Geoquímica orgánica del registro de la ría Villaviciosa desde 1400 AD (Norte de España)

  1. J.E. Ortiz 1
  2. Y. Sánchez-Palencia 1
  3. Á.G. Borrego 2
  4. J.L. R. Gallego 3
  5. T. de Torres 1
  1. 1 Universidad Politécnica de Madrid, España
  2. 2 Instituto Nacional del Carbón, España
  3. 3 Universidad de Oviedo, España
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Journal:
Geogaceta

ISSN: 0213-683X

Year of publication: 2016

Issue Title: Comunicaciones presentadas en la LX Sesión Científica / Barcelona, 20 de Mayo de 2016

Issue: 60

Pages: 59-62

Type: Article

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Abstract

We have reconstructed the palaeoenvironmental conditions in the Villaviciosa estuary during the last 600 yrs, from the biomarker content (alkanes and alkanoic acids) of the sediment. The amino acid racemization method in ostracodes allowed determining that the sedimentation in the Selorio bay started in 1400 AD. Organic matter was well preserved, although certain microbial activity was interpreted. Three periods were established from the alkane content: 1.- Between 1400 and 1580 AD terrestrial input was dominant; 2.- Between 1580 and 1720 AD there was a major influence of aquatic macrophytes, coinciding with the Little Ice Age, 3.- Between 1720 and 2015 AD there were alternating periods during which land plants or aquatic macrophytes predominated, probably linked to anthropogenic activities.

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