Stratigraphy and sedimentology of the terminal fan of Candeleros Formation (Neuquen Group), Lower Cretaceous, Neuquen Basin, provinces of Neuquen and Mendoza, Argentina

The Candeleros Formation is represented by a succession of deposits that represent terminal fans starting to fill a foreland basin (back-arc) during the Albian. The different sub-environments of the terminal fan suggest low gradients during the onset of deposition of the Río Limay Subgroup (Neuquén...

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Autores principales:	Sánchez,María Lidia, Asurmendi,Estefanía
Lenguaje:	English
Publicado:	Servicio Nacional de Geología y Minería (SERNAGEOMIN) 2015
Materias:	Candeleros Formation Neuquén Basin Terminal fan
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-71062015000300003
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spelling	oai:scielo:S0718-710620150003000032015-10-20Stratigraphy and sedimentology of the terminal fan of Candeleros Formation (Neuquen Group), Lower Cretaceous, Neuquen Basin, provinces of Neuquen and Mendoza, ArgentinaSánchez,María LidiaAsurmendi,Estefanía Candeleros Formation Neuquén Basin Terminal fan The Candeleros Formation is represented by a succession of deposits that represent terminal fans starting to fill a foreland basin (back-arc) during the Albian. The different sub-environments of the terminal fan suggest low gradients during the onset of deposition of the Río Limay Subgroup (Neuquén Group). The terminal fan system is represented by distributary zone (TF-DZ), distributary zone-base zone (TF-DZBZ) and base zone deposits (TF-BZ). Its most notable feature is the presence of bitumen in "pockets" and scattered in the sandstone channel fill and crevasse splays deposit. In this system the feeder zone of the terminal fan system has not been identified, however, the distribution of architectural elements and paleocurrent data allow us to infer that the catchment area of the backbone would have been located to the NNW/NW. Distributary zone deposits are characterized by thick deposits of low sinuosity channel, with a high degree of connectivity and strong vertical aggradation of channel belts. Deposits of distributary zone-base zone are characterized by a higher density of channel deposits/distributary plain, but with belt channel less thick, longer laterally, greater width/thickness ratio and connectivity in the braided deposits. The distal parts of the terminal fan are well represented and vary only in the channelized deposits and mantle/floodplain ratio, which is abruptly reduced towards the flood basin connection. The importance of Candeleros Formation deposits is that they are remnants of accommodation that preserved the original architecture and represent exhumed reservoirs.info:eu-repo/semantics/openAccessServicio Nacional de Geología y Minería (SERNAGEOMIN)Andean geology v.42 n.3 20152015-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-71062015000300003en10.5027/andgeoV42n3-a03
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Candeleros Formation Neuquén Basin Terminal fan
spellingShingle	Candeleros Formation Neuquén Basin Terminal fan Sánchez,María Lidia Asurmendi,Estefanía Stratigraphy and sedimentology of the terminal fan of Candeleros Formation (Neuquen Group), Lower Cretaceous, Neuquen Basin, provinces of Neuquen and Mendoza, Argentina
description	The Candeleros Formation is represented by a succession of deposits that represent terminal fans starting to fill a foreland basin (back-arc) during the Albian. The different sub-environments of the terminal fan suggest low gradients during the onset of deposition of the Río Limay Subgroup (Neuquén Group). The terminal fan system is represented by distributary zone (TF-DZ), distributary zone-base zone (TF-DZBZ) and base zone deposits (TF-BZ). Its most notable feature is the presence of bitumen in "pockets" and scattered in the sandstone channel fill and crevasse splays deposit. In this system the feeder zone of the terminal fan system has not been identified, however, the distribution of architectural elements and paleocurrent data allow us to infer that the catchment area of the backbone would have been located to the NNW/NW. Distributary zone deposits are characterized by thick deposits of low sinuosity channel, with a high degree of connectivity and strong vertical aggradation of channel belts. Deposits of distributary zone-base zone are characterized by a higher density of channel deposits/distributary plain, but with belt channel less thick, longer laterally, greater width/thickness ratio and connectivity in the braided deposits. The distal parts of the terminal fan are well represented and vary only in the channelized deposits and mantle/floodplain ratio, which is abruptly reduced towards the flood basin connection. The importance of Candeleros Formation deposits is that they are remnants of accommodation that preserved the original architecture and represent exhumed reservoirs.
author	Sánchez,María Lidia Asurmendi,Estefanía
author_facet	Sánchez,María Lidia Asurmendi,Estefanía
author_sort	Sánchez,María Lidia
title	Stratigraphy and sedimentology of the terminal fan of Candeleros Formation (Neuquen Group), Lower Cretaceous, Neuquen Basin, provinces of Neuquen and Mendoza, Argentina
title_short	Stratigraphy and sedimentology of the terminal fan of Candeleros Formation (Neuquen Group), Lower Cretaceous, Neuquen Basin, provinces of Neuquen and Mendoza, Argentina
title_full	Stratigraphy and sedimentology of the terminal fan of Candeleros Formation (Neuquen Group), Lower Cretaceous, Neuquen Basin, provinces of Neuquen and Mendoza, Argentina
title_fullStr	Stratigraphy and sedimentology of the terminal fan of Candeleros Formation (Neuquen Group), Lower Cretaceous, Neuquen Basin, provinces of Neuquen and Mendoza, Argentina
title_full_unstemmed	Stratigraphy and sedimentology of the terminal fan of Candeleros Formation (Neuquen Group), Lower Cretaceous, Neuquen Basin, provinces of Neuquen and Mendoza, Argentina
title_sort	stratigraphy and sedimentology of the terminal fan of candeleros formation (neuquen group), lower cretaceous, neuquen basin, provinces of neuquen and mendoza, argentina
publisher	Servicio Nacional de Geología y Minería (SERNAGEOMIN)
publishDate	2015
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-71062015000300003
work_keys_str_mv	AT sanchezmarialidia stratigraphyandsedimentologyoftheterminalfanofcandelerosformationneuquengrouplowercretaceousneuquenbasinprovincesofneuquenandmendozaargentina AT asurmendiestefania stratigraphyandsedimentologyoftheterminalfanofcandelerosformationneuquengrouplowercretaceousneuquenbasinprovincesofneuquenandmendozaargentina
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Stratigraphy and sedimentology of the terminal fan of Candeleros Formation (Neuquen Group), Lower Cretaceous, Neuquen Basin, provinces of Neuquen and Mendoza, Argentina

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