Magnetostratigraphy of the Maastrichtian continental record in the Upper Aude Valley (northern Pyrenees, France): Placing age constraints on the succession of dinosaur-bearing sites

Víctor Fondevilla, Jaume Dinarès-Turell, Bernat Vila, Jean Le Loeuff, Rita Estrada, Oriol Oms, Àngel Galobart

Research output: Contribution to journalArticleResearchpeer-review

16 Citations (Scopus)

Abstract

© 2015 Elsevier Ltd. 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.
Original languageEnglish
Pages (from-to)457-472
JournalCretaceous Research
Volume57
DOIs
Publication statusPublished - 1 Jan 2016

Keywords

  • Bellevue
  • Dinosaurs
  • France
  • Maastrichtian
  • Magnetostratigraphy
  • Pyrenees

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