Paleoenvironmental model of La Flecha Formation (Upper Cambrian) from Jáchal region, San Juan province

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La Flecha Formation (Upper Cambrian) in Precordillera Central is composed of microbiolitic buildups, with a shallowing upward tendency. This paper includes the study of mega, meso and microstructure of thrombolites and stromatolites and the microfacial analysis of the muddy sequence. The following m...

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Detalles Bibliográficos
Autores principales:	Armella, C., Cabaleri, N., Valencio, S.
Formato:	Artículo publishedVersion
Lenguaje:	Inglés
Publicado:	1996
Materias:	Cambrian carbonate platform facies distribution palaeoenvironment stromatolite thrombolite Brazil, San Juan
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00044822_v51_n2_p165_Armella
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paperaa:paper_00044822_v51_n2_p165_Armella
record_format	dspace
spelling	paperaa:paper_00044822_v51_n2_p165_Armella2023-06-12T16:39:48Z Paleoenvironmental model of La Flecha Formation (Upper Cambrian) from Jáchal region, San Juan province Rev. Asoc. Geol. Argent. 1996;51(2):165-176 Armella, C. Cabaleri, N. Valencio, S. Cambrian carbonate platform facies distribution palaeoenvironment stromatolite thrombolite Brazil, San Juan La Flecha Formation (Upper Cambrian) in Precordillera Central is composed of microbiolitic buildups, with a shallowing upward tendency. This paper includes the study of mega, meso and microstructure of thrombolites and stromatolites and the microfacial analysis of the muddy sequence. The following microbiolitic facies were recognized: F1: stratiform and domal stroms, with low synoptic relief, F2: stratiform thrombolites, F3: stratiform-domal thrombolites with low synoptic relief, F4: inverted cone-shaped thrombolites and F5: domal thrombolites. The associated muddy microfacies are represented by: MF6: mudstone with microbial lamination and fenestral fabric, MF7: mudstone with grumous microestructure, MF8: bioturbed mudstone and MF9: floatstone, related to storms. The depositional model of this sequence was interpreted as a carbonatic platform with a complex of non-emergent microbialitic mounds and ponds with restricted circulation. Fil:Armella, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Cabaleri, N. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Valencio, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1996 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_v51_n2_p165_Armella
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	Cambrian carbonate platform facies distribution palaeoenvironment stromatolite thrombolite Brazil, San Juan
spellingShingle	Cambrian carbonate platform facies distribution palaeoenvironment stromatolite thrombolite Brazil, San Juan Armella, C. Cabaleri, N. Valencio, S. Paleoenvironmental model of La Flecha Formation (Upper Cambrian) from Jáchal region, San Juan province
topic_facet	Cambrian carbonate platform facies distribution palaeoenvironment stromatolite thrombolite Brazil, San Juan
description	La Flecha Formation (Upper Cambrian) in Precordillera Central is composed of microbiolitic buildups, with a shallowing upward tendency. This paper includes the study of mega, meso and microstructure of thrombolites and stromatolites and the microfacial analysis of the muddy sequence. The following microbiolitic facies were recognized: F1: stratiform and domal stroms, with low synoptic relief, F2: stratiform thrombolites, F3: stratiform-domal thrombolites with low synoptic relief, F4: inverted cone-shaped thrombolites and F5: domal thrombolites. The associated muddy microfacies are represented by: MF6: mudstone with microbial lamination and fenestral fabric, MF7: mudstone with grumous microestructure, MF8: bioturbed mudstone and MF9: floatstone, related to storms. The depositional model of this sequence was interpreted as a carbonatic platform with a complex of non-emergent microbialitic mounds and ponds with restricted circulation.
format	Artículo Artículo publishedVersion
author	Armella, C. Cabaleri, N. Valencio, S.
author_facet	Armella, C. Cabaleri, N. Valencio, S.
author_sort	Armella, C.
title	Paleoenvironmental model of La Flecha Formation (Upper Cambrian) from Jáchal region, San Juan province
title_short	Paleoenvironmental model of La Flecha Formation (Upper Cambrian) from Jáchal region, San Juan province
title_full	Paleoenvironmental model of La Flecha Formation (Upper Cambrian) from Jáchal region, San Juan province
title_fullStr	Paleoenvironmental model of La Flecha Formation (Upper Cambrian) from Jáchal region, San Juan province
title_full_unstemmed	Paleoenvironmental model of La Flecha Formation (Upper Cambrian) from Jáchal region, San Juan province
title_sort	paleoenvironmental model of la flecha formation (upper cambrian) from jáchal region, san juan province
publishDate	1996
url	http://hdl.handle.net/20.500.12110/paper_00044822_v51_n2_p165_Armella
work_keys_str_mv	AT armellac paleoenvironmentalmodeloflaflechaformationuppercambrianfromjachalregionsanjuanprovince AT cabalerin paleoenvironmentalmodeloflaflechaformationuppercambrianfromjachalregionsanjuanprovince AT valencios paleoenvironmentalmodeloflaflechaformationuppercambrianfromjachalregionsanjuanprovince
_version_	1769810253612843008

Paleoenvironmental model of La Flecha Formation (Upper Cambrian) from Jáchal region, San Juan province

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