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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paperaa:paper_00044822_v62_n3_p387_Gargiulo2023-06-12T16:40:12Z Characteristics of Central II alteration zone, San Rafael Massif, province of Mendoza Rev. Asoc. Geol. Argent. 2007;62(3):387-395 Gargiulo, M.F. Rubinstein, N. Carpio, F. Salvarredi, J. 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 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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) |
language |
Inglés |
orig_language_str_mv |
eng |
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, M.F. Rubinstein, N. Carpio, F. Salvarredi, J. 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. |
format |
Artículo Artículo publishedVersion |
author |
Gargiulo, M.F. Rubinstein, N. Carpio, F. Salvarredi, J. |
author_facet |
Gargiulo, M.F. Rubinstein, N. Carpio, F. Salvarredi, J. |
author_sort |
Gargiulo, M.F. |
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 |
http://hdl.handle.net/20.500.12110/paper_00044822_v62_n3_p387_Gargiulo |
work_keys_str_mv |
AT gargiulomf characteristicsofcentraliialterationzonesanrafaelmassifprovinceofmendoza AT rubinsteinn characteristicsofcentraliialterationzonesanrafaelmassifprovinceofmendoza AT carpiof characteristicsofcentraliialterationzonesanrafaelmassifprovinceofmendoza AT salvarredij characteristicsofcentraliialterationzonesanrafaelmassifprovinceofmendoza |
_version_ |
1769810062135525376 |