The Neogene structure of the eastern Iberian margin: Structural constraints on the crustal evolution of the Valencia trough (western Mediterranean)

Roca, Eduard; Guimerà, Joan

doi:10.1016/0040-1951(92)90224-t

Cited by 198 publications

(147 citation statements)

References 21 publications

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“…1). These basins represent the onshore deformation of the Valencia Trough (Álvaro et al 1979;Vegas et al 1979;Roca and Guimerà 1992) and are bound by active faults that contribute to earthquake hazard in the region (e.g., Simón et al 2015). Two rift episodes have been distinguished (Simón 1982(Simón , 1983: the first one (Late Miocene) produced the NNE-SSW trending Teruel graben, while the second one (Late Pliocene-Quaternary) gave rise to the NNW-SSE trending Jiloca graben and reactivated the Teruel graben.…”

Section: Geological and Structural Settingmentioning

confidence: 99%

Geophysical characterization of buried active faults: the Concud Fault (Iberian Chain, NE Spain)

Anchuela

Lafuente

Arlegui

et al. 2015

Int J Earth Sci (Geol Rundsch)

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Section: Geological and Structural Settingmentioning

confidence: 99%

Geophysical characterization of buried active faults: the Concud Fault (Iberian Chain, NE Spain)

Anchuela

Lafuente

Arlegui

et al. 2015

Int J Earth Sci (Geol Rundsch)

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“…1) that postdate the Alpine compressive structures and represent the onshore deformation of the Valencia Trough (Vegas et al 1979;Roca and Guimerà 1992). They evolved through two successive rift episodes (Simón 1982(Simón , 1983: the first one (Miocene) produced the main NNE-SSW trending grabens (Teruel and Maestrat); the second one (Late Pliocene-Quaternary) gave rise to the NNW-SSE trending Jiloca graben and reactivated the Teruel and Maestrat grabens.…”

Section: Geological Settingmentioning

confidence: 99%

“…Before the instrumental period, intensities up to VIII were recorded in the Teruel basin (year 1656), VI-VII in the Albarracín massif (1848), and IV-V in the Jiloca graben (1828). Focal depths are always less than 25 km, and typically range from 5 to 15 km, which corresponds to the brittle layer above the basal detachment level, 10-15 km deep, identified by Roca and Guimerà (1992). Most of the available focal mechanisms correspond to normal faults striking around N-S (those numbered as 1, 2, 3, 6 in Fig.…”

Section: Slip Ratesmentioning

confidence: 99%

Active extensional faults in the central-eastern Iberian Chain, Spain

Simón¹,

Arlegui²,

Lafuente³

et al. 2012

Journal of Iberian Geology

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Among the conspicuous extensional structures that accommodate the onshore deformation of the Valencia Trough at the centraleastern Iberian Chain, a number of large faults show evidence of activity during Pleistocene times. At the eastern boundary of the Jiloca graben, the Concud fault has moved since mid Pliocene times at an average rate of 0.07-0.08 mm/y, while rates from 0.08 to 0.33 mm/y have been calculated using distinct stratigraphic markers of Middle to Late Pleistocene age. A total of nine paleoseisms associated to this fault have been identified between 74.5 and 15 ka BP, with interseismic periods ranging from 4 to 11 ka, estimated coseismic displacements from 0.6 to 2.7 m, and potential magnitudes close to 6.8. The other master faults of the Jiloca graben (Calamocha and Sierra Palomera faults) have also evidence of Pliocene to Late Pleistocene displacement, with average slip rates of 0.06 and 0.11-0.15 mm/y, respectively. At the eastern boundary of the Teruel graben, the Sierra del Pobo fault has been active since Late Miocene times, at slip rates of 0.06-0.11 mm/y. Quaternary activity its better constrained for the Teruel fault, which offsets two fluvial terraces, with an estimated slip rate of 0.12 mm/y since 76 ka BP. A widespread, NNE-SSW trending fault system extends over the easternmost Iberian Chain (Maestrat sector), with abundant proofs of activity during Early to Middle Pleistocene s.l. times. Nevertheless, such proofs are mainly geomorphologic, while dated stratigraphic markers allowing precise assessment of slip rates are absent.

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“…Malinverno and Ryan, 1986;Royden, 1993;Serri et al, 1993;Gueguen et al, 1998;Doglioni et al, 1999;Jolivet et al, 1999;Gelabert et al, 2002). Two tectonic phases have been defined in the València trough since the Neogene (Roca, 1992;Roca and Guimera, 1992;Roca, 1996;Roca et al, 1999a;Roca, 2001;…”

Section: Geological and Seismotectonic Settingsmentioning

confidence: 99%

An active zone characterized by slow normal faults, the northwestern margin of the València trough (NE Iberia): a review

Perea

Masana

Santanach

2012

Journal of Iberian Geology

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An active zone characterized by slow normal faults, the northwestern margin of the València trough (NE Iberia): a review Abstract The northwestern margin of the Valencia trough is an area of low strain characterized by slow normal faults and low to moderate seismicity. Since the mid 1990s this area has been the subject of a number of studies on active tectonic which have proposed different approaches to the location of active faults and to the calculation of the parameters that describe their seismic cycle. Fifty-six active faults have been found and a classification has been made in accordance with their characteristics: a) faults with clear evidence of large paleo-, historic or instrumental earthquakes (2/56); b) faults with evidence of accumulated activity during the Plio-Quaternary and with associated instrumental seismicity (7/56); c) faults with evidence of accumulated activity during the Plio-Quaternary and without associated instrumental seismicity (17/56); d) faults with associated instrumental seismicity and without evidence of accumulated activity during the Plio-Quaternary (30/56), and e) faults without evidence of activity or inactive faults. The parameters that describe the seismic cycle of these faults have been evaluated by different methods that use the geological data obtained for each fault except when paleoseismological studies were available. This classification can be applied to other areas with low slip faults because of the simplicity of the approaches adopted. This study reviews the different approaches proposed and describes the active faults located, highlighting the need a) to better understand active faults in slow strain zones through paleoseismological studies, and b) to include them in seismic hazard studies.

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The Neogene structure of the eastern Iberian margin: Structural constraints on the crustal evolution of the Valencia trough (western Mediterranean)

Cited by 198 publications

References 21 publications

Geophysical characterization of buried active faults: the Concud Fault (Iberian Chain, NE Spain)

Geophysical characterization of buried active faults: the Concud Fault (Iberian Chain, NE Spain)

Active extensional faults in the central-eastern Iberian Chain, Spain

An active zone characterized by slow normal faults, the northwestern margin of the València trough (NE Iberia): a review

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