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- Title
Insights on the climatic evolution at the pre-Jaramillo to Jaramillo transition in Europe using mineralogical analysis of the Quibas palaeontological site (Early Pleistocene, southern Iberian Peninsula).
- Authors
DEL CASTILLO, Elia; ALÍAS LINARES, María Asunción; LABORDA-LÓPEZ, Casto; IANNICELLI, Claudia; PAL, Shubham; AGUSTÍ, Jordi; PIÑERO, Pedro
- Abstract
The palaeontological site of Quibas is a karst outcrop with an age between 1.1 and 0.9 Ma (late Early Pleistocene). It represents the unique continuous sequence of terrestrial vertebrates of pre-Jaramillo to Jaramillo age in Europe. It is formed by two main structures: Quibas-Sima (divided into units QS-1 to QS-7) and Quibas-Cueva (QC-1-QC-6). In this work, we analyse the mineralogical composition of the sediments that form the stratigraphic units of Quibas-Sima using X-ray diffraction analysis, electrical conductivity, ion chromatography and optical emission spectrometry, to evaluate climatic trends in the sequence. Preliminary results indicate that there is an increase in the proportions of carbonates, gypsum and halite from QS-2 towards QS-4 and QS-5 (1.07-0.99 Ma), suggesting a progressive decrease in precipitation in south-eastern Iberian Peninsula a million years ago. Our data are consistent with the onset of a glacial phase, which is supported by the progressive disappearance of taxa related to forests and water bodies in Quibas-Sima, such as the flying squirrel Hylopetes sp. and the semiaquatic shrew Neomys sp., in favour of the appearance of taxa linked to open areas such as the Montpellier snake (Malpolon monspessulanus) and the snub-nosed viper (Vipera latastei).
- Subjects
IBERIAN Peninsula; MINERALOGICAL research; PALEONTOLOGY; OUTCROPS (Geology); KARST; ELECTRICAL conductivity measurement
- Publication
Spanish Journal of Palaeontology, 2023, Vol 38, Issue 2, p255
- ISSN
2255-0550
- Publication type
Article
- DOI
10.7203/sjp.27562