Facies sedimentarias en lagos de alta montaña del Pirineo central durante el Holoceno tardío: tipología e interpretación deposicional

  1. A. Vicente de Vera 1
  2. M. Leunda 2
  3. O. Sociats 3
  4. M.P. Mata-Campo 4
  5. B.L. Valero-Garcés 1
  1. 1 Instituto Pirenaico de Ecología
    info

    Instituto Pirenaico de Ecología

    Zaragoza, España

    ROR https://ror.org/039ssy097

  2. 2 University of Bern.
  3. 3 Universitat de Barcelona
    info

    Universitat de Barcelona

    Barcelona, España

    ROR https://ror.org/021018s57

  4. 4 Instituto Geológico y Minero de España
    info

    Instituto Geológico y Minero de España

    Madrid, España

    ROR https://ror.org/04cadha73

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Revista:
Geotemas (Madrid)

ISSN: 1576-5172

Año de publicación: 2021

Título del ejemplar: X Congreso Geológico de España

Número: 18

Páginas: 1037

Tipo: Artículo

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Otras publicaciones en: Geotemas (Madrid)

Resumen

In this work, sediments deposited during the late Holocene in several high mountain of the Aragonese Pyrenees are characteri- zed sedimentologically and geochemically, from west to east: Acherito, La Sierra, Sabocos, Marboré, Urdiceto and Cregueña, all of them between 1870 and 2630 masl, and located in basins with different geology, siliceous (Vicente de Vera, 2017; Sociats, 2018) and carbonated (Leunda, 2019). The sedimentary facies have been characterized through a multidisciplinary analysis including sedimentological techniques (granulometry, textures, color, composition, and thin sections), elementary geochemis- try (ICP) and XRF scanner of gravity cores recovered in the deepest areas of the lake. Sedimentation rates and age models have been obtained using 210 Pb, 137Cs and 14C. Facies analysis allows the reconstruction of the evolution of sediment transport processes from the basin and production of organic matter in the lake during the last 2000 years. The sedimentary sequences show changes associated with climatic periods and human activity (mining, hydroelectric exploitation).

Fuente de los datos: Dialnet