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The main objective of this work is to characterize the structures belonging to the Altomira Range and Loranca Basin (SW Iberian Chain, Central Spain) in terms of understanding their present-day orientation, highly oblique with respect to the NW-SE orientation of adjacent structures of the Iberian Chain. The Altomira and Loranca fold and thrust belts present a slightly curved geometry with a general north-south orientation at their central sector, and structures oriented NNE-SSW and north-south to NNW-SSE at their northern and southern sectors, respectively. Palaeomagnetic data from Middle Eocene-Lower Miocene rocks (including clays, fine sandstones and limestones) reveal the absence of vertical-axis rotations in the central sector of the studied area, where structures are oriented north-south, and up to 17° of clockwise and 21° of anticlockwise vertical-axis rotations in the northern and southern sectors, respectively. These data are supported by calculations of the theoretical vertical-axis rotations from shortening estimates and basement-cover structural relationships. This approach highlights the importance of integrating different datasets to characterize the obliquity of fold and thrust belts. © 2016 The Author(s).This work was funded by the project KINESAL (CGL2010-21968-C02-02) of the Spanish Ministry of Economy and Competitiveness and a PhD-IGME grant\udfor the first author. It is a contribution of the Geomodels Research Institute and the Grup de Recerca de Geodinámica i Análisi de Conques (2014SGR467, supported by\udthe Agència de Gestió d’Ajuts Universitaris i de Recerca and the Secretaria d’Universitats i Recerca del Departament\udd’Economia i Coneixement de la Generalitat de\udCatalunya).Peer reviewe

geological society london special publications

Integration of palaeomagnetic data, basement-cover relationships and theoretical calculations to characterize the obliquity of the Altomira–Loranca structures (central Spain)