Geochemical behaviour and transport of technology critical metals (TCMs) by the Tinto River (SW Spain) to the Atlantic Ocean

During the Neogene, the Betic Strait was one of the gateways that connected the Atlantic Ocean and the Mediterranean Sea. In this paper, we have analyzed the ostracod faunas of samples collected from sediments crossed by a long borehole in southwestern Spain. These sediments were deposited in the Betic strait just before the Messinian Salinity Crisis. During the middle Messinian (6.8-6.0 Ma), the scarce and low diversified ostracod assemblages (Krithe, Parakrithe, Henryhowella) are typical of upper bathyal palaeoenvironments (200-400 m water depth). This period includes a short transition (6.26-6.25 Ma) to outer neritic palaeoenvironments, coinciding with a glaciation and characterized by the presence of Acanthocythereis hystrix (Reuss, 1850) and the disappearance of Krithe and Parakrithe. The most abundant species have a wide biostratigraphic distribution, most of them ranging from the Tortonian until the Holocene.

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Metals removal from acid mine drainage (Tinto River, SW Spain) by water gap and air gap membrane distillation

Journal of Membrane Science ◽

10.1016/j.memsci.2019.03.081 ◽

2019 ◽

Vol 582 ◽

pp. 20-29 ◽

Cited By ~ 6

Author(s):

David Amaya-Vías ◽

Laurentiu Tataru ◽

Belén Herce-Sesa ◽

José A. López-López ◽

Juan A. López-Ramírez

Keyword(s):

Acid Mine Drainage ◽

Mine Drainage ◽

Membrane Distillation ◽

Air Gap ◽

Tinto River ◽

Sw Spain ◽

Acid Mine ◽

Air Gap Membrane Distillation ◽

Metals Removal

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

Scientia Marina ◽

10.3989/scimar.05131.011 ◽

2021 ◽

Vol 85 (2) ◽

pp. 113-123

Author(s):

Marta Arroyo ◽

Francisco Ruiz ◽

María Luz González-Regalado ◽

Joaquín Rodríguez Vidal ◽

Luis Miguel Cáceres ◽

...

Keyword(s):

Late Holocene ◽

River Estuary ◽

The Holocene ◽

Tinto River ◽

Sw Spain ◽

Holocene Transgression ◽

New Period ◽

Paleoenvironmental Evolution ◽

Two Peaks ◽

The Impact

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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