The petrography, origin and sedimentary paleoenvironment of Remoredo Formation pyroclastic rocks (Lower Jurassic), 35°30'S-70°15'W, Argentina

Formation, which surround a phenoandesitic intrusive (Cerro Negro Andésite), allowed the authors to recognize two facies associations: 1 - Tuff-Breccia Association and 2- Tuff Association. They were interpreted as 1 - proximal co-ignimbrite lag breccia and 2- associated ignimbrites and co-ignimbrite...

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Detalles Bibliográficos
Publicado:	1998
Materias:	Ash falls Coignimbritic breccias Ignimbrites Jurassic Pyroclastites Sedimentology facies analysis ignimbrite pyroclastic deposit sedimentology volcanic ash Argentina
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07160208_v25_n2_p141_Lanes http://hdl.handle.net/20.500.12110/paper_07160208_v25_n2_p141_Lanes
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_07160208_v25_n2_p141_Lanes
record_format	dspace
spelling	paper:paper_07160208_v25_n2_p141_Lanes2025-07-30T18:19:14Z The petrography, origin and sedimentary paleoenvironment of Remoredo Formation pyroclastic rocks (Lower Jurassic), 35°30'S-70°15'W, Argentina Ash falls Coignimbritic breccias Ignimbrites Jurassic Pyroclastites Sedimentology facies analysis ignimbrite pyroclastic deposit sedimentology volcanic ash Argentina Formation, which surround a phenoandesitic intrusive (Cerro Negro Andésite), allowed the authors to recognize two facies associations: 1 - Tuff-Breccia Association and 2- Tuff Association. They were interpreted as 1 - proximal co-ignimbrite lag breccia and 2- associated ignimbrites and co-ignimbrite air-fall tuffs, respectively, all of them derived from flows that were originated by gravitational column collapses. Paleocurrents, internal structures and provenance of the lithics point to the Cerro Negro Andésite intrusion as one of the source vents although not excluding others located further west of the study area. Tuffs of the middle section of Remoredo Formation were deposited into an ephemeral lake, while the rest were deposited under subaerial conditions. 1998 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07160208_v25_n2_p141_Lanes http://hdl.handle.net/20.500.12110/paper_07160208_v25_n2_p141_Lanes
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Ash falls Coignimbritic breccias Ignimbrites Jurassic Pyroclastites Sedimentology facies analysis ignimbrite pyroclastic deposit sedimentology volcanic ash Argentina
spellingShingle	Ash falls Coignimbritic breccias Ignimbrites Jurassic Pyroclastites Sedimentology facies analysis ignimbrite pyroclastic deposit sedimentology volcanic ash Argentina The petrography, origin and sedimentary paleoenvironment of Remoredo Formation pyroclastic rocks (Lower Jurassic), 35°30'S-70°15'W, Argentina
topic_facet	Ash falls Coignimbritic breccias Ignimbrites Jurassic Pyroclastites Sedimentology facies analysis ignimbrite pyroclastic deposit sedimentology volcanic ash Argentina
description	Formation, which surround a phenoandesitic intrusive (Cerro Negro Andésite), allowed the authors to recognize two facies associations: 1 - Tuff-Breccia Association and 2- Tuff Association. They were interpreted as 1 - proximal co-ignimbrite lag breccia and 2- associated ignimbrites and co-ignimbrite air-fall tuffs, respectively, all of them derived from flows that were originated by gravitational column collapses. Paleocurrents, internal structures and provenance of the lithics point to the Cerro Negro Andésite intrusion as one of the source vents although not excluding others located further west of the study area. Tuffs of the middle section of Remoredo Formation were deposited into an ephemeral lake, while the rest were deposited under subaerial conditions.
title	The petrography, origin and sedimentary paleoenvironment of Remoredo Formation pyroclastic rocks (Lower Jurassic), 35°30'S-70°15'W, Argentina
title_short	The petrography, origin and sedimentary paleoenvironment of Remoredo Formation pyroclastic rocks (Lower Jurassic), 35°30'S-70°15'W, Argentina
title_full	The petrography, origin and sedimentary paleoenvironment of Remoredo Formation pyroclastic rocks (Lower Jurassic), 35°30'S-70°15'W, Argentina
title_fullStr	The petrography, origin and sedimentary paleoenvironment of Remoredo Formation pyroclastic rocks (Lower Jurassic), 35°30'S-70°15'W, Argentina
title_full_unstemmed	The petrography, origin and sedimentary paleoenvironment of Remoredo Formation pyroclastic rocks (Lower Jurassic), 35°30'S-70°15'W, Argentina
title_sort	petrography, origin and sedimentary paleoenvironment of remoredo formation pyroclastic rocks (lower jurassic), 35°30's-70°15'w, argentina
publishDate	1998
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07160208_v25_n2_p141_Lanes http://hdl.handle.net/20.500.12110/paper_07160208_v25_n2_p141_Lanes
_version_	1840322776872779776

The petrography, origin and sedimentary paleoenvironment of Remoredo Formation pyroclastic rocks (Lower Jurassic), 35°30'S-70°15'W, Argentina

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