Artículo
Zeolites in acid vitreous rocks, southern Mendoza, Argentina
Locati, Francisco
; Cravero, Maria Fernanda
; Marfil, Silvina Andrea; Lescano, Leticia; Madsen, Lenís
; Maiza, Pedro Jose
Fecha de publicación:
03/2020
Editorial:
Pergamon-Elsevier Science Ltd
Revista:
Journal of South American Earth Sciences
ISSN:
0895-9811
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
A mordenite-rich deposit located in the south of the province of Mendoza (Argentina) was studied. The host rock in this area has not been previously described and corresponds to rhyolitic lavas of high-K calc-alkaline series. Petrographic, mineralogical and geochemical analyses of fresh and altered rocks are shown, and a proposal for the alteration process and the stratigraphic position of the protolith is presented. The main mordenite-rich sectors developed in zones of autobreccias of high permeability, with minor clinoptilolite, smectites, secondary K-feldspars, opal-CT, and colloform silica. The proportion of relict glass vs. alteration minerals is variable and mainly depends on the texture (permeability) of the host rock. The studied rhyolites overlie the Upper Cretaceous sediments of the Neuquén Group and are covered by Tertiary basalts of the Molle Eruptive Cycle and Quaternary sediments. Geochemically, they present similarities with rhyolitic rocks of Cordón del Burrero Volcanic Complex of Lower to Middle Miocene age.
Palabras clave:
BEIDELLITE-MONTMORILLONITE
,
CLINOPTILOLITE
,
MORDENITE
,
RHYOLITE
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(CETMIC)
Articulos de CENTRO TECNOL.DE REC.MINERALES Y CERAMICA (I)
Articulos de CENTRO TECNOL.DE REC.MINERALES Y CERAMICA (I)
Articulos(CICTERRA)
Articulos de CENTRO DE INVEST.EN CS.DE LA TIERRA
Articulos de CENTRO DE INVEST.EN CS.DE LA TIERRA
Citación
Locati, Francisco; Cravero, Maria Fernanda; Marfil, Silvina Andrea; Lescano, Leticia; Madsen, Lenís; et al.; Zeolites in acid vitreous rocks, southern Mendoza, Argentina; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 98; 3-2020; 1-44; 102440
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