Quaternary tectonic activity of the Carboneras Fault in the La Serrata range (SE Iberia): Geomorphological and chronological constraints

Moreno, Ximena; Masana, Eulàlia; Pallàs, Raimón; Gràcia, Eulália; Rodés, Ángel; Bordonau, Jaume

doi:10.1016/j.tecto.2015.08.016

Cited by 26 publications

(46 citation statements)

References 75 publications

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“…This result agrees with the minimum strike‐slip rate of 1.3 mm/yr determined by Moreno et al . [] to its onshore segment La Serrata through geomorphological and geochronological analyses and confirms this fault as important for hazard assessment. The fault zones to the northeast of the Betics (Jumilla, Crevillente, and Bajo Segura) accommodate total heave rates of about 0.6 mm/yr.…”

Section: Discussionmentioning

confidence: 53%

Lithospheric deformation in the Africa‐Iberia plate boundary: Improved neotectonic modeling testing a basal‐driven Alboran plate

et al. 2016

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We present an improved neotectonic numerical model of the complex NW Africa‐SW Eurasia plate boundary segment that runs from west to east along the Gloria Fault up to the northern Algerian margin. We model the surface velocity field and the ongoing lithospheric deformation using the most recent version of the thin‐shell code SHELLS and updated lithospheric model and fault map of the region. To check the presence versus the absence of an independently driven Alboran domain, we develop two alternative plate models: one does not include an Alboran plate; another includes it and determines the basal shear tractions necessary to drive it with known velocities. We also compare two alternative sets of Africa‐Eurasia velocity boundary conditions, corresponding to geodetic and geological‐scale averages of plate motion. Finally, we perform an extensive parametric study of fault friction coefficient, trench resistance, and velocities imposed in Alboran nodes. The final run comprises 5240 experiments, each scored to geodetic velocities (estimated for 250 stations and here provided), stress direction data, and seismic strain rates. The model with the least discrepancy to the data includes the Alboran plate driven by a basal WSW directed shear traction, slightly oblique to the westward direction of Alboran motion. We provide estimates of long‐term strain rates and slip rates for the modeled faults, which can be useful for further hazard studies. Our results support that a mechanism additional to the Africa‐Eurasia convergence is required to drive the Alboran domain, which can be related to subduction processes occurring within the mantle.

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Section: Discussionmentioning

confidence: 53%

Lithospheric deformation in the Africa‐Iberia plate boundary: Improved neotectonic modeling testing a basal‐driven Alboran plate

et al. 2016

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“…We consider that all of the abovementioned evidence allows us to rule out the hypothesis of zero residual velocity for the Bajo Segura Basin. Likewise, the slip rates reported for the western and central sectors of the EBSZ range from 1.5 ± 0.3 to 0.8 ± 0.4 mm/year (Ferrater et al, ; Echeverria et al, , ; Martínez‐Díaz et al, , Gràcia et al, ; Moreno et al, , , among many others). Consequently, we postulate that the residual velocities obtained in the eastern EBSZ (our study area) should be similar to those reported in other sectors; that is, here, we discard the near‐zero hypothesis.…”

Section: Discussionmentioning

confidence: 95%

“…In addition, the study area is located in the EBSZ, which is a major tectonic structure with regional significance. Many geological (Ferrater et al, ; Martínez‐Díaz et al, ; Gràcia et al, ; Moreno et al, , , among many others) and geodetic (Echeverria et al, , ) studies have shown that the EBSZ is an active structure.…”

Section: Discussionmentioning

confidence: 99%

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

et al. 2019

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We 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.

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“…-CF: The lateral slip rate is inferred from geomorphological analysis onshore (CF-2, 3) and offshore (CF-1, 2), 3D paleoseismological studies (CF-3;Moreno, 2011;Moreno et al, 2015) and geodetic studies (CF-3;Echeverria et al, 2015). All three methods are coincident in the predicted slip rate values (1.2 ± 0.1 mm•yr −1 ) and valid since the Pliocene but also for the Holocene.…”

Section: Declaration Of Competing Interestmentioning

confidence: 98%

Modelling earthquake rupture rates in fault systems for seismic hazard assessment: The Eastern Betics Shear Zone

Gómez-Novell

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García-Mayordomo

et al. 2020

Engineering Geology

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Quaternary tectonic activity of the Carboneras Fault in the La Serrata range (SE Iberia): Geomorphological and chronological constraints

Cited by 26 publications

References 75 publications

Lithospheric deformation in the Africa‐Iberia plate boundary: Improved neotectonic modeling testing a basal‐driven Alboran plate

Lithospheric deformation in the Africa‐Iberia plate boundary: Improved neotectonic modeling testing a basal‐driven Alboran plate

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

Modelling earthquake rupture rates in fault systems for seismic hazard assessment: The Eastern Betics Shear Zone

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