El registro sedimentario antropoceno en la Ría del Nalón (Asturias)impacto histórico de la minería de carbón y mercurio

  1. J. Gardoki 1
  2. A. Cearreta 1
  3. A. García-Artola 1
  4. M.J. Irabien 1
  5. J.E. Gómez-Arozamena 2
  6. V. Villasante-Marcos 3
  1. 1 Universidad del País Vasco (UPV/EHU)
  2. 2 Universidad de Cantabria
    info

    Universidad de Cantabria

    Santander, España

    ROR https://ror.org/046ffzj20

  3. 3 Instituto Geográfico Nacional
    info

    Instituto Geográfico Nacional

    Madrid, España

    ROR https://ror.org/03yycdv57

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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: 1007

Tipo: Artículo

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Otras publicaciones en: Geotemas (Madrid)

Resumen

The recent sedimentary record of the Nalón estuary (Asturias) is characterized by a relevant anthropogenic imprint, deri- ved from the historical extraction of coal and mercury, particularly since 1850 (García-Ordiales et al., 2017; 2018; 2020). Nevertheless, the microfaunal response to environmental stress provoked by the anthropic pollution in this estuary remains unstudied. This work focuses on the multidisciplinary analysis (benthic foraminifera, sedimentology, geochemistry and envi- ronmental magnetism) of two 50-cm long intertidal cores drilled in the middle estuary that were dated by short-lived radioi- sotopes. The multidisciplinary study of its sedimentary record and the establishment of an accurate chronology have allowed a reconstruction of the environmental transformation of the estuary during the last 200 years as a consequence of the mining activity in its watershed.

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