Gravimetric and magnetic characterization of structural controls on Sn-W ore deposits. A case study in the san finx deposit (A Coruña)

Authors

  • Alberto Santamaría Barragán Facultad de Ciencias de la Tierra, Universidad de Barcelona.
  • Puy Ayarza Arribas Geology department, University of Salamanca.
  • Juan Alcalde University of Barcelona, Faculty of Earth Sciences, Barcelona.
  • Eduard Saura Geology and Geophysics consulting, Girona.
  • David Martí Linares Geology and Geophysics consulting, Girona.
  • Imma Palomares Geology department, University of Salamanca.
  • Javier Elez Geology department, University of Salamanca.

DOI:

https://doi.org/10.55407/geogaceta99829

Keywords:

Potencial field anomalies, compressional tectonics, extensional textonics, granites, Sn-W deposits

Abstract

Critical raw materials are essential for the development of our society. However, most shallow ores have already been exploited and only deep targets remain unexplored. This work aims to apply indirect geophysical techniques to the San Finx Sn-W deposit (A Coruña) in order to get further constrains of its deep structure and geometry. Accordingly, a magnetic and a gravity survey have been carried out in the area (SE of Noia, A Coruña), at the southern part of the Malpica-Tui Complex. The resulting absolute magnetic anomaly and the relative gravity anomaly have been studied analytically and through 2-2.75D forward modeling. Results indicate that, the sampling interval (~1 km) is too high to characterize the anomalies related to the Sn-W mineralization. Contrarily, they show the potential field imprint of the regional Variscan tectonics. To better assess the relationship between the regional Variscan tectonics and the mineralization, a higher resolution survey should be acquired to detect this deposit.

References

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Erupción de La Palma de 2021 (Cumbre Vieja, 19 septiembre a 13 de diciembre de 2021).

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Published

2022-06-06

How to Cite

Santamaría Barragán, A., Ayarza Arribas, P., Alcalde, J., Saura, E., Martí Linares, D., Palomares, I., & Elez, J. (2022). Gravimetric and magnetic characterization of structural controls on Sn-W ore deposits. A case study in the san finx deposit (A Coruña). GEOGACETA, 71, 35–38. https://doi.org/10.55407/geogaceta99829

Issue

Vol. 71 (2022): Enero-Junio

Section

Artículos

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Until the year 2023 the author assigned the copyright to the Sociedad Geológica de España, but from 2024 the author retains the copyright and grants the Sociedad Geológica de España the right of first publication and non-exclusive distribution of each article in all current or future media, while transferring, also non-exclusively, the commercial rights for the distribution of the printed version of Geogaceta. On the other hand, the articles, from the year 2023, are available simultaneously with their publication, under the Creative Commons CC BY-NC-SA 4.0 license, which allows copying, transforming the work, but if any transformation is distributed, the new work must be distributed under the same license, and never for commercial purposes, while acknowledging the authorship and original publication in GEOGACETA, so that the only role of copyright is to give authors control over the integrity of their works and the right to be properly acknowledged and cited.

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