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dc.contributor.authorRobles Arenas, Virginia
dc.contributor.authorCandela Lledó, Lucila
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria del Terreny, Cartogràfica i Geofísica
dc.date.accessioned2010-09-16T15:01:27Z
dc.date.available2010-09-16T15:01:27Z
dc.date.created2010-09
dc.date.issued2010-09
dc.identifier.citationRobles, V.; Candela, L. Hydrological conceptual model characterisation of an abandoned mine site in semiarid climate: the Sierra de Cartagena-La Unión (SE Spain). "Geologica acta", Setembre 2010, vol. 8, núm. 3, p. 235-248.
dc.identifier.issn1695-6133
dc.identifier.urihttp://hdl.handle.net/2117/8920
dc.description.abstractA comprehensive study at Sierra de Cartagena-La Unión (SE Spain) abandoned mine site was carried out to characterise the regime and water quality of the groundwater system after the mine closure. The system consists of five geologic fractured blocks belonging to the Alpujarride and Nevado-Filabride complexes. The aquifer units are composed of limestone and dolostone materials. Recharge is mainly controlled by the N-130 fault system, man-made induced fractures, open-pits and underground workings. Discharge is indicated from open pit lakes by the proximal dome-shaped groundwater level contours. Aquifer natural recharge, assessed by fracture density maps and chloride mass balance, provided consistent results. The water hydrochemical facies show a marked sulphate concentration and acidic pH (average pH of 2.53-6.30). A maximum concentration of 4,100 mg/L of Zn and 40,000 mg/L of sulphate was observed in open-pit lakes. Springs present the lowest residence time and are low mineralised with an average pH of 7.6. Geochemical modelling based on the PHREEQCI code indicates water undersaturation with respect to almost all related mineral species and anoxic conditions prevail in the system. Although an adequate understanding of the regional system is provided, a further detailed hydrochemical study is necessary to assess the undergoing geochemical changes.
dc.format.extent14 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Geologia::Hidrologia subterrània
dc.subject.lcshGroundwater--Spain
dc.subject.lcshStrip mining--Environmental aspects
dc.subject.otherFractured aquifer
dc.subject.otherOpen-pit and underground mining
dc.subject.otherSierra de Cartagena-La Unión
dc.subject.otherAcid mine drainage
dc.subject.otherSemi-arid zone hydrology
dc.titleHydrological conceptual model characterisation of an abandoned mine site in semiarid climate: the Sierra de Cartagena-La Unión (SE Spain)
dc.typeArticle
dc.subject.lemacMines -- Explotació a cel obert -- Aspectes ambientals
dc.subject.lemacAigües subterrànies -- Contaminació
dc.contributor.groupUniversitat Politècnica de Catalunya. GHS - Grup d'Hidrologia Subterrània
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://www.geologica-acta.com/pdf/vol0803a02.pdf
dc.rights.accessOpen Access
local.identifier.drac2751548
dc.description.versionPostprint (published version)
local.citation.authorRobles, V.; Candela, L.
local.citation.publicationNameGeologica acta
local.citation.volume8
local.citation.number3
local.citation.startingPage235
local.citation.endingPage248


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