Gravimetric and magnetic characterization of structural controls on sn-wore depositsA case study in the san finx deposit (A Coruña)
- Alberto Santamaría Barragán 1
- Puy Ayarza Arribas 2
- Juan Alcalde 1
- Eduard Saura 3
- David Martí Linares 3
- Imma Palomeras 2
- Javier Elez 2
- 1 University of Barcelona, Faculty of Earth Sciences, Barcelona
- 2 Geology Department, University of Salamanca, Salamanca
- 3 Geology and geophysics consulting (LITHICA SCCL) Sta Coloma de Farners (Girona)
ISSN: 0213-683X
Year of publication: 2022
Issue: 71
Pages: 35-38
Type: Article
More publications in: Geogaceta
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.