| Title | 3-D reflection seismic imaging of the hontomín structure in the basque-cantabrian Basin (Spain) |
| Publication Type | Journal Article |
| Year of Publication | 2013 |
| Authors | Alcalde J.ab, Martí D.a, Juhlin C.c, Malehmir A.c, Sopher D.c, Saura E.a, Marzán I.a, Ayarza P.d, Calahorrano A.e, Pérez-Estaún A.ab, Carbonell R.a |
| Journal | Solid Earth |
| Volume | 4 |
| Pagination | 481–496 |
| Abstract | The Basque-Cantabrian Basin of the northern Iberia Peninsula constitutes a unique example of a major deformation system, featuring a dome structure developed by extensional tectonics followed by compressional reactivation. The occurrence of natural resources in the area and the possibility of establishing a geological storage site for carbon dioxide motivated the acquisition of a 3-D seismic reflection survey in 2010, centered on the Jurassic Hontomín dome. The objectives of this survey were to obtain a geological model of the overall structure and to establish a baseline model for a possible geological CO2 storage site. The 36 km2 survey included approximately 5000 mixed (Vibroseis and explosives) source points recorded with a 25 m inline source and receiver spacing. The target reservoir is a saline aquifer, at approximately 1450 m depth, encased and sealed by carbonate formations. Acquisition and processing parameters were influenced by the rough topography and relatively complex geology. A strong near-surface velocity inversion is evident in the data, affecting the quality of the data. The resulting 3-D image provides constraints on the key features of the geologic model. The Hontomín structure is interpreted to consist of an approximately 10 7 m2 large elongated dome with two major (W-E and NW-SE) striking faults bounding it. Preliminary capacity estimates indicate that about 1.2 Gt of CO2 can be stored in the target reservoir. © 2013 Author(s). |
| URL | http://www.scopus.com/inward/record.url?eid=2-s2.0-84893313475&partnerID=40&md5=9d3f67fb71a49a58d6a7a48c1da54f43 |
| DOI | 10.5194/se-4-481-2013 |
