Gravimetric and magnetic analysis of salt diapirs in the offshore of the Asturias basin

Authors

  • Miguel Ángel de la Fuente Depto. GEODESPAL, Univ. Complutense, Madrid
  • Alfonso Muñoz Martín Depto. GEODESPAL, Univ. Complutense, Madrid
  • Antonio José Olaiz Repsol, Exploration Technical Service, Madrid
  • Gonzalo Zamora Repsol, Exploration Technical Service, Madrid

DOI:

https://doi.org/10.55407/geogaceta102386

Keywords:

gravimetry, magnetism, Asturias Basin, salt tectonics, Cantabrian margin

Abstract

In this work a potential field analysis (gravimetry and magnetism) of the salt structures interpreted in the offshore of the Asturias Basin. For this purpose, 2D processing of the anomaly maps and three models in 2+3/4D GRAV/MAG have been carried out with the data that coincide with a 3D seismic cube acquired by Repsol in 2008. The quantitative analysis of the maps and modeling has allowed the revaluation of the structure of the basement and salt structures until adjusting the GRAV/MAG signal. These modifications are significant below the levels of evaporites, highlighting the need to introduce less salt, and a new geometry of the basement top.

References

Dentith, M. y Mudge, S. T. (2014). Geophysics for the mineral exploration geoscientist. Cambridge University Press, 85-191. https://doi.org/10.1017/CBO9781139024358

Gallastegui, J., Pulgar, J. A. y Gallart, J. (2002). Tectonics 21 (4), 15-1-15-14. https://doi.org/10.1029/2001TC901046

Gardner, G. H. F., Gardner, L. W. y Gregory, A. R. (1974). Geophysics 39 (6), 770-780. https://doi.org/10.1190/1.1440465

Hunt, C. P., Moskowitz, B. M. y Banerjee, S. K. (1995). En: Rock physics and phase relations: A handbook of physical constants (T.J. Ahrens, Ed). American Geophysical Union, 3, 189-204.

Riaza Molina, C. (1996). Geogaceta 20 (1), 169-171.

Rodríguez Fernández, L.R y Olivera, J.T. (2015): Mapa Geológico de España y Portugal, E 1:1.000.000. Instituto Geológico y Minero de España (IGME), Madrid.

Zamora, G., Fleming, M., y Gallastegui, J. (2017). En: Permo-Triassic salt provinces of Europe, North Africa and the Atlantic margins (Juan I. Soto, Joan Flinch y Gabor Tari, Eds.). Elsevier, 353-368. https://doi.org/10.1016/B978-0-12-809417-4.00017-3

Vista de los Nevados de Caullaraju o Jeulla Rajo (>5.500 m) desde la Laguna Conococha en la parte sur del Parque Nacional del Huascaran (Perú)

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Published

2021-06-12

How to Cite

de la Fuente, M. Ángel, Muñoz Martín, A., Olaiz, A. J., & Zamora, G. (2021). Gravimetric and magnetic analysis of salt diapirs in the offshore of the Asturias basin. GEOGACETA, 69, 59–62. https://doi.org/10.55407/geogaceta102386

Issue

Vol. 69 (2021): Enero-Junio

Section

Artículos

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