61482 20260219141445.0 doi 10.1344/GeologicaActa2014.12.3.2 sideral 87645 ART-2014-87645 eng Calvín, P. (orcid)0000-0002-4485-2139 Reverse magnetic anomaly controlled by Permian igneous rocks in the Iberian Chain (N Spain) 2014 Access copy available to the general public Unrestricted Two important reverse dipolar magnetic anomalies in the Iberian Chain (Spain) are located over Permian igneous rocks. A detailed study of one of them, the Loscos magnetic anomaly, where the geological structure is well constrained, reveals that the source of the anomaly must be a reverse remanent magnetisation carried by igneous rocks, acquired during the period of the Kiaman reverse magnetic superchron. Magnetic and gravimetric detailed survey (with 50 new gravimetric measurements and 8 main magnetic profiles -six of them N–S and the rest E–Wwith a total length of 40km), together with a study of the petrophysical characteristics of igneous materials, data processing and interpretation (upward continuation, 2.5D modelling, etc.) allowed to characterize qualitatively the anomaly and its source. Two overlapping anomalies with different wavelength were identified, indicating the presence of a shallower strongly altered igneous body with heterogeneous magnetic properties, and a deeper, large igneous body, responsible for the main, long-wavelength anomaly. info:eu-repo/grantAgreement/ES/DGA/E32-17R info:eu-repo/grantAgreement/ES/MINECO/CGL2009-10840 info:eu-repo/grantAgreement/ES/MINECO/CGL2012-38481 info:eu-repo/semantics/openAccess by-sa https://creativecommons.org/licenses/by-sa/4.0/deed.es 1.367 2014 GEOLOGY 20 / 46 = 0.435 2014 Q2 T2 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Casas, A.M. Universidad de Zaragoza (orcid)0000-0003-3652-3527 Villalaín, J.J. Tierz, P. 2000 428 Universidad de Zaragoza Dpto. Ciencias de la Tierra Área Geodinámica Interna 12, 3 (2014), 193-207 Geol. acta Geologica Acta 1695-6133 8723293 http://zaguan.unizar.es/record/61482/files/texto_completo.pdf Versión publicada 96045 http://zaguan.unizar.es/record/61482/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:61482 articulos driver 2026-02-19-14:14:01 ARTICLE