Abstract:
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.
Registro:
Documento: |
Artículo
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Título: | Upper Paleozoic peperites at the northern margin of the Mendoza River, eastern border of the Cordillera Frontal |
Autor: | Koukharsky, M.; Avellaneda, D. |
Filiación: | Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina Universidad de Buenos Aires, Departamento de Ciencias Geológicas, Pabellón 2, Piso 1, Ciudad Universitaria C1428EHA, Argentina
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Palabras clave: | Cordillera Frontal; Late Paleozoic; Paleovolcanism; Peperites; Tambillos Formation; dike; lava; Paleozoic; peperite; volcanic eruption; volcanic rock; volcanism; Andes; Argentina; Cordillera Frontal; Mendoza; South America |
Año: | 2006
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Volumen: | 61
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Número: | 3
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Página de inicio: | 449
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Página de fin: | 451
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Título revista: | Revista de la Asociacion Geologica Argentina
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Título revista abreviado: | Rev. Asoc. Geol. Argent.
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ISSN: | 00044822
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v61_n3_p449_Koukharsky |
Referencias:
- Cortés, J.M., Vulcanitas y sedimentitas lacustres en la base del Grupo Choiyoi al sur de la estancia Tambillos, provincia de Mendoza. República Argentina. 4° Congreso Geológico Chileno (1985) Actas, 1 (1), pp. 89-108. , Antofagasta
- Cortés, J.M., González Bonorino, G., Koukharsky, M., Pereyra, F.X., Brodtkorb, A., Hoja Geológica 3369-09, Uspallata. Provincia de Mendoza, a escala 1:100.000. Servicio Geolǵico Minero Argentino (1999) Boletín, 281, pp. 1-164. , Buenos Aires
- González: Bonorino, G. 1997. Informe sedimentológico de la Hoja 3369-09. Uspallata, provincia de Mendoza. Servicio Geológico Minero Argentino (inédito) 28 p., Buenos Aires; Rapalini, A., (1989) Estudio paleomagnético del vulcanismo permotriásico de la region andina de la República Argentina, , Tesis Doctoral Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires (inédito) 278 p, Buenos Aires
- Skilling, I.P., White, J.D.L., McPhie, J., Peperite: A review of magma-sediment mingling (2002) Journal of Volcanology and Geothermal Research, 114, pp. 1-17
- White, J.D.L., McPhie, J., Skilling, I., Peperite: A useful genetic term (2000) Bulletin of Volcanology, 62 (1), pp. 65-66
Citas:
---------- APA ----------
Koukharsky, M. & Avellaneda, D.
(2006)
. Upper Paleozoic peperites at the northern margin of the Mendoza River, eastern border of the Cordillera Frontal . Revista de la Asociacion Geologica Argentina, 61(3), 449-451.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v61_n3_p449_Koukharsky [ ]
---------- CHICAGO ----------
Koukharsky, M., Avellaneda, D.
"Upper Paleozoic peperites at the northern margin of the Mendoza River, eastern border of the Cordillera Frontal "
. Revista de la Asociacion Geologica Argentina 61, no. 3
(2006) : 449-451.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v61_n3_p449_Koukharsky [ ]
---------- MLA ----------
Koukharsky, M., Avellaneda, D.
"Upper Paleozoic peperites at the northern margin of the Mendoza River, eastern border of the Cordillera Frontal "
. Revista de la Asociacion Geologica Argentina, vol. 61, no. 3, 2006, pp. 449-451.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v61_n3_p449_Koukharsky [ ]
---------- VANCOUVER ----------
Koukharsky, M., Avellaneda, D. Upper Paleozoic peperites at the northern margin of the Mendoza River, eastern border of the Cordillera Frontal . Rev. Asoc. Geol. Argent. 2006;61(3):449-451.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v61_n3_p449_Koukharsky [ ]