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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/224556
Surface and subsurface geology of the Hontomín structure, Western Pyrenees
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A detailed geological study was conducted in the Hontomín area in the western Pyrenees,Northern Spain, focusing on structural characterization by integrating available subsurfacedata with a newly developed surface geological map. It reveals a relatively simple surfacestructure, with the Upper Cretaceous generally dipping gently eastward, except at thesouthern margin, where they are deformed into tight E-W-trending folds. In contrast,the unconformable Cenozoic layers dip only a few degrees southward. However, seismicdata interpretation reveals a much more complex subsurface structure. It is dominatedby a broad dome, cored by Upper Triassic salt, which has significantly influenced theoverlying stratigraphy and structure. Above the salt, the Jurassic and Lower Cretaceousunits exhibit moderate folding, a deformation style that is not apparent at the surface.The deep structure is controlled by a major E-W trending thrust fault, which is notclearly expressed at surface except through small-scale, tight folds aligned in the samedirection. This study highlights the importance of integrating surface mapping withgeophysical data, both for accurately interpreting subsurface geology when planning forCO₂ injection operations.
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CAROLA I MOLAS, Eloi, et al. Surface and subsurface geology of the Hontomín structure, Western Pyrenees. Journal of Maps. 2025. Vol. 21, num. 1, pags. 1-13. ISSN 1744-5647. [consulted: 18 of August of 2026]. Available at: https://hdl.handle.net/2445/224556