Magnetostratigraphy of the Maastrichtian continental record in the Upper Aude Valley (northern Pyrenees,France): Placing age constraints on the succession of dinosaur-bearing sites |
| |
| Institution: | 1. Departament de Geologia (Estratigrafia), Facultat de Ciències, Universitat Autònoma de Barcelona, Carrer de l''Eix central, E-08193 Cerdanyola del Vallès, Barcelona, Catalonia, Spain;2. Istituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata, 605, I-00143 Rome, Italy;3. Grupo Aragosaurus–IUCA, Paleontología, Facultad de Ciencias Universidad de Zaragoza, E-50009 Zaragoza, Spain;4. Musée des Dinosaures, 11260 Espéraza, France;5. Institut Català de Paleontologia Miquel Crusafont, Carrer Escola Industrial, 23, E-08201, Sabadell, Barcelona, Catalonia, Spain;1. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción – Consejo Nacional de Investigaciones Científicas y Técnicas (CICYTTP–CONICET), Dr. Matteri y España SN, E3105BWA Diamante, Entre Ríos, Argentina;2. División Paleozoología Invertebrados, Museo de La Plata, Paseo del Bosque SN, B1900FWA La Plata, Argentina;1. Laboratório de Sistemática e Tafonomia de Vertebrados Fósseis, Departamento de Geologia e Paleontologia, Museu Nacional/Universidade Federal do Rio de Janeiro (UFRJ), Quinta da Boa Vista, s/n, São Cristóvão, 20940-040 Rio de Janeiro, RJ, Brazil;2. Universidade Estácio de Sá, Rua André Rocha, 838, Taquara, 22710-560 Rio de Janeiro, RJ, Brazil;3. Museu de Ciências da Terra, Serviço Geológico do Brasil – CPRM, Av. Pasteur 404, Urca, 22290-255 Rio de Janeiro, RJ, Brazil;1. Institut Català de Paleontologia Miquel Crusafont, Carrer de l''Escola industrial 23, 08201, Sabadell, Spain;2. Museu de la Conca Dellà, Carrer del Museu, 4, 25650, Isona, Spain;3. Paul Sabatier University-Toulouse III, 118 Route de Narbonne, 31062, Toulouse, France;1. Institut Català de Paleontologia, Universitat Autònoma de Barcelona, Escola Industrial 23, 08201, Sabadell, Spain;2. School of Earth Sciences, University of Bristol, Life Sciences Building, 24 Tyndall Avenue, Bristol BS8 1TQ, UK;3. Transmitting Science, Gardenia 2, 08784, Can Claramunt, Piera, Barcelona, Spain |
| |
| Abstract: | The first detailed stratigraphic succession of the Upper Cretaceous continental record from the Upper Aude Valley (southern France) is presented together with a magnetostratigraphic study. The combined stratigraphy and magnetostratigraphy of the Marnes rouges inférieures Fm (Lower Red Marls), constrained by biochronological markers such as charophyte occurrence and revised dinosaur eggshells, results in a succession of fluvial red beds dated from chron C32n to the top of chron C31r. It implies an earliest Maastrichtian age close to the C32n.1n-C31r reversal for the majority of the dinosaur sites including Bellevue. In contrast, the upper Maastrichtian is likely represented by a short interval within the lacustrine-palustrine Calcaires et argiles de Vignevieille Fm (Vignevieille Limestones), or it might even not be recorded. The proposed age indicates that the marine to continental transition, as a result of the Late Cretaceous transgression, took place earlier in the north Pyrenean basin than in the southern area. |
| |
| Keywords: | Dinosaurs Magnetostratigraphy Maastrichtian Bellevue Pyrenees France |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
