Identificación de episodios climáticos fríos mediante el registro de susceptibilidad magnética en la secuencia lacustre del maar del Fuentillejo (Ciudad Real)

  1. L. Galán 1
  2. J. Vegas 1
  3. J.L. Gallardo-Millán 2
  4. M.B. Ruiz-Zapata 3
  5. M.J. Gil-García 3
  6. J.E. Ortiz 4
  7. L. Moreno 4
  8. A. García-Cortés 1
  9. T. Torres 4
  1. 1 Instituto Geológico y Minero de España
    info

    Instituto Geológico y Minero de España

    Madrid, España

    ROR https://ror.org/04cadha73

  2. 2 Universidad de Castilla-La Mancha
    info

    Universidad de Castilla-La Mancha

    Ciudad Real, España

    ROR https://ror.org/05r78ng12

  3. 3 Universidad de Alcalá
    info

    Universidad de Alcalá

    Alcalá de Henares, España

    ROR https://ror.org/04pmn0e78

  4. 4 ETSI de Minas. Universidad Politécnica de Madrid
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Journal:
Geotemas (Madrid)

ISSN: 1576-5172

Year of publication: 2012

Issue Title: VIII Congreso Geológico de España, Oviedo, 17-19 de julio, 2012.

Issue: 13

Pages: 699-702

Type: Article

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More publications in: Geotemas (Madrid)

Abstract

The Fuentillejo maar is located in the Central Spanish Volcanic Field of Campo de Calatrava (Ciudad Real). Fuentillejo maar-lake was a closed system where up to 142 m depth of lacustrine sediments were deposited. Magnetic susceptibility and bulk density were measured by a GEOTEK multisensor core logger. The chronological framework was constructed based on radiocarbon and U-Th methods, as well as a detailed study of magnetic polarity, yielding an age model that covers last 350 ka. Intervals with terrigenous sediments correspond to high magnetic susceptibility values. These intervals were correlated with erosive events during the Last Glacial Maximum and the MIS 6 and 8 isotopic stages. The record of magnetic susceptibility is attenuated by disolution processes of Fe-Ti oxides.

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