Early Paleozoic accretionary orogens along the Western Gondwana margin

Fil: Oriolo, Sebastián. CONICET‐Universidad de Buenos Aires. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires (IGEBA); Argentina.

Bibliographic Details
Authors: Oriolo, Sebastián, Schulz, Bernhard, Geuna, Silvana, González, Pablo Diego, Otamendi, Juan Enrique, Sláma, Sirí, Druguet, Elena, Siegesmund, Siegfred
Format: article
Status:Published version
Publication Date:2020
Country:Argentina
Institution:Universidad Nacional de Río Negro
Repository:RID-UNRN (UNRN)
Language:English
OAI Identifier:oai:rid.unrn.edu.ar:20.500.12049/6617
Online Access:https://www.sciencedirect.com/science/article/pii/S1674987120301493?via%3Dihub
http://rid.unrn.edu.ar/handle/20.500.12049/6617
https://doi.org/10.1016/j.gsf.2020.07.001
Access Level:Open access
Keyword:Ciencias Exactas y Naturales
Retreating Accretionary Orogen
Lower Paleozoic
Crustal Growth
Hf Isotopic Array
Famatinian
Cadomian
id AR_9555a73bcc70c3c19b976ca2822cb435
oai_identifier_str oai:rid.unrn.edu.ar:20.500.12049/6617
network_acronym_str AR
network_name_str Argentina
repository_id_str
dc.title.none.fl_str_mv Early Paleozoic accretionary orogens along the Western Gondwana margin
title Early Paleozoic accretionary orogens along the Western Gondwana margin
spellingShingle Early Paleozoic accretionary orogens along the Western Gondwana margin
Oriolo, Sebastián
Ciencias Exactas y Naturales
Retreating Accretionary Orogen
Lower Paleozoic
Crustal Growth
Hf Isotopic Array
Famatinian
Cadomian
Ciencias Exactas y Naturales
title_short Early Paleozoic accretionary orogens along the Western Gondwana margin
title_full Early Paleozoic accretionary orogens along the Western Gondwana margin
title_fullStr Early Paleozoic accretionary orogens along the Western Gondwana margin
title_full_unstemmed Early Paleozoic accretionary orogens along the Western Gondwana margin
title_sort Early Paleozoic accretionary orogens along the Western Gondwana margin
dc.creator.none.fl_str_mv Oriolo, Sebastián
Schulz, Bernhard
Geuna, Silvana
González, Pablo Diego
Otamendi, Juan Enrique
Sláma, Sirí
Druguet, Elena
Siegesmund, Siegfred
author Oriolo, Sebastián
author_facet Oriolo, Sebastián
Schulz, Bernhard
Geuna, Silvana
González, Pablo Diego
Otamendi, Juan Enrique
Sláma, Sirí
Druguet, Elena
Siegesmund, Siegfred
author_role author
author2 Schulz, Bernhard
Geuna, Silvana
González, Pablo Diego
Otamendi, Juan Enrique
Sláma, Sirí
Druguet, Elena
Siegesmund, Siegfred
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Exactas y Naturales
Retreating Accretionary Orogen
Lower Paleozoic
Crustal Growth
Hf Isotopic Array
Famatinian
Cadomian
Ciencias Exactas y Naturales
topic Ciencias Exactas y Naturales
Retreating Accretionary Orogen
Lower Paleozoic
Crustal Growth
Hf Isotopic Array
Famatinian
Cadomian
Ciencias Exactas y Naturales
description Fil: Oriolo, Sebastián. CONICET‐Universidad de Buenos Aires. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires (IGEBA); Argentina.
publishDate 2020
dc.date.none.fl_str_mv 2020-08-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv Oriolo, S., Schulz, B., Geuna, S., González, P.D., Otamendi, J., Sláma, J., Druguet, E., Siegesmund, S. (2021). Early Paleozoic accretionary orogens along the Western Gondwana margin. Geoscience Frontiers; 12 (1); 109-130.
1674-9871
https://www.sciencedirect.com/science/article/pii/S1674987120301493?via%3Dihub
http://rid.unrn.edu.ar/handle/20.500.12049/6617
https://doi.org/10.1016/j.gsf.2020.07.001
identifier_str_mv Oriolo, S., Schulz, B., Geuna, S., González, P.D., Otamendi, J., Sláma, J., Druguet, E., Siegesmund, S. (2021). Early Paleozoic accretionary orogens along the Western Gondwana margin. Geoscience Frontiers; 12 (1); 109-130.
1674-9871
url https://www.sciencedirect.com/science/article/pii/S1674987120301493?via%3Dihub
http://rid.unrn.edu.ar/handle/20.500.12049/6617
https://doi.org/10.1016/j.gsf.2020.07.001
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://doi.org/10.1016/j.gsf.2020.07.001
12 (1)
Geoscience Frontiers
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/4.0/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/4.0/
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:RID-UNRN (UNRN)
instname:Universidad Nacional de Río Negro
instname_str Universidad Nacional de Río Negro
reponame_str RID-UNRN (UNRN)
collection RID-UNRN (UNRN)
repository.name.fl_str_mv RID-UNRN (UNRN) - Universidad Nacional de Río Negro
repository.mail.fl_str_mv rid@unrn.edu.ar
_version_ 1799196797339435008
spelling Early Paleozoic accretionary orogens along the Western Gondwana marginOriolo, SebastiánSchulz, BernhardGeuna, SilvanaGonzález, Pablo DiegoOtamendi, Juan EnriqueSláma, SiríDruguet, ElenaSiegesmund, SiegfredCiencias Exactas y NaturalesRetreating Accretionary OrogenLower PaleozoicCrustal GrowthHf Isotopic ArrayFamatinianCadomianCiencias Exactas y NaturalesFil: Oriolo, Sebastián. CONICET‐Universidad de Buenos Aires. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires (IGEBA); Argentina.Fil: Schulz, Bernhard. Institute of Mineralogy, Division of Economic Geology and Petrology; Germany.Fil: Geuna, Silvana. CONICET‐Universidad de Buenos Aires. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires (IGEBA); Argentina.Fil: González, Pablo Diego. Universidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geología. Río Negro, Argentina.Fil: Otamendi, Juan Enrique. CONICET, Departamento de Geología, Universidad Nacional de Río Cuarto. Argentina.Fil: Sláma, Sirí. Institute of Geology, The Czech Academy of Sciences. Republica Checa.Fil: Druguet, Elena. Departament de Geologia, Universitat Aut onoma de Barcelona. España.Fil: Siegesmund, Siegfred. Geoscience Centre, Georg-August-Universit€at Gottingen. AlemaniaEarly Paleozoic accretionary orogens dominated the Western Gondwana margin and were characterized by nearly continuous subduction associated with crustal extension and back-arc basin development. The southwestern margin is represented by Famatinian and Pampean basement realms exposed in South America, both related to the protracted Paleozoic evolution of the Terra Australis Orogen, whereas the northwestern margin is mainly recorded in Cadomian domains of Europe and adjacent regions. However, no clear relationships between these regions were so far established. Based on a compilation and reevaluation of geological, paleomagnetic, petrological, geochronological and isotopic evidence, this contribution focuses on crustal-scale tectonic and geodynamic processes occurring in Western Gondwana accretionary orogens, aiming at disentangling their common Early Paleozoic evolution. Data show that accretionary orogens were dominated by high-temperature/low-pressure metamorphism and relatively high geothermal gradients, resulting from the development of extended/hyperextended margins and bulk transtensional deformation. In this sense, retreating-mode accretionary orogens characterized the Early Paleozoic Gondwana margin, though short-lived pulses of compression/transpression also occurred. The existence of retreating subduction zones favoured mantle-derived magmatism and mixing with relatively young (meta)sedimentary sources in a thin continental crust. Crustal reworking of previous forearc sequences due to trenchward arc migration thus took place through assimilation and anatexis in the arc/back-arc regions. Therefore, retreating-mode accretionary orogens were the locus of Early Paleozoic crustal growth in Western Gondwana, intimately associated with major flare-up events, such as those related to the Cadomian and Famatian arcs. Slab roll back, probably resulting from decreasing convergence rates and plate velocities after Gondwana assembly, was a key factor for orogen-scale geodynamic processes. Coupled with synchronous oblique subduction and crustal-scale dextral deformation, slab roll back might trigger toroidal mantle flow, thus accounting for bulk dextral transtension, back-arc extension/transtension and a large-scale anticlockwise rotation of Gondwana mainland.-Elsevier2020-08-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfOriolo, S., Schulz, B., Geuna, S., González, P.D., Otamendi, J., Sláma, J., Druguet, E., Siegesmund, S. (2021). Early Paleozoic accretionary orogens along the Western Gondwana margin. Geoscience Frontiers; 12 (1); 109-130.1674-9871https://www.sciencedirect.com/science/article/pii/S1674987120301493?via%3Dihubhttp://rid.unrn.edu.ar/handle/20.500.12049/6617https://doi.org/10.1016/j.gsf.2020.07.001enghttps://doi.org/10.1016/j.gsf.2020.07.00112 (1)Geoscience Frontiersinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/4.0/reponame:RID-UNRN (UNRN)instname:Universidad Nacional de Río Negro2024-05-10T11:51:04Zoai:rid.unrn.edu.ar:20.500.12049/6617instacron:UNRNInstitucionalhttps://rid.unrn.edu.ar/jspui/Universidad públicaNo correspondehttps://rid.unrn.edu.ar/oai/snrdrid@unrn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:43692024-05-10 11:51:05.02RID-UNRN (UNRN) - Universidad Nacional de Río Negrofalse
score 15.811543

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