Facies analysis and stratigraphic assignment of Middle Jurassic unnamed fluvial deposits in the Southern Mendoza Neuquén Basin

Stratigraphic-sedimentological studies were performed on Middle Jurassic unnamed fluvial deposits of the Southern Mendoza Neuquén Basin, cropping out in the Malargüe anticline and Bardas Blancas. In the first area we recognized braided fluvial systems facies stacked in three depositional sequences s...

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Autores principales: Kietzmann, D.A., Palma, R.M., Ferreyra, T.M.A.
Formato: JOUR
Materias:
Fluvial
Lajas formation
Lotena formation
Sequence stratigraphy
braided river
depositional sequence
facies analysis
fluvial deposit
Jurassic
sequence stratigraphy
stratigraphic correlation
stratotype
unconformity
Argentina
Mendoza
Neuquen Basin
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00044822_v73_n1_p104_Kietzmann
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00044822_v73_n1_p104_Kietzmann
record_format dspace
spelling todo:paper_00044822_v73_n1_p104_Kietzmann2023-10-03T13:59:11Z Facies analysis and stratigraphic assignment of Middle Jurassic unnamed fluvial deposits in the Southern Mendoza Neuquén Basin Kietzmann, D.A. Palma, R.M. Ferreyra, T.M.A. Fluvial Lajas formation Lotena formation Sequence stratigraphy braided river depositional sequence facies analysis fluvial deposit Jurassic sequence stratigraphy stratigraphic correlation stratotype unconformity Argentina Mendoza Neuquen Basin Stratigraphic-sedimentological studies were performed on Middle Jurassic unnamed fluvial deposits of the Southern Mendoza Neuquén Basin, cropping out in the Malargüe anticline and Bardas Blancas. In the first area we recognized braided fluvial systems facies stacked in three depositional sequences showing a gradual decrease in the accommodation space, whereas in the second we recognized anastomosing fluvial systems facies grouped into two depositional sequences with a progressive increase in the accommodation space. Stratigraphic relationships and stacking pattern in the Malargüe anticline suggests the assignment of this unit to the late Bajocian-Bathonian and its correlation with the Lajas Formation, so the name of Puesto Pacheco Formation nov. nom. is proposed, with its stratotype in the Loncoche creek section. In the Bardas Blancas area the presence of limestone clasts and oysters fragments at the base of the unit, would establish that unnamed fluvial deposits would have been deposited after the Intracallovian unconformity. In this area it is given a middle-late Callovian age and the assignment to the Lotena Formation. © 2016, Asociacion Geologica Argentina. All rights reserved. Fil:Kietzmann, D.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Palma, R.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00044822_v73_n1_p104_Kietzmann
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Fluvial
Lajas formation
Lotena formation
Sequence stratigraphy
braided river
depositional sequence
facies analysis
fluvial deposit
Jurassic
sequence stratigraphy
stratigraphic correlation
stratotype
unconformity
Argentina
Mendoza
Neuquen Basin
spellingShingle Fluvial
Lajas formation
Lotena formation
Sequence stratigraphy
braided river
depositional sequence
facies analysis
fluvial deposit
Jurassic
sequence stratigraphy
stratigraphic correlation
stratotype
unconformity
Argentina
Mendoza
Neuquen Basin
Kietzmann, D.A.
Palma, R.M.
Ferreyra, T.M.A.
Facies analysis and stratigraphic assignment of Middle Jurassic unnamed fluvial deposits in the Southern Mendoza Neuquén Basin
topic_facet Fluvial
Lajas formation
Lotena formation
Sequence stratigraphy
braided river
depositional sequence
facies analysis
fluvial deposit
Jurassic
sequence stratigraphy
stratigraphic correlation
stratotype
unconformity
Argentina
Mendoza
Neuquen Basin
description Stratigraphic-sedimentological studies were performed on Middle Jurassic unnamed fluvial deposits of the Southern Mendoza Neuquén Basin, cropping out in the Malargüe anticline and Bardas Blancas. In the first area we recognized braided fluvial systems facies stacked in three depositional sequences showing a gradual decrease in the accommodation space, whereas in the second we recognized anastomosing fluvial systems facies grouped into two depositional sequences with a progressive increase in the accommodation space. Stratigraphic relationships and stacking pattern in the Malargüe anticline suggests the assignment of this unit to the late Bajocian-Bathonian and its correlation with the Lajas Formation, so the name of Puesto Pacheco Formation nov. nom. is proposed, with its stratotype in the Loncoche creek section. In the Bardas Blancas area the presence of limestone clasts and oysters fragments at the base of the unit, would establish that unnamed fluvial deposits would have been deposited after the Intracallovian unconformity. In this area it is given a middle-late Callovian age and the assignment to the Lotena Formation. © 2016, Asociacion Geologica Argentina. All rights reserved.
format JOUR
author Kietzmann, D.A.
Palma, R.M.
Ferreyra, T.M.A.
author_facet Kietzmann, D.A.
Palma, R.M.
Ferreyra, T.M.A.
author_sort Kietzmann, D.A.
title Facies analysis and stratigraphic assignment of Middle Jurassic unnamed fluvial deposits in the Southern Mendoza Neuquén Basin
title_short Facies analysis and stratigraphic assignment of Middle Jurassic unnamed fluvial deposits in the Southern Mendoza Neuquén Basin
title_full Facies analysis and stratigraphic assignment of Middle Jurassic unnamed fluvial deposits in the Southern Mendoza Neuquén Basin
title_fullStr Facies analysis and stratigraphic assignment of Middle Jurassic unnamed fluvial deposits in the Southern Mendoza Neuquén Basin
title_full_unstemmed Facies analysis and stratigraphic assignment of Middle Jurassic unnamed fluvial deposits in the Southern Mendoza Neuquén Basin
title_sort facies analysis and stratigraphic assignment of middle jurassic unnamed fluvial deposits in the southern mendoza neuquén basin
url http://hdl.handle.net/20.500.12110/paper_00044822_v73_n1_p104_Kietzmann
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AT palmarm faciesanalysisandstratigraphicassignmentofmiddlejurassicunnamedfluvialdepositsinthesouthernmendozaneuquenbasin
AT ferreyratma faciesanalysisandstratigraphicassignmentofmiddlejurassicunnamedfluvialdepositsinthesouthernmendozaneuquenbasin
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