Natural and anthropic pollution episodes during the Late Holocene evolution of the Tinto River estuary (SW Spain) | Zendy

Marta Arroyo | Zendy; Francisco Ruiz Muñoz | Zendy; María Luz González-Regalado Montero | Zendy; Joaquin Rodrı́guez Vidal | Zendy; Luís Miguel Cáceres Puro | Zendy; Manuel Olías Álvarez | Zendy; Juan Manuel Campos Carrasco | Zendy; Lucía Fernández Sutilo | Zendy; Manuel Abad | Zendy; Tatiana Izquierdo | Zendy; Paula Gómez | Zendy; António Toscano | Zendy; Verónica Romero | Zendy; Gabriel Gómez | Zendy

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Natural and anthropic pollution episodes during the Late Holocene evolution of the Tinto River estuary (SW Spain)

Author(s) -

Marta Arroyo,

Francisco Ruiz Muñoz,

María Luz González-Regalado Montero,

Joaquin Rodrı́guez Vidal,

Luís Miguel Cáceres Puro,

Manuel Olías Álvarez,

Juan Manuel Campos Carrasco,

Lucía Fernández Sutilo,

Manuel Abad,

Tatiana Izquierdo,

Paula Gómez,

António Toscano,

Verónica Romero,

Gabriel Gómez

Publication year - 2021

Publication title -

scientia marina

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 68

eISSN - 1886-8134

pISSN - 0214-8358

DOI - 10.3989/scimar.05131.011

Subject(s) - holocene , marine transgression , estuary , foraminifera , intertidal zone , geology , natural (archaeology) , marsh , sedimentation , alluvium , oceanography , quaternary , siltation , paleontology , sediment , ecology , wetland , structural basin , biology , benthic zone

This paper investigates the paleoenvironmental evolution of a core extracted in the middle sector of the Tinto River estuary, SW Spain, one of the most polluted areas in the world due to mining over thousands of years (>4 kyr BP) and recent industrial discharges. This evolution includes alluvial sands (>6.4 cal kyr BP), bioclastic sands and silts deposited in subtidal and intertidal channels during and after the Holocene transgression maximum (6.4-4.3 cal kyr BP), the sedimentation of clayey-sandy silts in low and high marshes during the last 2.4 kyr BP and a final anthropic filling. Three sharp peaks of pollution have been detected, representing a) a natural origin during the Holocene transgression; b) the impact of the first mining activities (~4.5 cal kyr BP); and c) the effect of industrial discharge and a new period of mining activity throughout the 19th and 20th centuries. Foraminifera, ostracods and molluscs disappeared during these last two peaks.

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