Upper Paleozoic peperites at the northern margin of the Mendoza River, eastern border of the Cordillera Frontal

An outcrop of Tambillos Formation of the Choiyoi Group is described. It is composed mostly by peperites, being recognized the types amoeboid, globular, blocky and of mixed morphologies. The lavas that gave origin to these rocks had intermediate or acid compositions with scarce oligoclase and biotite...

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Publicado: 2006
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Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v61_n3_p449_Koukharsky
http://hdl.handle.net/20.500.12110/paper_00044822_v61_n3_p449_Koukharsky
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spelling paper:paper_00044822_v61_n3_p449_Koukharsky2023-06-08T14:26:01Z Upper Paleozoic peperites at the northern margin of the Mendoza River, eastern border of the Cordillera Frontal Cordillera Frontal Late Paleozoic Paleovolcanism Peperites Tambillos Formation dike lava Paleozoic peperite volcanic eruption volcanic rock volcanism Andes Argentina Cordillera Frontal Mendoza South America An outcrop of Tambillos Formation of the Choiyoi Group is described. It is composed mostly by peperites, being recognized the types amoeboid, globular, blocky and of mixed morphologies. The lavas that gave origin to these rocks had intermediate or acid compositions with scarce oligoclase and biotite phenocrysts, and the sediments which they had interacted were of volcanic origin. In the outcrop, sectors of lavas and laminated sandstones are also described, and constitute a complex that would have originated by the irruption of lava in the bottom of a lake of about 130 km2. The rocks were affected by argillic alteration and silicification. The complex was intruded by basaltic dikes that belong to another magmatic cycle. The area is proposed as a site of geologic interest based on its accessibility, magnitude and quality of the outcrops, which illustrate an uncommon paleovolcanic process, occurred during the Late Paleozoic. © 2006 Asociación Geológica Argentina. 2006 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v61_n3_p449_Koukharsky http://hdl.handle.net/20.500.12110/paper_00044822_v61_n3_p449_Koukharsky
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Cordillera Frontal
Late Paleozoic
Paleovolcanism
Peperites
Tambillos Formation
dike
lava
Paleozoic
peperite
volcanic eruption
volcanic rock
volcanism
Andes
Argentina
Cordillera Frontal
Mendoza
South America
spellingShingle Cordillera Frontal
Late Paleozoic
Paleovolcanism
Peperites
Tambillos Formation
dike
lava
Paleozoic
peperite
volcanic eruption
volcanic rock
volcanism
Andes
Argentina
Cordillera Frontal
Mendoza
South America
Upper Paleozoic peperites at the northern margin of the Mendoza River, eastern border of the Cordillera Frontal
topic_facet Cordillera Frontal
Late Paleozoic
Paleovolcanism
Peperites
Tambillos Formation
dike
lava
Paleozoic
peperite
volcanic eruption
volcanic rock
volcanism
Andes
Argentina
Cordillera Frontal
Mendoza
South America
description An outcrop of Tambillos Formation of the Choiyoi Group is described. It is composed mostly by peperites, being recognized the types amoeboid, globular, blocky and of mixed morphologies. The lavas that gave origin to these rocks had intermediate or acid compositions with scarce oligoclase and biotite phenocrysts, and the sediments which they had interacted were of volcanic origin. In the outcrop, sectors of lavas and laminated sandstones are also described, and constitute a complex that would have originated by the irruption of lava in the bottom of a lake of about 130 km2. The rocks were affected by argillic alteration and silicification. The complex was intruded by basaltic dikes that belong to another magmatic cycle. The area is proposed as a site of geologic interest based on its accessibility, magnitude and quality of the outcrops, which illustrate an uncommon paleovolcanic process, occurred during the Late Paleozoic. © 2006 Asociación Geológica Argentina.
title Upper Paleozoic peperites at the northern margin of the Mendoza River, eastern border of the Cordillera Frontal
title_short Upper Paleozoic peperites at the northern margin of the Mendoza River, eastern border of the Cordillera Frontal
title_full Upper Paleozoic peperites at the northern margin of the Mendoza River, eastern border of the Cordillera Frontal
title_fullStr Upper Paleozoic peperites at the northern margin of the Mendoza River, eastern border of the Cordillera Frontal
title_full_unstemmed Upper Paleozoic peperites at the northern margin of the Mendoza River, eastern border of the Cordillera Frontal
title_sort upper paleozoic peperites at the northern margin of the mendoza river, eastern border of the cordillera frontal
publishDate 2006
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v61_n3_p449_Koukharsky
http://hdl.handle.net/20.500.12110/paper_00044822_v61_n3_p449_Koukharsky
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