Tethyan calpionellids in the Neuquén Basin (Argentine Andes), their significance in defining the Jurassic/Cretaceous boundary and pathways for Tethyan-Eastern Pacific connections

The study of calpionellid distribution in the well-documented Las Loicas section of the Vaca Muerta Formation in the Neuquén Basin, Argentine Andes, allows the recognition of the upper part of the Crassicollaria Zone and the lower part of Calpionella Zone across the Jurassic/Cretaceous boundary. The...

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Autores principales: López-Martínez, R., Aguirre-Urreta, B., Lescano, M., Concheyro, A., Vennari, V., Ramos, V.A.
Formato: JOUR
Materias:
Andean region
Calpionellid
Hispanic Corridor
Jurassic/Cretaceous boundary
Paleobiogeography
Vaca Muerta Formation
eukaryote
fossil
Jurassic-Cretaceous boundary
paleobiogeography
paleoceanography
population distribution
Tethys
Andes
Argentina
Neuquen Basin
Pacific Ocean
Pacific Ocean (East)
Codonellopsidae
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_08959811_v78_n_p116_LopezMartinez
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_08959811_v78_n_p116_LopezMartinez
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spelling todo:paper_08959811_v78_n_p116_LopezMartinez2023-10-03T15:43:30Z Tethyan calpionellids in the Neuquén Basin (Argentine Andes), their significance in defining the Jurassic/Cretaceous boundary and pathways for Tethyan-Eastern Pacific connections López-Martínez, R. Aguirre-Urreta, B. Lescano, M. Concheyro, A. Vennari, V. Ramos, V.A. Andean region Calpionellid Hispanic Corridor Jurassic/Cretaceous boundary Paleobiogeography Vaca Muerta Formation eukaryote fossil Jurassic-Cretaceous boundary paleobiogeography paleoceanography population distribution Tethys Andes Argentina Neuquen Basin Pacific Ocean Pacific Ocean (East) Codonellopsidae The study of calpionellid distribution in the well-documented Las Loicas section of the Vaca Muerta Formation in the Neuquén Basin, Argentine Andes, allows the recognition of the upper part of the Crassicollaria Zone and the lower part of Calpionella Zone across the Jurassic/Cretaceous boundary. The Crassicollaria Zone, Colomi Subzone (Upper Tithonian) is composed of Calpionella alpina Lorenz, Crassicollaria colomi Doben, Crassicollaria parvula Remane, Crassicollaria massutiniana (Colom), Crassicollaria brevis Remane, Tintinnopsella remanei (Borza) and Tintinnopsella carpathica (Murgeanu and Filipescu). The Calpionella Zone, Alpina Subzone (Lower Berriasian) is indicated by the explosion of the small and globular form of Calpionella alpina dominating over very scarce Crassicollaria massutiniana. The FAD of Nannoconus wintereri can be clearly correlated with the upper part of Crassicollaria Zone and the FAD of Nannoconus kamptneri minor with the Calpionella Zone. Additional studies are necessary to establish a more detailed calpionellid biozonation and its correlation with other fossil groups. The present work confirms similar calpionellid bioevents in westernmost Tethys (Cuba and Mexico) and the Andean region, strengthening the Paleo-Pacific-Tethyan connections through the Hispanic Corridor already known from other fossil groups. © 2017 Elsevier Ltd JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_08959811_v78_n_p116_LopezMartinez
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Andean region
Calpionellid
Hispanic Corridor
Jurassic/Cretaceous boundary
Paleobiogeography
Vaca Muerta Formation
eukaryote
fossil
Jurassic-Cretaceous boundary
paleobiogeography
paleoceanography
population distribution
Tethys
Andes
Argentina
Neuquen Basin
Pacific Ocean
Pacific Ocean (East)
Codonellopsidae
spellingShingle Andean region
Calpionellid
Hispanic Corridor
Jurassic/Cretaceous boundary
Paleobiogeography
Vaca Muerta Formation
eukaryote
fossil
Jurassic-Cretaceous boundary
paleobiogeography
paleoceanography
population distribution
Tethys
Andes
Argentina
Neuquen Basin
Pacific Ocean
Pacific Ocean (East)
Codonellopsidae
López-Martínez, R.
Aguirre-Urreta, B.
Lescano, M.
Concheyro, A.
Vennari, V.
Ramos, V.A.
Tethyan calpionellids in the Neuquén Basin (Argentine Andes), their significance in defining the Jurassic/Cretaceous boundary and pathways for Tethyan-Eastern Pacific connections
topic_facet Andean region
Calpionellid
Hispanic Corridor
Jurassic/Cretaceous boundary
Paleobiogeography
Vaca Muerta Formation
eukaryote
fossil
Jurassic-Cretaceous boundary
paleobiogeography
paleoceanography
population distribution
Tethys
Andes
Argentina
Neuquen Basin
Pacific Ocean
Pacific Ocean (East)
Codonellopsidae
description The study of calpionellid distribution in the well-documented Las Loicas section of the Vaca Muerta Formation in the Neuquén Basin, Argentine Andes, allows the recognition of the upper part of the Crassicollaria Zone and the lower part of Calpionella Zone across the Jurassic/Cretaceous boundary. The Crassicollaria Zone, Colomi Subzone (Upper Tithonian) is composed of Calpionella alpina Lorenz, Crassicollaria colomi Doben, Crassicollaria parvula Remane, Crassicollaria massutiniana (Colom), Crassicollaria brevis Remane, Tintinnopsella remanei (Borza) and Tintinnopsella carpathica (Murgeanu and Filipescu). The Calpionella Zone, Alpina Subzone (Lower Berriasian) is indicated by the explosion of the small and globular form of Calpionella alpina dominating over very scarce Crassicollaria massutiniana. The FAD of Nannoconus wintereri can be clearly correlated with the upper part of Crassicollaria Zone and the FAD of Nannoconus kamptneri minor with the Calpionella Zone. Additional studies are necessary to establish a more detailed calpionellid biozonation and its correlation with other fossil groups. The present work confirms similar calpionellid bioevents in westernmost Tethys (Cuba and Mexico) and the Andean region, strengthening the Paleo-Pacific-Tethyan connections through the Hispanic Corridor already known from other fossil groups. © 2017 Elsevier Ltd
format JOUR
author López-Martínez, R.
Aguirre-Urreta, B.
Lescano, M.
Concheyro, A.
Vennari, V.
Ramos, V.A.
author_facet López-Martínez, R.
Aguirre-Urreta, B.
Lescano, M.
Concheyro, A.
Vennari, V.
Ramos, V.A.
author_sort López-Martínez, R.
title Tethyan calpionellids in the Neuquén Basin (Argentine Andes), their significance in defining the Jurassic/Cretaceous boundary and pathways for Tethyan-Eastern Pacific connections
title_short Tethyan calpionellids in the Neuquén Basin (Argentine Andes), their significance in defining the Jurassic/Cretaceous boundary and pathways for Tethyan-Eastern Pacific connections
title_full Tethyan calpionellids in the Neuquén Basin (Argentine Andes), their significance in defining the Jurassic/Cretaceous boundary and pathways for Tethyan-Eastern Pacific connections
title_fullStr Tethyan calpionellids in the Neuquén Basin (Argentine Andes), their significance in defining the Jurassic/Cretaceous boundary and pathways for Tethyan-Eastern Pacific connections
title_full_unstemmed Tethyan calpionellids in the Neuquén Basin (Argentine Andes), their significance in defining the Jurassic/Cretaceous boundary and pathways for Tethyan-Eastern Pacific connections
title_sort tethyan calpionellids in the neuquén basin (argentine andes), their significance in defining the jurassic/cretaceous boundary and pathways for tethyan-eastern pacific connections
url http://hdl.handle.net/20.500.12110/paper_08959811_v78_n_p116_LopezMartinez
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AT aguirreurretab tethyancalpionellidsintheneuquenbasinargentineandestheirsignificanceindefiningthejurassiccretaceousboundaryandpathwaysfortethyaneasternpacificconnections
AT lescanom tethyancalpionellidsintheneuquenbasinargentineandestheirsignificanceindefiningthejurassiccretaceousboundaryandpathwaysfortethyaneasternpacificconnections
AT concheyroa tethyancalpionellidsintheneuquenbasinargentineandestheirsignificanceindefiningthejurassiccretaceousboundaryandpathwaysfortethyaneasternpacificconnections
AT vennariv tethyancalpionellidsintheneuquenbasinargentineandestheirsignificanceindefiningthejurassiccretaceousboundaryandpathwaysfortethyaneasternpacificconnections
AT ramosva tethyancalpionellidsintheneuquenbasinargentineandestheirsignificanceindefiningthejurassiccretaceousboundaryandpathwaysfortethyaneasternpacificconnections
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