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How Much Nubia‐Eurasia Convergence Is Accommodated by the NE End of the Eastern Betic Shear Zone (SE Spain)? Constraints From GPS Velocities

dc.contributor.authorBorque, María Jesús
dc.contributor.authorSánchez-Alzola, Alberto
dc.contributor.authorMartín-Rojas, Iván
dc.contributor.authorAlfaro, Pedro
dc.contributor.authorMolina-Palacios, Sergio
dc.contributor.authorRosa-Cintas, Sergio
dc.contributor.authorRodríguez-Caderot, Gracia
dc.contributor.authorde Lacy, María Clara
dc.contributor.authorGarcía-Armenteros, Juan Antonio
dc.contributor.authorAvilés-Moreno, Manuel
dc.contributor.authorHerrera-Olmo, Antonio Manuel
dc.contributor.authorGarcía-Tortosa, Francisco Juan
dc.contributor.authorEstévez-Rubio, Antonio
dc.contributor.authorGil-Cruz, Antonio José
dc.date.accessioned2024-02-03T11:18:34Z
dc.date.available2024-02-03T11:18:34Z
dc.date.issued2019-04-29
dc.descriptionAll the data used are listed in the references or archived in the University of Alicante repository (http://hdl.handle.net/10045/77387).es_ES
dc.description.abstractWe present the first GPS-derived geodetic observations from the NE end of the Eastern Betic Shear Zone obtained from the Bajo Segura GPS network (SE Spain). The network has 11 GPS sites and was sampled four times between 1999 and 2013. Despite the low signal-to-noise ratio of the residual velocities obtained, the velocities are nonzero at 95% confidence level. We postulate that the GPS data point to the partitioning of deformation into the NNW–SSE shortening and a N70E left-lateral component. The maximum deformation rates are located along the two main active faults in the study area. The maximum shortening rates (north component) in the southern region of the Bajo Segura Basin vary from west to east, ranging from 0.2 to 0.7 mm/year along the Bajo Segura Fault Zone. On the northern border of the basin, along the Crevillente Fault Zone, left-lateral displacement varies between 0.4 and 0.7 mm/year in the E-W direction. The GPS-based regional geodynamic models of the Western Mediterranean indicate that the residual shortening of the Eurasia-Nubia plate convergence is accommodated in the eastern part of the Iberian Peninsula and the Algero-Balearic Basin. Our results indicate that part of this residual deformation occurs at the NE end of the Eastern Betic Shear Zone, but significant deformation must be accommodated also to the north (External Betics) and to the south (Cartagena Basin and offshore area). We postulate that Eurasia-Nubia plate convergence is transferred to the Eastern Betics because of the thin and rigid (potentially oceanic) crust of the Algero-Balearic Basin, which acts as an indenter.es_ES
dc.description.sponsorshipThis research was funded by the Spanish Ministry of Economy and Competitiveness (research project CGL2011-30153-C02-02), University of Alicante (research project VIGROB053), University of Jaén (PAIUJA 2019/2020, CEACTierra), and RNM282 Research Group of Junta de Andalucía.es_ES
dc.identifier.citationBorque, M. J., Sánchez‐Alzola, A., Martin‐Rojas, I., Alfaro, P., Molina, S., Rosa‐Cintas, S., et al. (2019). How much Nubia‐Eurasia convergence is accommodated by the NE end of the Eastern Betic Shear Zone (SE Spain)? Constraints from GPS velocities. Tectonics, 38, 1824–1839.es_ES
dc.identifier.issn0278-7407es_ES
dc.identifier.otherhttps://doi.org/10.1029/2018TC004970es_ES
dc.identifier.urihttps://hdl.handle.net/10953/1953
dc.language.isoenges_ES
dc.publisherAmerican Geophysical Uniones_ES
dc.relation.ispartofTectonics 2019; 38: 1824–1839es_ES
dc.rightsCC0 1.0 Universal*
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES
dc.rights.urihttp://creativecommons.org/publicdomain/zero/1.0/*
dc.titleHow Much Nubia‐Eurasia Convergence Is Accommodated by the NE End of the Eastern Betic Shear Zone (SE Spain)? Constraints From GPS Velocitieses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.type.versioninfo:eu-repo/semantics/publishedVersiones_ES

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