Aftershocks series monitoring of the September 18, 2004 M=4.6 earthquake at the western Pyrenees: A case of reservoir-triggered seismicity?

Ruiz, Mario; Gaspà, O.; Muset, Josep Gallart; Díaz, Jordi; Pulgar, J. A.; Garcı́a-Sansegundo, Joaquı́n; Fernández, Carlos López; González-Cortina, J.M.

doi:10.1016/j.tecto.2006.03.037

Cited by 25 publications

(27 citation statements)

References 47 publications

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“…West of the Hendaya fault, the seismicity decreases abruptly with only few sparse events. Detailed regional seismic studies using temporal networks have confirmed these features (Ruiz et al, 2006a(Ruiz et al, , 2006b). The propagation of crustal phases across this zone of the western Pyrenees shows an anomalously strong attenuation, whose origin has been related to a crustal region with increased heterogeneity and intrinsic attenuation due to a strong deformation process (Sens-Schönfelder et al, 2009).…”

Section: Discussionmentioning

confidence: 81%

Mapping the indentation between the Iberian and Eurasian plates beneath the Western Pyrenees/Eastern Cantabrian Mountains from receiver function analysis

et al. 2012

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In the last decades, active seismic profiling in the northern part of the Iberian Peninsula have evidenced that the Alpine collision between the Iberian and Eurasian plates resulted in a complex crustal structure, with the Iberian crust underthrusting the Eurasian crust and reaching depths of at least 45-50 km beneath the Pyrenean chain and the Cantabrian Mountains. In the transition between these two zones the situation is particularly complex, as evidenced in previous wide-angle and passive seismic studies.

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Section: Discussionmentioning

confidence: 81%

Mapping the indentation between the Iberian and Eurasian plates beneath the Western Pyrenees/Eastern Cantabrian Mountains from receiver function analysis

et al. 2012

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“…Itoiz Reservoir in central‐western Pyrenees, Spain, a region of low‐level ambient seismicity, was the location of a M 4.6 reservoir‐induced earthquake in 2004 September (Ruiz et al 2006a,b). Following further impoundment (to 2008), the seismicity has spread as far as 30 km from the reservoir.…”

Section: Introductionmentioning

confidence: 99%

Reservoir-induced seismicity associated with the Itoiz Reservoir, Spain: a case study

Durá‐Gómez

Talwani

2010

Geophysical Journal International

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S U M M A R YReservoir-induced seismicity was observed in 2004 after the impoundment of the Itoiz Reservoir in the central-western Pyrenees, Spain. Subsequent annual filling cycles were accompanied by large epicentral growth in the northern part of the Jaca-Pamplona basin. Based on the evaluation of the available geohydrologic data, we suggest that the seismicity is associated with the diffusion of increased pore pressures along the carbonate megabreccia systems of the Early to Middle Eocene age Hecho Group. Assuming 1-D pore-pressure diffusion from the Itoiz Reservoir, we estimate that excess pore pressures of ∼100-500 kPa are adequate to induce M ≥ 3.0 earthquakes in this geological terrane. The results of this study have potential applicability in regions where reservoirs are built over karst terranes.

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“…According to our modeling results, the exhumation of the Oroz‐Betelu massif was rapid up to the early Oligocene. Ruiz, Gaspà, et al () considered that the anticline cored by the Paleozoic massif is related to a basement thrust, cut by the Aoiz‐1 borehole (Figure a), in which Triassic rocks are found below the Paleozoic at 4.2 km depth. According to these authors, this basement thrust corresponds to the western prolongation of the Gavarnie thrust, cropping out farther east (e.g., Labaume & Teixell, ; Teixell, ; Teixell et al, ).…”

Section: Discussionmentioning

confidence: 99%

Unraveling the Mesozoic and Cenozoic Tectonothermal Evolution of the Eastern Basque‐Cantabrian Zone–Western Pyrenees by Low‐Temperature Thermochronology

et al. 2019

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Low‐temperature thermochronology studies have increased our knowledge of the orogenic processes along the Pyrenean‐Cantabrian mountain belt by placing time constraints on the exhumation history of its rocks. However, a significant gap in the data existed between the western Pyrenees and the central Cantabrian Mountains, hampering a comprehensive view of the tectonothermal evolution along the belt. We present a new apatite fission track and zircon (U‐Th)/He (ZHe) data set for the eastern Basque‐Cantabrian zone–western Pyrenees. Apatite fission track central ages cluster in the Eocene‐Oligocene. ZHe samples can be separated into two groups: Group 1 depicts clustered ZHe ages‐eU concentration (Cinco Villas massif) and Group 2 depicts dispersed ZHe ages‐eU concentration (Alduides massif and a Paleozoic rock pinned along the Leiza thrust). A sample from the Oroz‐Betelu massif shows intermediate behavior. Inverse modeling suggests that samples from Group 1 reached 240–280 °C in the Late Cretaceous, implying deep sedimentary burial of the Cinco Villas massif before its major exhumation phase, most probably in the early to middle Eocene, postdating the phase of rapid exhumation of the western part of the Leiza thrust. The sample from the Oroz‐Betelu massif, far from the Mesozoic exhumed mantle domain, experienced maximum temperatures close to 200 °C by burial beneath the Jaca‐Pamplona basin. It was later exhumed in the hanging wall of the Gavarnie thrust in the Bartonian‐Priabonian. This work provides new insights into the tectonothermal evolution of the Basque massifs and the inversion of a hyperextended margin.

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Aftershocks series monitoring of the September 18, 2004 M=4.6 earthquake at the western Pyrenees: A case of reservoir-triggered seismicity?

Cited by 25 publications

References 47 publications

Mapping the indentation between the Iberian and Eurasian plates beneath the Western Pyrenees/Eastern Cantabrian Mountains from receiver function analysis

Mapping the indentation between the Iberian and Eurasian plates beneath the Western Pyrenees/Eastern Cantabrian Mountains from receiver function analysis

Reservoir-induced seismicity associated with the Itoiz Reservoir, Spain: a case study

Unraveling the Mesozoic and Cenozoic Tectonothermal Evolution of the Eastern Basque‐Cantabrian Zone–Western Pyrenees by Low‐Temperature Thermochronology

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