duncan Keppie, James
Jeffries, Teresa E.
author_role author
author2 Fernández Suárez, Javier
Duncan Keppie, James
Jeffries, Teresa E.
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 551.24
Meguma terrane
Avalonia
Appalachian orogen
Acadian orogeny
Geodinámica
Petrología
2507 Geofísica
topic 551.24
Meguma terrane
Avalonia
Appalachian orogen
Acadian orogeny
Geodinámica
Petrología
2507 Geofísica
description Upper Ordovician–Lower Devonian strata of the Meguma terrane in the Canadian Appalachians contain zircon populations, including an important Mesoproterozoic zircon population (1.0–1.4 Ga), similar to those in coeval strata of Avalonia, and strongly suggest contiguous rather than discrete histories for these terranes throughout the Paleozoic. That these terranes were juxtaposed throughout the early Paleozoic is indicated by the absence of a Cambrian–Ordovician accretionary event, the lack of intervening suture-zone ophiolitic units, and the similarity of Avalonian and Meguma basement Nd isotope signatures in early Paleozoic igneous suites. As Avalonia had accreted to Laurentia-Baltica by the Early Silurian, these data suggest that the Meguma terrane, like Avalonia, resided along the same (northern) margin of the Rheic Ocean at that time. These conclusions have implications for reconstructions of the northern Gondwanan margin in the early Paleozoic and imply that the Silurian–Devonian Acadian orogeny in Maritime Canada occurred in an Andean-type setting and was not related to collision of the Meguma terrane with the Laurentian margin.
publishDate 2004
dc.date.none.fl_str_mv 2004
2004-01-01
2004
2004-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/52740
url https://hdl.handle.net/20.500.14352/52740
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Geological Society of America
publisher.none.fl_str_mv Geological Society of America
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,198674

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