Geology and structural setting of the paramillos de uspallata polymetallic veins mendoza, Argentina

The Paramillos de Uspallata ore is composed of 33-polimetalic veins emplaced in the Triassic Uspallata Group, which consist of sedimentary and volcaniclastic rocks interbedded with alkaline basalts and Miocene andesitic rocks. The structure of the area comprise at least three orders of structures de...

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Autores principales: Orellano Ricchetti, A., Winocur, D., Rubinstein, N.
Formato: JOUR
Materias:
Ag mineralization
Kinematics
Paragenesis
Structural control
mineralization
ore deposit
orogeny
paragenesis
structural geology
vein (geology)
Argentina
Mendoza
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00044822_v74_n2_p254_OrellanoRicchetti
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00044822_v74_n2_p254_OrellanoRicchetti
record_format dspace
spelling todo:paper_00044822_v74_n2_p254_OrellanoRicchetti2023-10-03T13:59:19Z Geology and structural setting of the paramillos de uspallata polymetallic veins mendoza, Argentina Orellano Ricchetti, A. Winocur, D. Rubinstein, N. Ag mineralization Kinematics Paragenesis Structural control mineralization ore deposit orogeny paragenesis structural geology vein (geology) Argentina Mendoza The Paramillos de Uspallata ore is composed of 33-polimetalic veins emplaced in the Triassic Uspallata Group, which consist of sedimentary and volcaniclastic rocks interbedded with alkaline basalts and Miocene andesitic rocks. The structure of the area comprise at least three orders of structures developed during Triassic extension of the Cuyo basin and the shortening of Cenozoic Andean orogeny, including high angle reverse faults, thrust and strike-slip faults. The veins were included in the third order, pre­senting NW, WNW and minor WSW trending. We analyzed the Triassic and Neogene structuration and geodynamic context. We carried out structural and petro-mineralogical analysis in eight veins of the deposit in order to get an approximation to their origin. The results show that the veins were emplaced in dilatant fractures with normal and strike slip displacement, which are associated to a first order cortical scale structure. The kinematic analyses shows a tension direction at 060° strike during the mineralization, which could be assigned to Triassic regional extensional regimen. © 2017, Asociacion Geologica Argentina. All rights reserved. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00044822_v74_n2_p254_OrellanoRicchetti
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Ag mineralization
Kinematics
Paragenesis
Structural control
mineralization
ore deposit
orogeny
paragenesis
structural geology
vein (geology)
Argentina
Mendoza
spellingShingle Ag mineralization
Kinematics
Paragenesis
Structural control
mineralization
ore deposit
orogeny
paragenesis
structural geology
vein (geology)
Argentina
Mendoza
Orellano Ricchetti, A.
Winocur, D.
Rubinstein, N.
Geology and structural setting of the paramillos de uspallata polymetallic veins mendoza, Argentina
topic_facet Ag mineralization
Kinematics
Paragenesis
Structural control
mineralization
ore deposit
orogeny
paragenesis
structural geology
vein (geology)
Argentina
Mendoza
description The Paramillos de Uspallata ore is composed of 33-polimetalic veins emplaced in the Triassic Uspallata Group, which consist of sedimentary and volcaniclastic rocks interbedded with alkaline basalts and Miocene andesitic rocks. The structure of the area comprise at least three orders of structures developed during Triassic extension of the Cuyo basin and the shortening of Cenozoic Andean orogeny, including high angle reverse faults, thrust and strike-slip faults. The veins were included in the third order, pre­senting NW, WNW and minor WSW trending. We analyzed the Triassic and Neogene structuration and geodynamic context. We carried out structural and petro-mineralogical analysis in eight veins of the deposit in order to get an approximation to their origin. The results show that the veins were emplaced in dilatant fractures with normal and strike slip displacement, which are associated to a first order cortical scale structure. The kinematic analyses shows a tension direction at 060° strike during the mineralization, which could be assigned to Triassic regional extensional regimen. © 2017, Asociacion Geologica Argentina. All rights reserved.
format JOUR
author Orellano Ricchetti, A.
Winocur, D.
Rubinstein, N.
author_facet Orellano Ricchetti, A.
Winocur, D.
Rubinstein, N.
author_sort Orellano Ricchetti, A.
title Geology and structural setting of the paramillos de uspallata polymetallic veins mendoza, Argentina
title_short Geology and structural setting of the paramillos de uspallata polymetallic veins mendoza, Argentina
title_full Geology and structural setting of the paramillos de uspallata polymetallic veins mendoza, Argentina
title_fullStr Geology and structural setting of the paramillos de uspallata polymetallic veins mendoza, Argentina
title_full_unstemmed Geology and structural setting of the paramillos de uspallata polymetallic veins mendoza, Argentina
title_sort geology and structural setting of the paramillos de uspallata polymetallic veins mendoza, argentina
url http://hdl.handle.net/20.500.12110/paper_00044822_v74_n2_p254_OrellanoRicchetti
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AT winocurd geologyandstructuralsettingoftheparamillosdeuspallatapolymetallicveinsmendozaargentina
AT rubinsteinn geologyandstructuralsettingoftheparamillosdeuspallatapolymetallicveinsmendozaargentina
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