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dc.contributor.author
Bustos, Emilce
dc.contributor.author
Simón, Valeria Ester
dc.contributor.author
Arnosio, José Marcelo
dc.contributor.author
Norini, Gianluca
dc.contributor.author
Ducart, Diego Fernando
dc.contributor.author
Suzaño, Nestor Omar
dc.date.available
2021-09-29T18:47:34Z
dc.date.issued
2020-11-02
dc.identifier.citation
Bustos, Emilce; Simón, Valeria Ester; Arnosio, José Marcelo; Norini, Gianluca; Ducart, Diego Fernando; et al.; The hydrothermal system associated with Miocene Chimpa volcano, Central Andes: Implications on potential mineralization; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 105; 102998; 2-11-2020; 1-16
dc.identifier.issn
0895-9811
dc.identifier.uri
http://hdl.handle.net/11336/141931
dc.description.abstract
Miocene volcanism in the central sector of the Puna plateau, in the back–arc region of the Central Andes, has important economic potential, because it is associated with many epithermal ore deposits. Chimpa volcano is one of the largest stratovolcanoes of this region, hosting hydrothermal alteration. In order to map and characterize the hydrothermal alteration, multispectral ASTER satellite imagery, fieldwork, petrography, XRD and Raman spectroscopy have been used. Our study allowed identifying two alteration zones: alunite + illite + jarosite, and alunite + illite. The alunite + illite + jarosite zone occurs mainly in the center of Chimpa volcano, corresponding to the vent area and covering an area of ~0.02 km2 . The alunite + illite zone covers a wider area mainly surrounding the alunite + illite + jarosite region, extending to the east and west and covering an area of ~2.5 km2 . Small altered zones observed away from the vent area have been incorporated in mass-wasting and sector collapse deposits. Therefore, the hydrothermal alteration zone may be actually narrower than the area occupied by altered rocks. The absence of ore minerals indicates a potential barren hydrothermal system. However, the recognized alteration zones, together with the presence of vuggy silica and hypogene alunite, suggest that Chimpa volcano could host a volcanic-hydrothermal leached system related to the emplacement of a volcanic dome complex in the summit area. The hydrothermal system was set up in the final stage or immediately after the dome emplacement phase. Further prospection studies, such as geophysical techniques and drilling, should be focused on finding out if the Chimpa volcano hosts a mineralized system or is a non-economic acidic alteration.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Pergamon-Elsevier Science Ltd
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
High-sulphidation epithermal system
dc.subject
Remote sensing
dc.subject
Central Andes
dc.subject
Alteration
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Chimpa volcano
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Miocene
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Vulcanología
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
The hydrothermal system associated with Miocene Chimpa volcano, Central Andes: Implications on potential mineralization
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-04-28T20:38:14Z
dc.journal.volume
105
dc.journal.number
102998
dc.journal.pagination
1-16
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Bustos, Emilce. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Bio y Geociencias del NOA. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Museo de Ciencias Naturales. Instituto de Bio y Geociencias del NOA; Argentina
dc.description.fil
Fil: Simón, Valeria Ester. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Bio y Geociencias del NOA. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Museo de Ciencias Naturales. Instituto de Bio y Geociencias del NOA; Argentina
dc.description.fil
Fil: Arnosio, José Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Bio y Geociencias del NOA. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Museo de Ciencias Naturales. Instituto de Bio y Geociencias del NOA; Argentina
dc.description.fil
Fil: Norini, Gianluca. Consiglio Nazionale delle Ricerche; Italia
dc.description.fil
Fil: Ducart, Diego Fernando. Universidade Estadual de Campinas; Brasil
dc.description.fil
Fil: Suzaño, Nestor Omar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Bio y Geociencias del NOA. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Museo de Ciencias Naturales. Instituto de Bio y Geociencias del NOA; Argentina
dc.journal.title
Journal of South American Earth Sciences
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S0895981120305411
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jsames.2020.102998
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