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The Campo de Dalias GNSS Network Unveils the Interaction between Roll-Back and Indentation Tectonics in the Gibraltar Arc

The Gibraltar Arc includes the Betic and Rif Cordilleras surrounding the Alboran Sea; it is formed at the northwest–southeast Eurasia–Nubia convergent plate boundary in the westernmost Mediterranean. Since 2006, the Campo de Dalias GNSS network has monitored active tectonic deformation of the most s...

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Autores principales: Galindo-Zaldivar, Jesús, Gil, Antonio J., Tendero-Salmerón, Víctor, Borque, María J., Ercilla, Gemma, González-Castillo, Lourdes, Sánchez-Alzola, Alberto, Lacy, María C., Estrada, Ferran, Avilés, Manuel, Alfaro, Pedro, Madarieta-Txurruka, Asier, Chacón, Fernando
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8954893/
https://www.ncbi.nlm.nih.gov/pubmed/35336300
http://dx.doi.org/10.3390/s22062128
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author Galindo-Zaldivar, Jesús
Gil, Antonio J.
Tendero-Salmerón, Víctor
Borque, María J.
Ercilla, Gemma
González-Castillo, Lourdes
Sánchez-Alzola, Alberto
Lacy, María C.
Estrada, Ferran
Avilés, Manuel
Alfaro, Pedro
Madarieta-Txurruka, Asier
Chacón, Fernando
author_facet Galindo-Zaldivar, Jesús
Gil, Antonio J.
Tendero-Salmerón, Víctor
Borque, María J.
Ercilla, Gemma
González-Castillo, Lourdes
Sánchez-Alzola, Alberto
Lacy, María C.
Estrada, Ferran
Avilés, Manuel
Alfaro, Pedro
Madarieta-Txurruka, Asier
Chacón, Fernando
author_sort Galindo-Zaldivar, Jesús
collection PubMed
description The Gibraltar Arc includes the Betic and Rif Cordilleras surrounding the Alboran Sea; it is formed at the northwest–southeast Eurasia–Nubia convergent plate boundary in the westernmost Mediterranean. Since 2006, the Campo de Dalias GNSS network has monitored active tectonic deformation of the most seismically active area on the north coast of the Alboran Sea. Our results show that the residual deformation rates with respect to Eurasia range from 1.7 to 3.0 mm/year; roughly homogenous west-southwestward displacements of the northern sites occur, while the southern sites evidence irregular displacements towards the west and northwest. This deformation pattern supports simultaneous east-northeast–west-southwest extension, accommodated by normal and oblique faults, and north-northwest–south-southeast shortening that develops east-northeast–west-southwest folds. Moreover, the GNSS results point to dextral creep of the main northwest–southeast Balanegra Fault. These GNNS results thus reveal, for the first time, present-day interaction of the roll-back tectonics of the Rif–Gibraltar–Betic slab in the western part of the Gibraltar Arc with the indentation tectonics affecting the eastern and southern areas, providing new insights for improving tectonic models of arcuate orogens.
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spelling pubmed-89548932022-03-26 The Campo de Dalias GNSS Network Unveils the Interaction between Roll-Back and Indentation Tectonics in the Gibraltar Arc Galindo-Zaldivar, Jesús Gil, Antonio J. Tendero-Salmerón, Víctor Borque, María J. Ercilla, Gemma González-Castillo, Lourdes Sánchez-Alzola, Alberto Lacy, María C. Estrada, Ferran Avilés, Manuel Alfaro, Pedro Madarieta-Txurruka, Asier Chacón, Fernando Sensors (Basel) Article The Gibraltar Arc includes the Betic and Rif Cordilleras surrounding the Alboran Sea; it is formed at the northwest–southeast Eurasia–Nubia convergent plate boundary in the westernmost Mediterranean. Since 2006, the Campo de Dalias GNSS network has monitored active tectonic deformation of the most seismically active area on the north coast of the Alboran Sea. Our results show that the residual deformation rates with respect to Eurasia range from 1.7 to 3.0 mm/year; roughly homogenous west-southwestward displacements of the northern sites occur, while the southern sites evidence irregular displacements towards the west and northwest. This deformation pattern supports simultaneous east-northeast–west-southwest extension, accommodated by normal and oblique faults, and north-northwest–south-southeast shortening that develops east-northeast–west-southwest folds. Moreover, the GNSS results point to dextral creep of the main northwest–southeast Balanegra Fault. These GNNS results thus reveal, for the first time, present-day interaction of the roll-back tectonics of the Rif–Gibraltar–Betic slab in the western part of the Gibraltar Arc with the indentation tectonics affecting the eastern and southern areas, providing new insights for improving tectonic models of arcuate orogens. MDPI 2022-03-09 /pmc/articles/PMC8954893/ /pubmed/35336300 http://dx.doi.org/10.3390/s22062128 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Galindo-Zaldivar, Jesús
Gil, Antonio J.
Tendero-Salmerón, Víctor
Borque, María J.
Ercilla, Gemma
González-Castillo, Lourdes
Sánchez-Alzola, Alberto
Lacy, María C.
Estrada, Ferran
Avilés, Manuel
Alfaro, Pedro
Madarieta-Txurruka, Asier
Chacón, Fernando
The Campo de Dalias GNSS Network Unveils the Interaction between Roll-Back and Indentation Tectonics in the Gibraltar Arc
title The Campo de Dalias GNSS Network Unveils the Interaction between Roll-Back and Indentation Tectonics in the Gibraltar Arc
title_full The Campo de Dalias GNSS Network Unveils the Interaction between Roll-Back and Indentation Tectonics in the Gibraltar Arc
title_fullStr The Campo de Dalias GNSS Network Unveils the Interaction between Roll-Back and Indentation Tectonics in the Gibraltar Arc
title_full_unstemmed The Campo de Dalias GNSS Network Unveils the Interaction between Roll-Back and Indentation Tectonics in the Gibraltar Arc
title_short The Campo de Dalias GNSS Network Unveils the Interaction between Roll-Back and Indentation Tectonics in the Gibraltar Arc
title_sort campo de dalias gnss network unveils the interaction between roll-back and indentation tectonics in the gibraltar arc
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8954893/
https://www.ncbi.nlm.nih.gov/pubmed/35336300
http://dx.doi.org/10.3390/s22062128
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