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dc.contributor.author
Maffini, María Natalia
dc.contributor.author
Wemmer, Klaus
dc.contributor.author
Radice, Stefania
dc.contributor.author
Oriolo, Sebastián
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D'eramo, Fernando Javier
dc.contributor.author
Coniglio, Jorge Enrique
dc.contributor.author
Demartis, Manuel
dc.contributor.author
Pinotti, Lucio Pedro
dc.date.available
2018-11-30T14:04:24Z
dc.date.issued
2017-10
dc.identifier.citation
Maffini, María Natalia; Wemmer, Klaus; Radice, Stefania; Oriolo, Sebastián; D'eramo, Fernando Javier; et al.; Polymetallic (Pb-Zn-Cu-Ag ± Au) vein-type deposits in brittle-ductile transtensional shear zones, Eastern Sierras Pampeanas (Argentina): Age constraints and significance for the Late Paleozoic tectonic evolution and metallogenesis; Elsevier Science; Ore Geology Reviews; 89; 10-2017; 668-682
dc.identifier.issn
0169-1368
dc.identifier.uri
http://hdl.handle.net/11336/65551
dc.description.abstract
This paper discusses new structural, kinematic and geochronological data from polymetallic (Pb-Zn-Cu-Ag ± Au) vein-type deposits hosted in the metamorphic basement of the southern Sierras de Córdoba. A Carboniferous age was established for the hydrothermal event between ∼329 and 315 Ma (Late Mississippian-Early Pennsylvanian) by the K/Ar fine-fraction dating method of sericitic alteration related to metallic ore deposition in the Las Guindas and Oro districts. The obtained ages postdate the spatially associated Devonian magmatism and overlap the A-type Early Carboniferous magmatism defined for the Eastern Sierras Pampeanas. The presence of non-exhumed granitic bodies at shallow depths, possibly related to mineralization, is supported by available geophysical and field evidence. The strain fabric and 3-D kinematic analyses constitute first kinematic data for the Carboniferous basement of the Southern Sierras Pampeanas demonstrating that mineralization was controlled by NNW- and ENE-trending brittle-ductile transtensional shear zones that overprint the earlier high-strain deformation fabrics of the basement. Transtensional deformation has accommodated large amounts of strike-slip movements and subordinated extensional components. The calculated kinematic axes indicate a coherent kinematic pattern of the mineralized systems in the two studied districts, with a maximum extension direction oriented NNE- to NE and maximum shortening direction oriented WNW- to NW. This deformation regime, active during mineralization, point to a non-compressive setting at the Late Mississippian-Early Pennsylvanian boundary. In line with other regional evidence, we propose a distinctive Carboniferous deformational phase in the Eastern Sierras Pampeanas, dominated by transtension. This period would have occurred after the transition with the Devonian compressional/transpressional orogenic regime.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Carboniferous Evolution
dc.subject
Hydrothermal Veins
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K/Ar Fine-Fraction Dating
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Shear Zone Reactivation
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Southern Sierras de CÓRdoba
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Meteorología y Ciencias Atmosféricas
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Polymetallic (Pb-Zn-Cu-Ag ± Au) vein-type deposits in brittle-ductile transtensional shear zones, Eastern Sierras Pampeanas (Argentina): Age constraints and significance for the Late Paleozoic tectonic evolution and metallogenesis
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-10-23T21:34:10Z
dc.journal.volume
89
dc.journal.pagination
668-682
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Maffini, María Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Geología; Argentina
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Fil: Wemmer, Klaus. Universität Göttingen; Alemania
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Fil: Radice, Stefania. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Geología; Argentina
dc.description.fil
Fil: Oriolo, Sebastián. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina
dc.description.fil
Fil: D'eramo, Fernando Javier. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Geología; Argentina
dc.description.fil
Fil: Coniglio, Jorge Enrique. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Geología; Argentina
dc.description.fil
Fil: Demartis, Manuel. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Geología; Argentina
dc.description.fil
Fil: Pinotti, Lucio Pedro. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Geología; Argentina
dc.journal.title
Ore Geology Reviews
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://linkinghub.elsevier.com/retrieve/pii/S0169136817302366
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.oregeorev.2017.07.003


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