title: Chronology for the Cueva Victoria fossil site (SE Spain): Evidence for Early Pleistocene Afro-Iberian dispersals.
abstract: Cueva Victoria has provided remains of more than 90 species of fossil vertebrates, including a hominin phalanx, and the only specimens of the African cercopithecid Theropithecus oswaldi in Europe. To constrain the age of the vertebrate remains we used paleomagnetism, vertebrate biostratigraphy and (230)Th/U dating. Normal polarity was identified in the non-fossiliferous lowest and highest stratigraphic units (red clay and capping flowstones) while reverse polarity was found in the intermediate stratigraphic unit (fossiliferous breccia). A lower polarity change occurred during the deposition of the decalcification clay, when the cave was closed and karstification was active. A second polarity change occurred during the capping flowstone formation, when the upper galleries were filled with breccia. The mammal association indicates a post-Jaramillo age, which allows us to correlate this upper reversal with the Brunhes-Matuyama boundary (0.78 Ma). Consequently, the lower reversal (N-R) is interpreted as the end of the Jaramillo magnetochron (0.99 Ma). These ages bracket the age of the fossiliferous breccia between 0.99 and 0.78 Ma, suggesting that the capping flowstone was formed during the wet Marine Isotopic Stage 19, which includes the Brunhes-Matuyama boundary. Fossil remains of Theropithecus have been only found in situ ∼1 m below the B/M boundary, which allows us to place the arrival of Theropithecus to Cueva Victoria at ∼0.9-0.85 Ma. The fauna of Cueva Victoria lived during a period of important climatic change, known as the Early-Middle Pleistocene Climatic Transition. The occurrence of the oldest European Acheulean tools at the contemporaneous nearby site of Cueva Negra suggest an African dispersal into SE Iberia through the Strait of Gibraltar during MIS 22, when sea-level was ∼100 m below its present position, allowing the passage into Europe of, at least, Theropithecus and Homo bearing Acheulean technology.
authors.affiliation: Departament de Geoquímica, Petrologia i Prospecció Geològica, Universitat de Barcelona, C/Martí i Franqués s/n, 08028 Barcelona, Spain. Electronic address: lgibert@ub.edu.
authors.forename: Luis
authors.initials: L
authors.lastname: Gibert
authors.affiliation: Berkeley Geochronology Center, 2455 Ridge Road Berkeley, California 94709, USA.
authors.forename: Gary R
authors.initials: GR
authors.lastname: Scott
authors.affiliation: Institute for Geosciences, University of Mainz, Johann-Joachim-Becher-Weg 21, 55128 Mainz, Germany.
authors.forename: Denis
authors.initials: D
authors.lastname: Scholz
authors.affiliation: Institute for Geosciences, University of Mainz, Johann-Joachim-Becher-Weg 21, 55128 Mainz, Germany; Biogeochemistry Department, Max Planck Institute for Chemistry, P. O. Box 3060, 55020 Mainz, Germany.
authors.forename: Alexander
authors.initials: A
authors.lastname: Budsky
authors.affiliation: Departament d'Estratigrafia, Paleontologia i Geociències Marines, Universitat de Barcelona, C/Martí i Franqués s/n, 08028 Barcelona, Spain.
authors.forename: Carles
authors.initials: C
authors.lastname: Ferràndez
authors.affiliation: Museo de Prehistoria y Paleontología Josep Gibert, 18858 Orce, Spain.
authors.forename: Francesc
authors.initials: F
authors.lastname: Ribot
authors.affiliation: Department of Biological Sciences, Murray State University, Murray, KY 42071, USA.
authors.forename: Robert A
authors.initials: RA
authors.lastname: Martin
authors.affiliation: Departament de Dibuix, Universitat de Barcelona, C/Pau Margallo, 4, 08028 Barcelona, Spain.
authors.forename: María
authors.initials: M
authors.lastname: Lería
mesh_terms: D000352:Africa, Northern; D025041:Animal Migration; D000818:Animals; D005075:Biological Evolution; D059552:Caves; D005580:Fossils; D015186:Hominidae / Q000502:physiology*; D008322:Mammals / Q000502:physiology; D013030:Spain; D016671:Theropithecus / Q000502:physiology*
keywords: (230)Th/U dating; Afro-Iberian dispersal; Early humans; MIS 22; Magnetostratigraphy; Theropithecus