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Determining the geometry of tailings dams using magnetic prospecting in the La Carolina mining district (southern Spain)

dc.contributor.authorMendoza, Rosendo
dc.contributor.authorRey, Javier
dc.contributor.authorVilchez, José
dc.date.accessioned2025-07-03T17:15:15Z
dc.date.available2025-07-03T17:15:15Z
dc.date.issued2025-06-21
dc.description.abstractIn the former mining district of La Carolina (southern Spain), waste materials were accumulated until the beginning of the 1980s without first waterproofing the substrate. Additionally, these mining dumps were abandoned without any type of restoration, which are conditions that present a significant risk of contamination of the surrounding soils and waters. Prior to carrying out the necessary work for isolating these residues, it is essential to know the geometry, thickness and distribution of wastes accumulated on the base substrate. For that purpose, in recent years, different indirect study techniques have been used, among which electrical tomography stands out. In this work, a complementary technique, magnetometry, both in its magnetic and gradiometric modalities, is used as an additional method to analyse the geometry and structure of a tailings dam. The results obtained with this methodology are compared with the results provided by electrical techniques, as well as with direct data from mechanical surveys and aerial photographs prior to waste deposition. Four total field magnetic anomaly profiles were selected for forward modelling using Mag2dc software. A correlation between total field magnetic anomaly values and changes in the accumulated thickness of mining waste was established. In this example, the lowest magnetic values coincide with the smallest thicknesses of the tailings dam. This comparative study shows the usefulness of magnetic prospecting in characterizing the base geometry of these mining structures and therefore the application to environmental characterization studies.
dc.description.departmentDepto. de Geodinámica, Estratigrafía y Paleontología
dc.description.facultyFac. de Ciencias Geológicas
dc.description.refereedTRUE
dc.description.sponsorshipUniversidad de Jaén
dc.description.sponsorshipMICIU/AEI/https://doi.org/10.13039/501100011033
dc.description.statuspub
dc.identifier.citationMendoza, R., Rey, J., Vilchez, J., Martínez-Moreno, F. J., & Hidalgo, M. C. (2025). Determining the geometry of tailings dams using magnetic prospecting in the La Carolina mining district (Southern spain). Bulletin of Engineering Geology and the Environment, 84(7), 374. https://doi.org/10.1007/s10064-025-04398-6
dc.identifier.doi10.1007/s10064-025-04398-6
dc.identifier.essn1435-9537
dc.identifier.issn1435-9529
dc.identifier.officialurlhttps://doi.org/10.1007/s10064-025-04398-6
dc.identifier.relatedurlhttps://link.springer.com/article/10.1007/s10064-025-04398-6
dc.identifier.urihttps://hdl.handle.net/20.500.14352/122191
dc.issue.number374
dc.journal.titleBulletin of Engineering Geology and the Environment
dc.language.isoeng
dc.publisherSpringer
dc.relation.projectIDPID2021-123506OB-I00
dc.rightsAttribution 4.0 Internationalen
dc.rights.accessRightsopen access
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subject.cdu504.5:622
dc.subject.keywordSulfide ores
dc.subject.keywordTailings dams
dc.subject.keywordEnvironmental hazard
dc.subject.keywordMagnetometry
dc.subject.keywordMagnetic susceptibility
dc.subject.keywordLa Carolina mining district
dc.subject.ucmGeodinámica
dc.subject.unesco2506.04 Geología Ambiental
dc.titleDetermining the geometry of tailings dams using magnetic prospecting in the La Carolina mining district (southern Spain)
dc.typejournal article
dc.type.hasVersionVoR
dc.volume.number84
dspace.entity.typePublication

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