Characteristics of Central II alteration zone, San Rafael Massif, province of Mendoza

The goal of this paper is to present the petrographic study from outcrop samples of the Central II alteration zone. This area is located in the San Rafael Massif, province of Mendoza (34°54'56" S; 68°37'02" O) and is related to hypoabyssal rhyolitic bodies that intrude a volcanic...

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Autores principales: Gargiulo, María Florencia, Rubinstein, Nora Alicia
Publicado: 2007
Materias:
Adularia
Boiling upflow
Hydrothermal quartz
Low-sulfidation epithermal system
Upper section of Choiyoi Group
abyssal zone
epithermal deposit
hydrothermal activity
hydrothermal alteration
hydrothermal system
outcrop
petrography
pseudomorph
recrystallization
rhyolite
Argentina
Mendoza
San Rafael Massif
South America
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v62_n3_p387_Gargiulo
http://hdl.handle.net/20.500.12110/paper_00044822_v62_n3_p387_Gargiulo
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00044822_v62_n3_p387_Gargiulo
record_format dspace
spelling paper:paper_00044822_v62_n3_p387_Gargiulo2023-06-08T14:26:04Z Characteristics of Central II alteration zone, San Rafael Massif, province of Mendoza Gargiulo, María Florencia Rubinstein, Nora Alicia Adularia Boiling upflow Hydrothermal quartz Low-sulfidation epithermal system Upper section of Choiyoi Group abyssal zone epithermal deposit hydrothermal activity hydrothermal alteration hydrothermal system outcrop petrography pseudomorph recrystallization rhyolite Argentina Mendoza San Rafael Massif South America The goal of this paper is to present the petrographic study from outcrop samples of the Central II alteration zone. This area is located in the San Rafael Massif, province of Mendoza (34°54'56" S; 68°37'02" O) and is related to hypoabyssal rhyolitic bodies that intrude a volcanic-volcaniclastic sequence corresponding to the upper section of Choiyoi Group. The alteration zone is represented by pervasive sericitization overprinted by silicic breccias and veins with WNW trend (Az 290° - 300°) and vertical dip. Hydrothermal veins are mainly composed by quartz with primary growth, recrystalization and replacement textures with minor pyrite, chalcopyrite and scarce arsenopyrite. The combination of crustifiform - colloform silica banding, quartz pseudomorphs of bladed calcite and adularia with different morphologies (sub-rhombic, rhombic and pseudo-acicular) is a clear evidence of a low-sulfidation epithermal system with paleozones of upflow boiling. Fil:Gargiulo, M.F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Rubinstein, N. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2007 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v62_n3_p387_Gargiulo http://hdl.handle.net/20.500.12110/paper_00044822_v62_n3_p387_Gargiulo
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Adularia
Boiling upflow
Hydrothermal quartz
Low-sulfidation epithermal system
Upper section of Choiyoi Group
abyssal zone
epithermal deposit
hydrothermal activity
hydrothermal alteration
hydrothermal system
outcrop
petrography
pseudomorph
recrystallization
rhyolite
Argentina
Mendoza
San Rafael Massif
South America
spellingShingle Adularia
Boiling upflow
Hydrothermal quartz
Low-sulfidation epithermal system
Upper section of Choiyoi Group
abyssal zone
epithermal deposit
hydrothermal activity
hydrothermal alteration
hydrothermal system
outcrop
petrography
pseudomorph
recrystallization
rhyolite
Argentina
Mendoza
San Rafael Massif
South America
Gargiulo, María Florencia
Rubinstein, Nora Alicia
Characteristics of Central II alteration zone, San Rafael Massif, province of Mendoza
topic_facet Adularia
Boiling upflow
Hydrothermal quartz
Low-sulfidation epithermal system
Upper section of Choiyoi Group
abyssal zone
epithermal deposit
hydrothermal activity
hydrothermal alteration
hydrothermal system
outcrop
petrography
pseudomorph
recrystallization
rhyolite
Argentina
Mendoza
San Rafael Massif
South America
description The goal of this paper is to present the petrographic study from outcrop samples of the Central II alteration zone. This area is located in the San Rafael Massif, province of Mendoza (34°54'56" S; 68°37'02" O) and is related to hypoabyssal rhyolitic bodies that intrude a volcanic-volcaniclastic sequence corresponding to the upper section of Choiyoi Group. The alteration zone is represented by pervasive sericitization overprinted by silicic breccias and veins with WNW trend (Az 290° - 300°) and vertical dip. Hydrothermal veins are mainly composed by quartz with primary growth, recrystalization and replacement textures with minor pyrite, chalcopyrite and scarce arsenopyrite. The combination of crustifiform - colloform silica banding, quartz pseudomorphs of bladed calcite and adularia with different morphologies (sub-rhombic, rhombic and pseudo-acicular) is a clear evidence of a low-sulfidation epithermal system with paleozones of upflow boiling.
author Gargiulo, María Florencia
Rubinstein, Nora Alicia
author_facet Gargiulo, María Florencia
Rubinstein, Nora Alicia
author_sort Gargiulo, María Florencia
title Characteristics of Central II alteration zone, San Rafael Massif, province of Mendoza
title_short Characteristics of Central II alteration zone, San Rafael Massif, province of Mendoza
title_full Characteristics of Central II alteration zone, San Rafael Massif, province of Mendoza
title_fullStr Characteristics of Central II alteration zone, San Rafael Massif, province of Mendoza
title_full_unstemmed Characteristics of Central II alteration zone, San Rafael Massif, province of Mendoza
title_sort characteristics of central ii alteration zone, san rafael massif, province of mendoza
publishDate 2007
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v62_n3_p387_Gargiulo
http://hdl.handle.net/20.500.12110/paper_00044822_v62_n3_p387_Gargiulo
work_keys_str_mv AT gargiulomariaflorencia characteristicsofcentraliialterationzonesanrafaelmassifprovinceofmendoza
AT rubinsteinnoraalicia characteristicsofcentraliialterationzonesanrafaelmassifprovinceofmendoza
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