Articles | Volume 10, issue 1
https://doi.org/10.5194/se-10-1-2019
https://doi.org/10.5194/se-10-1-2019
Research article
 | 
08 Jan 2019
Research article |  | 08 Jan 2019

High-precision U–Pb ages in the early Tithonian to early Berriasian and implications for the numerical age of the Jurassic–Cretaceous boundary

Luis Lena, Rafael López-Martínez, Marina Lescano, Beatriz Aguire-Urreta, Andrea Concheyro, Verónica Vennari, Maximiliano Naipauer, Elias Samankassou, Márcio Pimentel, Victor A. Ramos, and Urs Schaltegger

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Cited articles

Aguirre-Urreta, B., Rawson, P. F., Concheyro, G. A., Bown, P. R., and Ottone, E. G.: Lower Cretaceous (Berriasian-Aptian) biostratigraphy of the Neuquén Basin, Argentina, Geol. Soc. Sp., 252, 57–81, doi.org/10.1144/GSL.SP.2005.252.01.04, 2005. 
Aguirre-Urreta, B., Vennari, V. V., Lescano, M., Naipauer, M., Concheyro, A., and Ramos, V. A.: Bioestratigrafía y geocronología de alta resolución de la Formación Vaca Muerta, cuenca Neuquina. IX Congreso de Exploración y Desarrollo de Hidrocarburos (Mendoza), Trabajos Técnicos II, 245–268, 2014. 
Aguirre-Urreta, B., Lescano, M., Schmitz, M. D., Tunik, M., Concheyro, A., Rawson, P. F., and Ramos, V. A.: Filling the gap: new precise Early Cretaceous radioisotopic ages from the Andes, Geol. Mag., 152, 557–564, https://doi.org/10.1017/S001675681400082X, 2015. 
Aguirre-Urreta, B., Schmitz, M., Lescano, M., Tunik, M., Rawson, P. F., Concheyro, A., Buhler, M., and Ramos, V. A.: A high precision U–Pb radioisotopic age for the Agrio Formation, Neuquén Basin, Argentina: Implications for the chronology of the Hauterivian Stage, Cretac. Res., 75, 193–204, https://doi.org/10.1016/j.cretres.2017.03.027, 2017. 
Bakhmutov, V. G., Halásová, E., Ivanova, D. K., Józsa, Š., Reháková, D., and Wimbledon, W. A. P.: Biostratigraphy and magnetostratigraphy of the uppermost Tithonian–lower Berriasian in the Theodosia area of Crimea (Southern Ukraine), Geol. Q., 62, 197–236, https://doi.org/10.7306/gq.1404, 2018. 
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Short summary
This paper investigates the numerical age of the J–K boundary that remains one of the last main Phanerozoic system boundaries without an adequate constraint by adequate radioisotopic ages. Here we find that there is potentially 4 Myr of difference between the current age of the J–K boundary and our data.