3 research outputs found
The Campo de Dalias GNSS Network Unveils the Interaction between Roll-Back and Indentation Tectonics in the Gibraltar Arc
Funding: Junta de Andalucia; European Regional Development Fund; grant numbers: AGORA
P18-RT-3275, PAPEL B-RNM-301-UGR18. Programa Operativo FEDER-Andalucia 2014–2020 Project
ref. 1263446; University of Jaén; CEACTEMA; grant number: POAIUJA 21/22. Junta de AndalucÃa
(Andalusian Board); grant numbers: RNM-148, RNM-282, RNM-370. V.T.S. was supported by the
FPU PhD grant (16/04038).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.FPU
16/04038University of Jaén
POAIUJA 21/22European Regional Development Fund
1263446, AGORA P18-RT-3275, PAPEL B-RNM-301-UGR18Junta de AndalucÃa
RNM-148, RNM-282, RNM-37
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 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.Junta de Andalucia; European Regional Development Fund; grant numbers: AGORA P18-RT-3275, PAPEL B-RNM-301-UGR18. Programa Operativo FEDER-Andalucia 2014–2020 Project ref. 1263446; University of Jaén; CEACTEMA; grant number: POAIUJA 21/22. Junta de AndalucÃa (Andalusian Board); grant numbers: RNM-148, RNM-282, RNM-370. V.T.S. was supported by the FPU PhD grant (16/04038)
The Campo de Dalias GNSS Network Unveils the Interaction between Roll-Back and Indentation Tectonics in the Gibraltar Arc
12 pages, 7 figures, 1 table.-- Data Availability Statement: The data are included in Table 1 of this paperThe 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 orogensJunta de Andalucia; European Regional Development Fund; grant numbers: AGORA P18-RT-3275, PAPEL B-RNM-301-UGR18. Programa Operativo FEDER-Andalucia 2014–2020 Project ref. 1263446; University of Jaén; CEACTEMA; grant number: POAIUJA 21/22. Junta de AndalucÃa (Andalusian Board); grant numbers: RNM-148, RNM-282, RNM-370. V.T.S. was supported by the FPU PhD grant (16/04038)With the institutional support of the ‘Severo Ochoa Centre of Excellence’ accreditation (CEX2019-000928-S)Peer reviewe