Carboniferous deposits of northern Sierra de Tecka, central-western Patagonia, Argentina: paleontology, biostratigraphy and correlations

ABSTRACT A narrow upper Paleozoic belt crops out in the northern tip of Sierra de Tecka through the Quebrada de Güera-Peña (Patagonia, Argentina). There, black shales of the Pampa de Tepuel Formation contain marine fossil invertebrates previously listed as belonging to the “Levipustula&...

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Autores principales:	Taboada,Arturo C., Pagani,M. Alejandra, Pinilla,M. Karina, Tortello,M. Franco, Taboada,César A.
Lenguaje:	English
Publicado:	Servicio Nacional de Geología y Minería (SERNAGEOMIN) 2019
Materias:	Brachiopoda Bivalvia Gastropoda Trilobita Cnidaria Carboniferous Patagonia Argentina
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-71062019000300629
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spelling	oai:scielo:S0718-710620190003006292019-10-21Carboniferous deposits of northern Sierra de Tecka, central-western Patagonia, Argentina: paleontology, biostratigraphy and correlationsTaboada,Arturo C.Pagani,M. AlejandraPinilla,M. KarinaTortello,M. FrancoTaboada,César A. Brachiopoda Bivalvia Gastropoda Trilobita Cnidaria Carboniferous Patagonia Argentina ABSTRACT A narrow upper Paleozoic belt crops out in the northern tip of Sierra de Tecka through the Quebrada de Güera-Peña (Patagonia, Argentina). There, black shales of the Pampa de Tepuel Formation contain marine fossil invertebrates previously listed as belonging to the “Levipustula” fauna. Material recently recorded by the authors comprises, in order of abundance, gastropods [Glabrocingulum (Glabrocingulum) poperimense (Maxwell), G. (Stenozone) argentinum (Reed), G. (Stenozone) sp., Peruvispira teckaensis sp. nov., Ananias riccardii Pinilla], bivalves [Nuculopsis (Nuculopsis) patagoniensis González, Phestia tepuelensis González, Streblochondria sueroi González, Streblopteria sp.], conulariids [Paraconularia cf. ugartei Cúneo and Sabattini], brachiopods [Amosia sueroi Simanauskas, Languigneotus laevicaudatum (Amos), Beecheria patagonica Amos], trilobites [Australosutura argentinensis Hahn and Hahn], cephalopods [Pseudoorthoceratidae Flower and Caster, Sueroceras? sp., Mitorthoceras? sp.], and rugose corals [?Lophophyllidiidae Moore and Jeffords]. In addition, the present study includes the new key brachiopods Languigneotus dammanorum gen. et sp. nov. and Tuberculatella waterhousei sp. nov. from younger localities of the Tepuel-Genoa Basin. The Languigneotus laevicaudatum and Languigneotus-Verchojania subzones (late Pennsylvanian) are proposed herein to replace the former Tuberculatella Zone. In addition, previous stratigraphic relationships and correlations of the study section with the Arroyo Pescado (Estancia Ap Iwan) and Esquel areas are discussed. The general stratigraphic profile of a glacial-related section cropping out at Estancia Ap Iwan includes lower conglomeradic beds, which are reinterpreted as early Jurassic in age, and glacimarine levels that are partially equivalent to the Pampa de Tepuel Formation but older than those of Quebrada de Güera-Peña. A correlation of the Esquel Formation with the Arroyo Pescado Formation and other contemporaneous units on the paleopacific margin is assessed, implying that the Esquel Formation should be segregated from the Tepuel Group. The Esquel and Arroyo Pescado formations can be regarded as the basement of the glaciomarine column of the Tepuel-Genoa Basin.info:eu-repo/semantics/openAccessServicio Nacional de Geología y Minería (SERNAGEOMIN)Andean geology v.46 n.3 20192019-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-71062019000300629en10.5027/andgeov46n3-3143
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Brachiopoda Bivalvia Gastropoda Trilobita Cnidaria Carboniferous Patagonia Argentina
spellingShingle	Brachiopoda Bivalvia Gastropoda Trilobita Cnidaria Carboniferous Patagonia Argentina Taboada,Arturo C. Pagani,M. Alejandra Pinilla,M. Karina Tortello,M. Franco Taboada,César A. Carboniferous deposits of northern Sierra de Tecka, central-western Patagonia, Argentina: paleontology, biostratigraphy and correlations
description	ABSTRACT A narrow upper Paleozoic belt crops out in the northern tip of Sierra de Tecka through the Quebrada de Güera-Peña (Patagonia, Argentina). There, black shales of the Pampa de Tepuel Formation contain marine fossil invertebrates previously listed as belonging to the “Levipustula” fauna. Material recently recorded by the authors comprises, in order of abundance, gastropods [Glabrocingulum (Glabrocingulum) poperimense (Maxwell), G. (Stenozone) argentinum (Reed), G. (Stenozone) sp., Peruvispira teckaensis sp. nov., Ananias riccardii Pinilla], bivalves [Nuculopsis (Nuculopsis) patagoniensis González, Phestia tepuelensis González, Streblochondria sueroi González, Streblopteria sp.], conulariids [Paraconularia cf. ugartei Cúneo and Sabattini], brachiopods [Amosia sueroi Simanauskas, Languigneotus laevicaudatum (Amos), Beecheria patagonica Amos], trilobites [Australosutura argentinensis Hahn and Hahn], cephalopods [Pseudoorthoceratidae Flower and Caster, Sueroceras? sp., Mitorthoceras? sp.], and rugose corals [?Lophophyllidiidae Moore and Jeffords]. In addition, the present study includes the new key brachiopods Languigneotus dammanorum gen. et sp. nov. and Tuberculatella waterhousei sp. nov. from younger localities of the Tepuel-Genoa Basin. The Languigneotus laevicaudatum and Languigneotus-Verchojania subzones (late Pennsylvanian) are proposed herein to replace the former Tuberculatella Zone. In addition, previous stratigraphic relationships and correlations of the study section with the Arroyo Pescado (Estancia Ap Iwan) and Esquel areas are discussed. The general stratigraphic profile of a glacial-related section cropping out at Estancia Ap Iwan includes lower conglomeradic beds, which are reinterpreted as early Jurassic in age, and glacimarine levels that are partially equivalent to the Pampa de Tepuel Formation but older than those of Quebrada de Güera-Peña. A correlation of the Esquel Formation with the Arroyo Pescado Formation and other contemporaneous units on the paleopacific margin is assessed, implying that the Esquel Formation should be segregated from the Tepuel Group. The Esquel and Arroyo Pescado formations can be regarded as the basement of the glaciomarine column of the Tepuel-Genoa Basin.
author	Taboada,Arturo C. Pagani,M. Alejandra Pinilla,M. Karina Tortello,M. Franco Taboada,César A.
author_facet	Taboada,Arturo C. Pagani,M. Alejandra Pinilla,M. Karina Tortello,M. Franco Taboada,César A.
author_sort	Taboada,Arturo C.
title	Carboniferous deposits of northern Sierra de Tecka, central-western Patagonia, Argentina: paleontology, biostratigraphy and correlations
title_short	Carboniferous deposits of northern Sierra de Tecka, central-western Patagonia, Argentina: paleontology, biostratigraphy and correlations
title_full	Carboniferous deposits of northern Sierra de Tecka, central-western Patagonia, Argentina: paleontology, biostratigraphy and correlations
title_fullStr	Carboniferous deposits of northern Sierra de Tecka, central-western Patagonia, Argentina: paleontology, biostratigraphy and correlations
title_full_unstemmed	Carboniferous deposits of northern Sierra de Tecka, central-western Patagonia, Argentina: paleontology, biostratigraphy and correlations
title_sort	carboniferous deposits of northern sierra de tecka, central-western patagonia, argentina: paleontology, biostratigraphy and correlations
publisher	Servicio Nacional de Geología y Minería (SERNAGEOMIN)
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-71062019000300629
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Carboniferous deposits of northern Sierra de Tecka, central-western Patagonia, Argentina: paleontology, biostratigraphy and correlations

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