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Climate of the Past An interactive open-access journal of the European Geosciences Union
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Discussion papers
https://doi.org/10.5194/cpd-11-3897-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/cpd-11-3897-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 26 Aug 2015

Research article | 26 Aug 2015

Review status
This discussion paper is a preprint. It has been under review for the journal Climate of the Past (CP). The manuscript was not accepted for further review after discussion.

The MIS 5 palaeoenvironmental record in the SE Mediterranean coast of the Iberian Peninsula (Río Antas, Almería, Spain)

T. Torres1, J. E. Ortiz1, A. M. Blázquez2, B. Ruiz Zapata3, M. J. Gil3, T. Martín3, and Y. Sánchez-Palencia1 T. Torres et al.
  • 1Laboratory of Biomolecular Stratigraphy, E.T.S.I. Minas y Energía, Universidad Politécnica de Madrid, C/ Ríos Rosas 21, Madrid 28003, Spain
  • 2Environmental and Marine Sciences Research Institute, Catholic University of Valencia C/Guillem de Castro 94, 46003 Valencia, Spain
  • 3Dpto. Geología, Facultad Ciencias, Universidad Alcalá de Henares, Campus Universitario, Universidad Alcalá, 28871 Alcalá de Henares, Madrid, Spain

Abstract. Landwards of a MIS5 bar, a borehole core (SRA) was analyzed to establish the relationship between the lagoonal record and the raised beach deposits in the surroundings of the Antas river mouth and to reconstruct the Pleistocene palaeoenvironmental evolution of the southern Mediterranean coast of the Iberian Peninsula. 63 samples were recovered for amino acid racemization dating, 86 samples for sedimentological and paleontological determination, 37 samples for pollen identification and 54 for biomarker analysis. AAR revealed that the borehole record contains MIS11, MIS6 and MIS5 deposits, the latter extensively represented. During the end of MIS6 and MIS5, a sand barrier developed and created a shallow lagoon with alternating terrestrial inputs this process being common in other Mediterranean realms. Litho- and biofacies allowed the identification of distinct paleoenvironments through time, with the presence of a lagoonal environment alternating with alluvial fan progradation. Biomarkers indicated constant input from terrestrial plants, together with variable development of aquatic macrophytes. The palynological content allowed the reconstruction of the paleoclimatological conditions during MIS6 and 5, with evidence of seven scenarios characterized by alternating arid and relatively humid conditions.

T. Torres et al.
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T. Torres et al.
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Short summary
Borehole SRA and the raised beach deposits in the surroundings of the Antas river mouth allowed to reconstruct the Pleistocene palaeoenvironmental evolution of the southern Mediterranean coast of the Iberian Peninsula. The record contains MIS11, MIS6 and MIS5 deposits the latter extensively represented: a sand barrier developed, creating a shallow lagoon with alternating alluvial fan progradation, with evidence of seven scenarios characterized by alternating arid and relatively humid conditions
Borehole SRA and the raised beach deposits in the surroundings of the Antas river mouth allowed...
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