Resumen de Influencia antropogénica en el registro sedimentario de la Ria de Muros (NO de España)
Belén Rubio Armesto, Paula Álvarez Iglesias, Alba Andrade Grande, Daniel Rey García, Ana M. Bernabeu Tello, Begoña Quintana Arnés, Ángel Enrique López Pérez
Based on textural analyses, solid phase geochemistry and Pb-210 and C-14 dating of four cores recovered from the outer and inner ría sectors it has been established the chronology of the anthropogenic signatures on the sedimentary record of the Ría de Muros (NW Spain). Recent sedimentation rates were obtained by 210Pb dating according to the Constant Rate of Supply model. Sedimentation rates during the last millennia rose from 0.29 to 3.9 mmyr-1 in the outer ría and from 0.38 to 6.2 mm yr-1 in the inner ría. Pre-anthropogenic background levels for trace elements were established considering the deepest core samples, and then, the human influence on metal contents, such as Cu, Zn and Pb, were assessed. A continuous upward increase in the enrichment factors of these elements was detected since the 16th century, reflecting a pre-industrial human environmental impact.
