An exceptionally long paleoseismic record of a slow-moving fault: The Alhama de Murcia fault (Eastern Betic shear zone, Spain)

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Standard

An exceptionally long paleoseismic record of a slow-moving fault: The Alhama de Murcia fault (Eastern Betic shear zone, Spain). / Ortuño, María.; Masana, Eulalia.; García-Meléndez, Eduardo.; Martínez-Díaz, José.; Štěpančíková, Petra.; Cunha, Pedro P.; Sohbati, Reza; Canora, Carolina.; Buylaert, Jan-Pieter; Murray, Andrew S.

In: Geological Society of America. Bulletin, Vol. 124, No. 9-10, 2012, p. 1474-1494.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Harvard

Ortuño, M, Masana, E, García-Meléndez, E, Martínez-Díaz, J, Štěpančíková, P, Cunha, PP, Sohbati, R, Canora, C, Buylaert, J-P & Murray, AS 2012, 'An exceptionally long paleoseismic record of a slow-moving fault: The Alhama de Murcia fault (Eastern Betic shear zone, Spain)' Geological Society of America. Bulletin, vol 124, no. 9-10, pp. 1474-1494., 10.1130/B30558.1

APA

Ortuño, M., Masana, E., García-Meléndez, E., Martínez-Díaz, J., Štěpančíková, P., Cunha, P. P., Sohbati, R., Canora, C., Buylaert, J-P., & Murray, A. S. (2012). An exceptionally long paleoseismic record of a slow-moving fault: The Alhama de Murcia fault (Eastern Betic shear zone, Spain). Geological Society of America. Bulletin, 124(9-10), 1474-1494. 10.1130/B30558.1

CBE

Ortuño M, Masana E, García-Meléndez E, Martínez-Díaz J, Štěpančíková P, Cunha PP, Sohbati R, Canora C, Buylaert J-P, Murray AS. 2012. An exceptionally long paleoseismic record of a slow-moving fault: The Alhama de Murcia fault (Eastern Betic shear zone, Spain). Geological Society of America. Bulletin. 124(9-10):1474-1494. Available from: 10.1130/B30558.1

MLA

Vancouver

Ortuño M, Masana E, García-Meléndez E, Martínez-Díaz J, Štěpančíková P, Cunha PP et al. An exceptionally long paleoseismic record of a slow-moving fault: The Alhama de Murcia fault (Eastern Betic shear zone, Spain). Geological Society of America. Bulletin. 2012;124(9-10):1474-1494. Available from: 10.1130/B30558.1

Author

Ortuño, María.; Masana, Eulalia.; García-Meléndez, Eduardo.; Martínez-Díaz, José.; Štěpančíková, Petra.; Cunha, Pedro P.; Sohbati, Reza; Canora, Carolina.; Buylaert, Jan-Pieter; Murray, Andrew S. / An exceptionally long paleoseismic record of a slow-moving fault: The Alhama de Murcia fault (Eastern Betic shear zone, Spain).

In: Geological Society of America. Bulletin, Vol. 124, No. 9-10, 2012, p. 1474-1494.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Bibtex

@article{84027e403a784d62861937346ebc1935,
title = "An exceptionally long paleoseismic record of a slow-moving fault: The Alhama de Murcia fault (Eastern Betic shear zone, Spain)",
publisher = "Geological Society of America",
author = "María. Ortuño and Eulalia. Masana and Eduardo. García-Meléndez and José. Martínez-Díaz and Petra. Štěpančíková and Cunha, {Pedro P.} and Reza Sohbati and Carolina. Canora and Jan-Pieter Buylaert and Murray, {Andrew S.}",
year = "2012",
doi = "10.1130/B30558.1",
volume = "124",
number = "9-10",
pages = "1474--1494",
journal = "Geological Society of America. Bulletin",
issn = "0016-7606",

}

RIS

TY - JOUR

T1 - An exceptionally long paleoseismic record of a slow-moving fault: The Alhama de Murcia fault (Eastern Betic shear zone, Spain)

A1 - Ortuño,María.

A1 - Masana,Eulalia.

A1 - García-Meléndez,Eduardo.

A1 - Martínez-Díaz,José.

A1 - Štěpančíková,Petra.

A1 - Cunha,Pedro P.

A1 - Sohbati,Reza

A1 - Canora,Carolina.

A1 - Buylaert,Jan-Pieter

A1 - Murray,Andrew S.

AU - Ortuño,María.

AU - Masana,Eulalia.

AU - García-Meléndez,Eduardo.

AU - Martínez-Díaz,José.

AU - Štěpančíková,Petra.

AU - Cunha,Pedro P.

AU - Sohbati,Reza

AU - Canora,Carolina.

AU - Buylaert,Jan-Pieter

AU - Murray,Andrew S.

PB - Geological Society of America

PY - 2012

Y1 - 2012

N2 - Most catastrophic earthquakes occur along fast-moving faults, although some of them are triggered by slow-moving ones. Long paleoseismic histories are infrequent in the latter faults. Here, an exceptionally long paleoseismic record (more than 300 k.y.) of a slow-moving structure is presented for the southern tip of the Alhama de Murcia fault (Eastern Betic shear zone), which is characterized by morphological expression of current tectonic activity and by a lack of historical seismicity. At its tip, the fault divides into a splay with two main faults bounding the Góñar fault system. At this area, the condensed sedimentation and the distribution of the deformation in several structures provided us with more opportunities to obtain a complete paleoseismic record than at other segments of the fault. The tectonic deformation of the system was studied by an integrated structural, geomorphological, and paleoseismological approach. Stratigraphic and tectonic features at six paleoseismic trenches indicate that old alluvial units have been repeatedly folded and thrusted over younger ones along the different traces of the structure. The correlation of the event timing inferred for each of these trenches and the application of an improved protocol for the infrared stimulated luminescence (IRSL) dating of K-feldspar allowed us to constrain a paleoseismic record as old as 325 ka. We identified a minimum of six possible paleo of Mw = 6–7 and a maximum mean recurrence interval of 29 k.y. This provides compelling evidence for the underestimation of the seismic hazard in the region.

AB - Most catastrophic earthquakes occur along fast-moving faults, although some of them are triggered by slow-moving ones. Long paleoseismic histories are infrequent in the latter faults. Here, an exceptionally long paleoseismic record (more than 300 k.y.) of a slow-moving structure is presented for the southern tip of the Alhama de Murcia fault (Eastern Betic shear zone), which is characterized by morphological expression of current tectonic activity and by a lack of historical seismicity. At its tip, the fault divides into a splay with two main faults bounding the Góñar fault system. At this area, the condensed sedimentation and the distribution of the deformation in several structures provided us with more opportunities to obtain a complete paleoseismic record than at other segments of the fault. The tectonic deformation of the system was studied by an integrated structural, geomorphological, and paleoseismological approach. Stratigraphic and tectonic features at six paleoseismic trenches indicate that old alluvial units have been repeatedly folded and thrusted over younger ones along the different traces of the structure. The correlation of the event timing inferred for each of these trenches and the application of an improved protocol for the infrared stimulated luminescence (IRSL) dating of K-feldspar allowed us to constrain a paleoseismic record as old as 325 ka. We identified a minimum of six possible paleo of Mw = 6–7 and a maximum mean recurrence interval of 29 k.y. This provides compelling evidence for the underestimation of the seismic hazard in the region.

U2 - 10.1130/B30558.1

DO - 10.1130/B30558.1

JO - Geological Society of America. Bulletin

JF - Geological Society of America. Bulletin

SN - 0016-7606

IS - 9-10

VL - 124

SP - 1474

EP - 1494

ER -