High-precision U-Pb ages in the early Tithonian to early Berriasian and implications for the numerical age of the Jurassic-Cretaceous boundary
The numerical age of the Jurassic-Cretaceous boundary has been controversial and difficult to determine. In this study, we present high-precision U-Pb geochronological data around the Jurassic-Cretaceous boundary in two distinct sections from different sedimentary basins: the Las Loicas, Neuquén Bas...
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todo:paper_18699510_v10_n1_p1_Lena2023-10-03T16:33:52Z High-precision U-Pb ages in the early Tithonian to early Berriasian and implications for the numerical age of the Jurassic-Cretaceous boundary Lena, L. López-Martínez, R. Lescano, M. Aguirre-Urrreta, B. Concheyro, A. Vennari, V. Naipauer, M. Samankassou, E. Pimentel, M. Ramos, V.A. Schaltegger, U. Binary alloys Geochronology Lead alloys Volcanoes Age determination Cross check High-precision Jurassic-Cretaceous boundary Sedimentary basin Two section U-Pb ages Volcanic ash Uranium alloys age determination geochronology Jurassic-Cretaceous boundary radionuclide sedimentary basin uranium-lead dating Argentina Mexico [North America] Neuquen Basin Sierra Madre Oriental Sierra Madre [Mexico] The numerical age of the Jurassic-Cretaceous boundary has been controversial and difficult to determine. In this study, we present high-precision U-Pb geochronological data around the Jurassic-Cretaceous boundary in two distinct sections from different sedimentary basins: the Las Loicas, Neuquén Basin, Argentina, and the Mazatepec, Sierra Madre Oriental, Mexico. These two sections contain primary and secondary fossiliferous markers for the boundary as well as interbedded volcanic ash horizons, allowing researchers to obtain new radioisotopic dates in the late Tithonian and early Berriasian. We also present the first age determinations in the early Tithonian and tentatively propose a minimum duration for the stage as a cross-check for our ages in the early Berriasian. Given our radioisotopic ages in the early Tithonian to early Berriasian, we discuss implications for the numerical age of the boundary. © Author(s) 2019.All Rights Reserved. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_18699510_v10_n1_p1_Lena |
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Universidad de Buenos Aires |
| institution_str |
I-28 |
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R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Binary alloys Geochronology Lead alloys Volcanoes Age determination Cross check High-precision Jurassic-Cretaceous boundary Sedimentary basin Two section U-Pb ages Volcanic ash Uranium alloys age determination geochronology Jurassic-Cretaceous boundary radionuclide sedimentary basin uranium-lead dating Argentina Mexico [North America] Neuquen Basin Sierra Madre Oriental Sierra Madre [Mexico] |
| spellingShingle |
Binary alloys Geochronology Lead alloys Volcanoes Age determination Cross check High-precision Jurassic-Cretaceous boundary Sedimentary basin Two section U-Pb ages Volcanic ash Uranium alloys age determination geochronology Jurassic-Cretaceous boundary radionuclide sedimentary basin uranium-lead dating Argentina Mexico [North America] Neuquen Basin Sierra Madre Oriental Sierra Madre [Mexico] Lena, L. López-Martínez, R. Lescano, M. Aguirre-Urrreta, B. Concheyro, A. Vennari, V. Naipauer, M. Samankassou, E. Pimentel, M. Ramos, V.A. Schaltegger, U. High-precision U-Pb ages in the early Tithonian to early Berriasian and implications for the numerical age of the Jurassic-Cretaceous boundary |
| topic_facet |
Binary alloys Geochronology Lead alloys Volcanoes Age determination Cross check High-precision Jurassic-Cretaceous boundary Sedimentary basin Two section U-Pb ages Volcanic ash Uranium alloys age determination geochronology Jurassic-Cretaceous boundary radionuclide sedimentary basin uranium-lead dating Argentina Mexico [North America] Neuquen Basin Sierra Madre Oriental Sierra Madre [Mexico] |
| description |
The numerical age of the Jurassic-Cretaceous boundary has been controversial and difficult to determine. In this study, we present high-precision U-Pb geochronological data around the Jurassic-Cretaceous boundary in two distinct sections from different sedimentary basins: the Las Loicas, Neuquén Basin, Argentina, and the Mazatepec, Sierra Madre Oriental, Mexico. These two sections contain primary and secondary fossiliferous markers for the boundary as well as interbedded volcanic ash horizons, allowing researchers to obtain new radioisotopic dates in the late Tithonian and early Berriasian. We also present the first age determinations in the early Tithonian and tentatively propose a minimum duration for the stage as a cross-check for our ages in the early Berriasian. Given our radioisotopic ages in the early Tithonian to early Berriasian, we discuss implications for the numerical age of the boundary. © Author(s) 2019.All Rights Reserved. |
| format |
JOUR |
| author |
Lena, L. López-Martínez, R. Lescano, M. Aguirre-Urrreta, B. Concheyro, A. Vennari, V. Naipauer, M. Samankassou, E. Pimentel, M. Ramos, V.A. Schaltegger, U. |
| author_facet |
Lena, L. López-Martínez, R. Lescano, M. Aguirre-Urrreta, B. Concheyro, A. Vennari, V. Naipauer, M. Samankassou, E. Pimentel, M. Ramos, V.A. Schaltegger, U. |
| author_sort |
Lena, L. |
| title |
High-precision U-Pb ages in the early Tithonian to early Berriasian and implications for the numerical age of the Jurassic-Cretaceous boundary |
| title_short |
High-precision U-Pb ages in the early Tithonian to early Berriasian and implications for the numerical age of the Jurassic-Cretaceous boundary |
| title_full |
High-precision U-Pb ages in the early Tithonian to early Berriasian and implications for the numerical age of the Jurassic-Cretaceous boundary |
| title_fullStr |
High-precision U-Pb ages in the early Tithonian to early Berriasian and implications for the numerical age of the Jurassic-Cretaceous boundary |
| title_full_unstemmed |
High-precision U-Pb ages in the early Tithonian to early Berriasian and implications for the numerical age of the Jurassic-Cretaceous boundary |
| title_sort |
high-precision u-pb ages in the early tithonian to early berriasian and implications for the numerical age of the jurassic-cretaceous boundary |
| url |
http://hdl.handle.net/20.500.12110/paper_18699510_v10_n1_p1_Lena |
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