Hybrid coastal edges in the Neuquén Basin (Allen Formation, Upper Cretaceous, Argentina)

The Allen Formation records the first Ingression Atlantic to the Neuquén Basin during the Late Cretaceous. The definition of lithofacies and facies associations interpretation for stratigraphic sections in Paso Córdoba and Salitral Moreno area, Río Negro, Argentina allowed to establish the depositio...

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Autores principales:	Armas,Paula, Sánchez,María Lidia
Lenguaje:	English
Publicado:	Servicio Nacional de Geología y Minería (SERNAGEOMIN) 2015
Materias:	Sedimentary paleoenvironment Tidal channels Intertidal flat Subtidal flat Hommocky Upper Cretaceous Malargue Group Argentina
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-71062015000100006
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spelling	oai:scielo:S0718-710620150001000062015-03-12Hybrid coastal edges in the Neuquén Basin (Allen Formation, Upper Cretaceous, Argentina)Armas,PaulaSánchez,María Lidia Sedimentary paleoenvironment Tidal channels Intertidal flat Subtidal flat Hommocky Upper Cretaceous Malargue Group Argentina The Allen Formation records the first Ingression Atlantic to the Neuquén Basin during the Late Cretaceous. The definition of lithofacies and facies associations interpretation for stratigraphic sections in Paso Córdoba and Salitral Moreno area, Río Negro, Argentina allowed to establish the depositional system that characterized this transgression in the northeastern edge of the Basin. In this paper we present sedimentological analysis of conglomeratic, sandstone, heterolithic and pelitic facies, which allowed the interpretation of tidal channels (TC), intertidal flats (ITF), storms-influenced tidal flat (SITF), subtidal flat (STF) and shoreface deposits (SF) parts of the depositional environment. These deposits represent a sedimentary records preserved example of hybrid systems, in which, the base of the sequence has greater tidal influence, while the upper portion is dominated by wave action. The paleocurrent data indicating a NNW-SSE direction to the shore and correlations and spatial distribution of facies associations propose paleogeographic and paleoenvironmental interpretations to Malargue Group base. Then in this paper the relationship of this coastal environment presents with wind systems previously defined in this area for the Allen Formation.info:eu-repo/semantics/openAccessServicio Nacional de Geología y Minería (SERNAGEOMIN)Andean geology v.42 n.1 20152015-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-71062015000100006en10.5027/andgeoV42n1-a06
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Sedimentary paleoenvironment Tidal channels Intertidal flat Subtidal flat Hommocky Upper Cretaceous Malargue Group Argentina
spellingShingle	Sedimentary paleoenvironment Tidal channels Intertidal flat Subtidal flat Hommocky Upper Cretaceous Malargue Group Argentina Armas,Paula Sánchez,María Lidia Hybrid coastal edges in the Neuquén Basin (Allen Formation, Upper Cretaceous, Argentina)
description	The Allen Formation records the first Ingression Atlantic to the Neuquén Basin during the Late Cretaceous. The definition of lithofacies and facies associations interpretation for stratigraphic sections in Paso Córdoba and Salitral Moreno area, Río Negro, Argentina allowed to establish the depositional system that characterized this transgression in the northeastern edge of the Basin. In this paper we present sedimentological analysis of conglomeratic, sandstone, heterolithic and pelitic facies, which allowed the interpretation of tidal channels (TC), intertidal flats (ITF), storms-influenced tidal flat (SITF), subtidal flat (STF) and shoreface deposits (SF) parts of the depositional environment. These deposits represent a sedimentary records preserved example of hybrid systems, in which, the base of the sequence has greater tidal influence, while the upper portion is dominated by wave action. The paleocurrent data indicating a NNW-SSE direction to the shore and correlations and spatial distribution of facies associations propose paleogeographic and paleoenvironmental interpretations to Malargue Group base. Then in this paper the relationship of this coastal environment presents with wind systems previously defined in this area for the Allen Formation.
author	Armas,Paula Sánchez,María Lidia
author_facet	Armas,Paula Sánchez,María Lidia
author_sort	Armas,Paula
title	Hybrid coastal edges in the Neuquén Basin (Allen Formation, Upper Cretaceous, Argentina)
title_short	Hybrid coastal edges in the Neuquén Basin (Allen Formation, Upper Cretaceous, Argentina)
title_full	Hybrid coastal edges in the Neuquén Basin (Allen Formation, Upper Cretaceous, Argentina)
title_fullStr	Hybrid coastal edges in the Neuquén Basin (Allen Formation, Upper Cretaceous, Argentina)
title_full_unstemmed	Hybrid coastal edges in the Neuquén Basin (Allen Formation, Upper Cretaceous, Argentina)
title_sort	hybrid coastal edges in the neuquén basin (allen formation, upper cretaceous, argentina)
publisher	Servicio Nacional de Geología y Minería (SERNAGEOMIN)
publishDate	2015
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-71062015000100006
work_keys_str_mv	AT armaspaula hybridcoastaledgesintheneuquenbasinallenformationuppercretaceousargentina AT sanchezmarialidia hybridcoastaledgesintheneuquenbasinallenformationuppercretaceousargentina
_version_	1714205848360714240

Hybrid coastal edges in the Neuquén Basin (Allen Formation, Upper Cretaceous, Argentina)

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