Greisen deposits associated to carboniferous post-orogenic granites with mineralization potencial. Sierra de Fiambaĺ, Catamarca, Argentina

The Fiambaĺ range is located in the central - south part of the province of Catamarca, Western Sierras Pampeanas, Argentina. It is largely conformed by Precambrian metamorphic rocks, a Cambrian granitic intrusive, Ordovician basic and ultrabasic rocks and epizonalCarboniferous granites (Los Ratones,...

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Detalles Bibliográficos
Autores principales: Fogliata, A.S., Rubinstein, N., Ávila, J.C., Báez, M.
Formato: JOUR
Materias:
Argentina
Carboniferous granites
Catamarca
Fiambaĺ
Greisen deposits
Carboniferous
granite
greisenization
hydrothermal system
magmatism
metamorphic rock
mineralization
orogeny
Precambrian
silica
trace element
Sierra de Fiambala
Sierras Pampeanas
South America
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_03660176_v119_n4_p509_Fogliata
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_03660176_v119_n4_p509_Fogliata
record_format dspace
spelling todo:paper_03660176_v119_n4_p509_Fogliata2023-10-03T15:28:06Z Greisen deposits associated to carboniferous post-orogenic granites with mineralization potencial. Sierra de Fiambaĺ, Catamarca, Argentina Fogliata, A.S. Rubinstein, N. Ávila, J.C. Báez, M. Argentina Carboniferous granites Catamarca Fiambaĺ Greisen deposits Carboniferous granite greisenization hydrothermal system magmatism metamorphic rock mineralization orogeny Precambrian silica trace element Argentina Catamarca Sierra de Fiambala Sierras Pampeanas South America The Fiambaĺ range is located in the central - south part of the province of Catamarca, Western Sierras Pampeanas, Argentina. It is largely conformed by Precambrian metamorphic rocks, a Cambrian granitic intrusive, Ordovician basic and ultrabasic rocks and epizonalCarboniferous granites (Los Ratones, El Salto and Ayacucho Granites). The Carboniferous granites are subalkaline, weakly peraluminous,high silica (except for the porphyritic fades of Los Ratones granite) and moderately enriched in K. Contents of trace lements and REE indicate that El Salto and Ayacucho granites and the granular fades of Los Ratones granite have characteristics of evolved and differentiated granite associated with hydrothermal systems. The variations of trace elements, particularly Sn, W, U, Rb, Ba, Zr and Sr suggest that they correspond to granites with mineralization potential. Genetically linked to these granites there are Sn, W, U and minor base metals greisen deposits. The hydrothermal process that yield to these deposits involved two main alteration stages, beginning with alkali meta somatism follow by greissenization. According to the isotopic ages the hydrothermal processes postdate about 1 Ma the magmatic activity. The analyses of the granites and the associated greisen deposits confirm that the post - orogenic carboniferous magmatism is the major metallogenetic control of the ore deposits from the studied area. This metallogenetic control could be a useful! tool in prospecting similar deposits in the rest of the Western Sierras Pampeanas. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03660176_v119_n4_p509_Fogliata
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Argentina
Carboniferous granites
Catamarca
Fiambaĺ
Greisen deposits
Carboniferous
granite
greisenization
hydrothermal system
magmatism
metamorphic rock
mineralization
orogeny
Precambrian
silica
trace element
Argentina
Catamarca
Sierra de Fiambala
Sierras Pampeanas
South America
spellingShingle Argentina
Carboniferous granites
Catamarca
Fiambaĺ
Greisen deposits
Carboniferous
granite
greisenization
hydrothermal system
magmatism
metamorphic rock
mineralization
orogeny
Precambrian
silica
trace element
Argentina
Catamarca
Sierra de Fiambala
Sierras Pampeanas
South America
Fogliata, A.S.
Rubinstein, N.
Ávila, J.C.
Báez, M.
Greisen deposits associated to carboniferous post-orogenic granites with mineralization potencial. Sierra de Fiambaĺ, Catamarca, Argentina
topic_facet Argentina
Carboniferous granites
Catamarca
Fiambaĺ
Greisen deposits
Carboniferous
granite
greisenization
hydrothermal system
magmatism
metamorphic rock
mineralization
orogeny
Precambrian
silica
trace element
Argentina
Catamarca
Sierra de Fiambala
Sierras Pampeanas
South America
description The Fiambaĺ range is located in the central - south part of the province of Catamarca, Western Sierras Pampeanas, Argentina. It is largely conformed by Precambrian metamorphic rocks, a Cambrian granitic intrusive, Ordovician basic and ultrabasic rocks and epizonalCarboniferous granites (Los Ratones, El Salto and Ayacucho Granites). The Carboniferous granites are subalkaline, weakly peraluminous,high silica (except for the porphyritic fades of Los Ratones granite) and moderately enriched in K. Contents of trace lements and REE indicate that El Salto and Ayacucho granites and the granular fades of Los Ratones granite have characteristics of evolved and differentiated granite associated with hydrothermal systems. The variations of trace elements, particularly Sn, W, U, Rb, Ba, Zr and Sr suggest that they correspond to granites with mineralization potential. Genetically linked to these granites there are Sn, W, U and minor base metals greisen deposits. The hydrothermal process that yield to these deposits involved two main alteration stages, beginning with alkali meta somatism follow by greissenization. According to the isotopic ages the hydrothermal processes postdate about 1 Ma the magmatic activity. The analyses of the granites and the associated greisen deposits confirm that the post - orogenic carboniferous magmatism is the major metallogenetic control of the ore deposits from the studied area. This metallogenetic control could be a useful! tool in prospecting similar deposits in the rest of the Western Sierras Pampeanas.
format JOUR
author Fogliata, A.S.
Rubinstein, N.
Ávila, J.C.
Báez, M.
author_facet Fogliata, A.S.
Rubinstein, N.
Ávila, J.C.
Báez, M.
author_sort Fogliata, A.S.
title Greisen deposits associated to carboniferous post-orogenic granites with mineralization potencial. Sierra de Fiambaĺ, Catamarca, Argentina
title_short Greisen deposits associated to carboniferous post-orogenic granites with mineralization potencial. Sierra de Fiambaĺ, Catamarca, Argentina
title_full Greisen deposits associated to carboniferous post-orogenic granites with mineralization potencial. Sierra de Fiambaĺ, Catamarca, Argentina
title_fullStr Greisen deposits associated to carboniferous post-orogenic granites with mineralization potencial. Sierra de Fiambaĺ, Catamarca, Argentina
title_full_unstemmed Greisen deposits associated to carboniferous post-orogenic granites with mineralization potencial. Sierra de Fiambaĺ, Catamarca, Argentina
title_sort greisen deposits associated to carboniferous post-orogenic granites with mineralization potencial. sierra de fiambaĺ, catamarca, argentina
url http://hdl.handle.net/20.500.12110/paper_03660176_v119_n4_p509_Fogliata
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