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Background Conditions and Mining Pollution throughout History in the Río Tinto (SW Spain)

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Department of Geodynamics and Palaeontology, University of Huelva, Campus "El Carmen", 21071 Huelva, Spain
2
Department of Geology, University of Huelva, Campus "El Carmen", 21071 Huelva, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Yu-Pin Lin
Environments 2015, 2(3), 295-316; https://doi.org/10.3390/environments2030295
Received: 19 April 2015 / Revised: 12 June 2015 / Accepted: 17 June 2015 / Published: 26 June 2015
The Río Tinto drains the eastern part of the Iberian Pyrite Belt (IPB), an area with a huge amount of massive sulphide deposits that has been mined for the last 4500 years. This river presents extreme conditions, with very high concentrations in solution of metals and metalloids and low pH values. Mining activities in the upper part of the watershed of the Río Tinto have been documented since historical times and a huge amount of widespread acid-producing mine residues exist in this area. Nevertheless, there is no consensus among the scientific community as to whether the extreme conditions of the Río Tinto are the result of natural processes or the intense mining activity in the region. Here we show, using numerous geological, archaeological and historical records, that the present quality of the Río Tinto is the result of mining activities, especially during the period 1850–2001, while natural processes of formation of acid rock drainage can be considered negligible. View Full-Text
Keywords: sulphide deposits; acid mine drainage; Iberian Pyrite Belt sulphide deposits; acid mine drainage; Iberian Pyrite Belt
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Olías, M.; Nieto, J.M. Background Conditions and Mining Pollution throughout History in the Río Tinto (SW Spain). Environments 2015, 2, 295-316.

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