Deciphering western Mediterranean kinematics using metamorphic porphyroblasts from the Alpujárride Complex (Betic Cordillera) Ruiz Fuentes, Alejandro Aerden, Domingo Gerard Alpujarride complex Betic Cordillera Alpine orogeny Foliation intersection axes X-ray computed tomography Supplementary data to this article can be found online at https://doi.org/10.1016/j.jsg.2023.104823. Acknowledgements We thank Etienne Skrzypek and two anonymous reviewers for constructive comments that helped improve an early version of the manuscript, and Toru Takeshita for his editorial work. We thank Ángel Perandrés-Villegas for making the thin sections studied for this work and Fátima Linares Ordóñez for the XCT scanning of samples. The research was carried out as part of a Ph.D. project of ARF financed by an FPU grant from the Spanish Ministery of Education and Science, Culture and Sports (FPU17/01874). Research expenses were covered by Spanish government grant CGL2016-80687-R AEI/FEDER, and Junta de Andalucía Projects P18-RT-3275 (AGORA), B-RNM-301-UGR18 (PAPEL) and RNM148. Funding for open access charge: Universidad de Granada / CBUA. 3D microstructural analysis of porphyroblast inclusion trails using X-ray Computed Tomography is integrated with analysis of field structures to unravel the Alpine deformation history of the Alpujárride Complex, which constitutes the partially submerged metamorphic core of the Gibraltar Arc. Prograde metamorphism in the complex has been traditionally linked to a ’D1’ event witnessed by inclusion trails in garnet porphyroblasts. Orientation data for these microstructures reveal three age groups with differently oriented axes of inclusion-trail curvature (known as FIA). The successive development of FIAs trending WNW-ESE, ENE-WSW and NNW-SSE is shown and correlated with the Paleogene-Neogene relative plate-motion paths of Africa, Iberia and the Alborán Domain as known from paleomagnetic data. During the late-metamorphic evolution of the Alpuj´arride Complex, after garnet growth had ceased, two steeply dipping crenulation cleavages and associated folds with roughly suborthogonal N–S and E-W trends developed, in addition to two subhorizontal ones. Inclusion trails are also found to exhibit a general preference for subvertical and subhorizontal orientations, suggesting a protracted orogenic evolution characterized by multiple stress permutations causing alternations of crustal shortening and gravitational collapse. 2023-04-19T12:04:32Z 2023-04-19T12:04:32Z 2023-02-08 info:eu-repo/semantics/article A. Ruiz-Fuentes and D.G.A.M. Aerden. Deciphering western Mediterranean kinematics using metamorphic porphyroblasts from the Alpujárride Complex (Betic Cordillera). Journal of Structural Geology 168 (2023) 104823 [https://doi.org/10.1016/j.jsg.2023.104823] https://hdl.handle.net/10481/81109 10.1016/j.jsg.2023.104823 eng http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Attribution-NonCommercial-NoDerivatives 4.0 Internacional Elsevier