EGU22-6031, updated on 09 Jan 2023
https://doi.org/10.5194/egusphere-egu22-6031
EGU General Assembly 2022
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Multi-seismic imaging: Development of geological and geophysical models of the subsurface in the Iberian Pyrite Belt (SW-Iberia) 

Ramon Carbonell1, Handoyo Handoyo2, Yesenia Martinez3, David Marti4, Juan Alcalde1, Mario Ruiz1, puy Ayarza3, and Fernando Tornos5
Ramon Carbonell et al.
  • 1Geosciences Barcelona, (Geo3BCN-CSIC) Spain (ramon.carbonell@csic.es)
  • 2University of Barcelona, Spain
  • 3Universidad de Slamanca, Salanca, Spain
  • 4Lithica S.L., Barcelona, Spain
  • 5CSIC-IGEO, Inst. Geociencias Madrid, Spain

Control and natural source seismic reflection records were acquired in the early fall in 2018 in the Sotiel-Elvira mining prospect, as part of the SIT4ME project (funded by EIT RawMaterials). Over 700 seismic digital instruments were deployed in a pseudo-3D grid to register these seismic signals in order to image and characterize the subsurface of the study area. The 2- and 3-component instruments used recorded wide azimuth and relatively long offset data. A 32 Tn Vibroseis truck was used in 900 vibration points to complete the controlled source component of the experiment. The array of receivers (deployed within a grid of 10x10m) recorded P- and S- waves and allowed to develop seismic velocity models derived from first arrival travel time tomography and multichannel analysis of surface waves (MASW). Results are further constrained by density measurements of rock samples and surface geology. The integrated information places structural constrains in the subsurface and allows us to depict areas where higher than average P and S wave velocities, characteristic of massive sulphides, might point out to the existence of new or better delimited deposits within the Iberian Pyrite Belt (SW- Iberia). The area is under assessment for potential future exploitation. This experiment further demonstrates the potential of non-invasive and relatively inexpensive seismic techniques to address high-resolution imaging of mineralized areas.

How to cite: Carbonell, R., Handoyo, H., Martinez, Y., Marti, D., Alcalde, J., Ruiz, M., Ayarza, P., and Tornos, F.: Multi-seismic imaging: Development of geological and geophysical models of the subsurface in the Iberian Pyrite Belt (SW-Iberia) , EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-6031, https://doi.org/10.5194/egusphere-egu22-6031, 2022.