Interhemispheric radio-astrochronological calibration of the time scales from the Andean and the Tethyan areas in the Valanginian–Hauterivian (Early Cretaceous)

An integrated radio-astrochronological framework of the Agrio Formation in the Andean Neuquén Basin of west-central Argentina provides new constraints on the age and the duration of the late Valanginian through Hauterivian stratigraphic interval. A CA-ID TIMS U-Pb age of 126.97 ± 0.04(0.07)[0.15] Ma...

Descripción completa

Guardado en:
Detalles Bibliográficos
Publicado: 2019
Materias:
Biostratigraphy
Cyclostratigraphy
Geochronology
Neuquén Basin
Tethys
Western Gondwana
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1342937X_v70_n_p104_AguirreUrreta
http://hdl.handle.net/20.500.12110/paper_1342937X_v70_n_p104_AguirreUrreta
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_1342937X_v70_n_p104_AguirreUrreta
record_format dspace
spelling paper:paper_1342937X_v70_n_p104_AguirreUrreta2023-06-08T16:10:36Z Interhemispheric radio-astrochronological calibration of the time scales from the Andean and the Tethyan areas in the Valanginian–Hauterivian (Early Cretaceous) Biostratigraphy Cyclostratigraphy Geochronology Neuquén Basin Tethys Western Gondwana An integrated radio-astrochronological framework of the Agrio Formation in the Andean Neuquén Basin of west-central Argentina provides new constraints on the age and the duration of the late Valanginian through Hauterivian stratigraphic interval. A CA-ID TIMS U-Pb age of 126.97 ± 0.04(0.07)[0.15] Ma is presented here from the upper Hauterivian Agua de la Mula Member of the Agrio Formation. Biostratigraphic data from ammonoids and calcareous nannofossils and this high precision new radioisotopic age, together with three former ones from the same Agrio Formation are combined with new astrochronological data in the Andes. These are correlated with modern cyclostratigraphic studies in the classical sections of the Mediterranean Province of the Tethys, supporting detailed interhemispheric correlations for the Early Cretaceous. We also provide new δ 13 C data from the Agrio Formation which are compared with records from the classic Tethyan sections. According to our calibration, the minimum in the values in the mid-Hauterivian appears to be synchronous and, thus, another important stratigraphic marker for global correlation. A new duration of 5.21 ± 0.08 myr is calculated for the Hauterivian Stage, starting at 131.29 ± 0.19 Ma and ending at 126.08 ± 0.19 Ma. The difference between the duration of the Hauterivian in GTS2016 and in this study is 1.32 myr while the base and top of the GTS2016 Hauterivian differ respectively by 3.40 and 4.69 myr. © 2019 International Association for Gondwana Research 2019 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1342937X_v70_n_p104_AguirreUrreta http://hdl.handle.net/20.500.12110/paper_1342937X_v70_n_p104_AguirreUrreta
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Biostratigraphy
Cyclostratigraphy
Geochronology
Neuquén Basin
Tethys
Western Gondwana
spellingShingle Biostratigraphy
Cyclostratigraphy
Geochronology
Neuquén Basin
Tethys
Western Gondwana
Interhemispheric radio-astrochronological calibration of the time scales from the Andean and the Tethyan areas in the Valanginian–Hauterivian (Early Cretaceous)
topic_facet Biostratigraphy
Cyclostratigraphy
Geochronology
Neuquén Basin
Tethys
Western Gondwana
description An integrated radio-astrochronological framework of the Agrio Formation in the Andean Neuquén Basin of west-central Argentina provides new constraints on the age and the duration of the late Valanginian through Hauterivian stratigraphic interval. A CA-ID TIMS U-Pb age of 126.97 ± 0.04(0.07)[0.15] Ma is presented here from the upper Hauterivian Agua de la Mula Member of the Agrio Formation. Biostratigraphic data from ammonoids and calcareous nannofossils and this high precision new radioisotopic age, together with three former ones from the same Agrio Formation are combined with new astrochronological data in the Andes. These are correlated with modern cyclostratigraphic studies in the classical sections of the Mediterranean Province of the Tethys, supporting detailed interhemispheric correlations for the Early Cretaceous. We also provide new δ 13 C data from the Agrio Formation which are compared with records from the classic Tethyan sections. According to our calibration, the minimum in the values in the mid-Hauterivian appears to be synchronous and, thus, another important stratigraphic marker for global correlation. A new duration of 5.21 ± 0.08 myr is calculated for the Hauterivian Stage, starting at 131.29 ± 0.19 Ma and ending at 126.08 ± 0.19 Ma. The difference between the duration of the Hauterivian in GTS2016 and in this study is 1.32 myr while the base and top of the GTS2016 Hauterivian differ respectively by 3.40 and 4.69 myr. © 2019 International Association for Gondwana Research
title Interhemispheric radio-astrochronological calibration of the time scales from the Andean and the Tethyan areas in the Valanginian–Hauterivian (Early Cretaceous)
title_short Interhemispheric radio-astrochronological calibration of the time scales from the Andean and the Tethyan areas in the Valanginian–Hauterivian (Early Cretaceous)
title_full Interhemispheric radio-astrochronological calibration of the time scales from the Andean and the Tethyan areas in the Valanginian–Hauterivian (Early Cretaceous)
title_fullStr Interhemispheric radio-astrochronological calibration of the time scales from the Andean and the Tethyan areas in the Valanginian–Hauterivian (Early Cretaceous)
title_full_unstemmed Interhemispheric radio-astrochronological calibration of the time scales from the Andean and the Tethyan areas in the Valanginian–Hauterivian (Early Cretaceous)
title_sort interhemispheric radio-astrochronological calibration of the time scales from the andean and the tethyan areas in the valanginian–hauterivian (early cretaceous)
publishDate 2019
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1342937X_v70_n_p104_AguirreUrreta
http://hdl.handle.net/20.500.12110/paper_1342937X_v70_n_p104_AguirreUrreta
_version_ 1768545203654754304

Ejemplares similares