TY  - JOUR
A1  - Caus, Esmeralda
A1  - Frijia, Gianluca
A1  - Parente, Mariano
A1  - Robles-Salcedo, Raquel
A1  - Villalonga, Raquel
T1  - Constraining the age of the last marine sediments in the late Cretaceous of central south Pyrenees (NE Spain): Insights from larger benthic foraminifera and strontium isotope stratigraphy
JF  - Cretaceous research
N2  - The uppermost Cretaceous (upper Campanian-Maastrichtian) marine deposits of the central south Pyrenees host a rich larger benthic foraminiferal fauna and several rudist-rich levels. These marine deposits are directly overlain by the continental facies of the Aren and Tremp Formations, which are famous for their fossil dinosaur remains. Larger benthic foraminiferal distribution documents an important faunal turnover in all the carbonate platform environments within the photic zone, from open marine to littoral areas. Biostratigraphy indicates that this turnover occurred close to the Campanian-Maastrichtian boundary. This is also confirmed by strontium isotope stratigraphy which indicates an earliest Maastrichtian age for the appearance of the larger benthic foraminiferal assemblage constituted by Lepidorbitoides socialis, Clypeorbis mammillata, Wannierina cataluniensis, Orbitoides gruenbachensis, Siderolites aff. calcitrapoides, Fascispira colomi, Omphalocyclus macroporus and Laffiteina mengaudi. In particular, a numerical age of 71 Ma is obtained for the Hippurites radiosus level, just a few meters below the first continental deposits of the Aren sensu stricto Formation. The youngest marine sediments of the central south Pyrenees are early Maastrichtian in age. This is also an important constraint for the age of the end-Cretaceous dinosaur fossil localities of the Tremp basin. (C) 2015 Elsevier Ltd. All rights reserved.
KW  - Larger benthic foraminifera
KW  - Strontium isotope stratigraphy
KW  - Late Cretaceous
KW  - Campanian-Maastrichtian boundary
KW  - Tremp basin
KW  - Pyrenees
KW  - NE Spain
Y1  - 2016
U6  - https://doi.org/10.1016/j.cretres.2015.05.012
SN  - 0195-6671
SN  - 1095-998X
VL  - 57
SP  - 402
EP  - 413
PB  - Elsevier
CY  - London
ER  -