Stratigraphic analysis of the neopaleozoic sequences in the northern precordillera
This paper deals with the stratigraphic nomenclature, paleoenvironmental evolution, fossil assemblages and age of the Carboniferous and Permian units outcropping in the northern Precordillera. The Mississippian stratigraphy is characterized in the type area of the Angualasto Group (sierra de Malimán...
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2017
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paper:paper_00044822_v74_n4_p449_Limarino2023-06-08T14:27:01Z Stratigraphic analysis of the neopaleozoic sequences in the northern precordillera Carboniferous Permian Precordillera Stratigraphy This paper deals with the stratigraphic nomenclature, paleoenvironmental evolution, fossil assemblages and age of the Carboniferous and Permian units outcropping in the northern Precordillera. The Mississippian stratigraphy is characterized in the type area of the Angualasto Group (sierra de Malimán) and the relations with other sequences of similar age exposed in the Precordillera examined in detail (Jagüel, Agua de Lucho, Cerro Tres Cóndores and Loma de Los Piojos Formations). The paleoenvironmental evolution of the Mississippian comprises several transgresive events and at least one glacial episode during the Visean-early Serpukhovian. Regarding the lower and middle Pennsylvanian, the stratigraphic meaning of the Guandacol and Tupe Formations (Paganzo Group) is analyzed, as well as the correlations with the Río del Peñón, Quebrada Larga, Panacán and Volcán Formations which were defined by previous authors in Precordillera. All these units represent the post orogenic sedimentation that took place after the uplift of the Protoprecordillera during the Late Devonian - Mississippian. From the paleoenvironmental point of view, the Lower and Middle Pennsylvanian interval was dominated by glacial conditions (base of the Guandacol Formation), followed by a transgressive postglacial event and the later progradation of fluviodeltaic systems (middle and upper part of the Guandacol Formation). During the deposition of the Tupe Formation, the sedimentation was dominantly fluvial and interrupted by two transgressive episodes. Finally, the red beds of the Patquía Formation records the latest Carboniferous and early Permian (Gzhelian-Cisuralian), this unit is a time equivalent with the middle and upper members of the Quebrada Larga and Río del Peñón Formations. © 2017, Asociacion Geologica Argentina. All rights reserved. 2017 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v74_n4_p449_Limarino http://hdl.handle.net/20.500.12110/paper_00044822_v74_n4_p449_Limarino |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Carboniferous Permian Precordillera Stratigraphy |
| spellingShingle |
Carboniferous Permian Precordillera Stratigraphy Stratigraphic analysis of the neopaleozoic sequences in the northern precordillera |
| topic_facet |
Carboniferous Permian Precordillera Stratigraphy |
| description |
This paper deals with the stratigraphic nomenclature, paleoenvironmental evolution, fossil assemblages and age of the Carboniferous and Permian units outcropping in the northern Precordillera. The Mississippian stratigraphy is characterized in the type area of the Angualasto Group (sierra de Malimán) and the relations with other sequences of similar age exposed in the Precordillera examined in detail (Jagüel, Agua de Lucho, Cerro Tres Cóndores and Loma de Los Piojos Formations). The paleoenvironmental evolution of the Mississippian comprises several transgresive events and at least one glacial episode during the Visean-early Serpukhovian. Regarding the lower and middle Pennsylvanian, the stratigraphic meaning of the Guandacol and Tupe Formations (Paganzo Group) is analyzed, as well as the correlations with the Río del Peñón, Quebrada Larga, Panacán and Volcán Formations which were defined by previous authors in Precordillera. All these units represent the post orogenic sedimentation that took place after the uplift of the Protoprecordillera during the Late Devonian - Mississippian. From the paleoenvironmental point of view, the Lower and Middle Pennsylvanian interval was dominated by glacial conditions (base of the Guandacol Formation), followed by a transgressive postglacial event and the later progradation of fluviodeltaic systems (middle and upper part of the Guandacol Formation). During the deposition of the Tupe Formation, the sedimentation was dominantly fluvial and interrupted by two transgressive episodes. Finally, the red beds of the Patquía Formation records the latest Carboniferous and early Permian (Gzhelian-Cisuralian), this unit is a time equivalent with the middle and upper members of the Quebrada Larga and Río del Peñón Formations. © 2017, Asociacion Geologica Argentina. All rights reserved. |
| title |
Stratigraphic analysis of the neopaleozoic sequences in the northern precordillera |
| title_short |
Stratigraphic analysis of the neopaleozoic sequences in the northern precordillera |
| title_full |
Stratigraphic analysis of the neopaleozoic sequences in the northern precordillera |
| title_fullStr |
Stratigraphic analysis of the neopaleozoic sequences in the northern precordillera |
| title_full_unstemmed |
Stratigraphic analysis of the neopaleozoic sequences in the northern precordillera |
| title_sort |
stratigraphic analysis of the neopaleozoic sequences in the northern precordillera |
| publishDate |
2017 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v74_n4_p449_Limarino http://hdl.handle.net/20.500.12110/paper_00044822_v74_n4_p449_Limarino |
| _version_ |
1768546281621291008 |