Yussuf: ME017

Identification - compilation

Identification

Identification code :

ME017

Fault name :

Yussuf

Identification method :

Marine geophysical methods (MCS)

Geological and geographical set :

Alboran Sea (Offshore Africa)

Compilation

Name/s of the compiler/s :

García-Mayordomo, J., Canora, C. and Perea, H.

Filiation/s :

IGME, UCM, UAM

E-mail :

julian.garcia@igme.es

Latest update :

2019-11-05

Location

Geometry and kinematics

Conventions

Variability/Error

Source

Brief comment

Average strike (º) :

100

Variability/Error:

± 5

Source:

Brief comment:

Martínez-García et al. (2011, 2013, 2017), Gómez de la Peña (2017), Perea et al. (2012).

Dip (º) :

Variability/Error:

± 30

Source:

Brief comment:

Gómez de la Peña (2017), Martínez-García et al. (2011, 2013, 2017), Perea et al. (2012)

Rake (º) :

170

Variability/Error:

± 10

Source:

Brief comment:

Álvarez-Gómez et al. (2011). Slight reverse character (transpressional), particularly at its NW end where it links with the Alboran Ridge Fault System.

Sense of movement :

Variability/Error:

Source:

Brief comment:

Gómez de la Peña (2017), Martínez-García et al. (2011, 2013, 2017), Perea et al. (2012)

Length (km) :

180

Variability/Error:

± 5

Source:

Brief comment:

To the W connects to the Alboran Rigde Fault. To the E forms the Yussuf basin. 2 sections could be differentiated based on early stage of evolution of Yussuf basin (Gómez, 2017). Perea et al (2018) suggest connection with Averroes fault (ME032).

Min depth (km) :

Variability/Error:

Source:

Brief comment:

Surface expression and scarps. Martínez-García et al. (2011, 2013, 2017), Gómez de la Peña (2017), Perea et al. (2012)

Max depth (km) :

Variability/Error:

± 1

Source:

Brief comment:

The fault separates two different types of crust (Gómez de la Peña, 2017). Lower depth of the instrumental seismicity according to IGN online seismic data base is 11 km.

Width (km) :

Variability/Error:

Source:

Brief comment:

Area (km²) :

1800

Variability/Error:

Source:

Brief comment:

Quaternary activity Strength: A+

Variability/Error

Source

Brief comment

Quaternary activity evidence :

Prominent submarine lineament, high slope gradients, sea floor expression, offset present-day sediments and Quaternary reflectors.

Variability/Error:

Source:

Brief comment:

Mauffret et al. (1992), Perea et al. (2012), Martínez-García et al. (2011, 2013, 2017), Gómez de la Peña (2017)

Age of the youngest deposits or landforms affected by the fault :

Holocene

Variability/Error:

Source:

Brief comment:

Mauffret et al. (1992), Perea et al. (2012), Martínez-García et al. (2011, 2013, 2017), Gómez de la Peña (2017)

Slip rate Accuracy: B

Variability/Error

Source

Brief comment

Vertical Slip Rate VSR (m/ky) :

Variability/Error:

Source:

Brief comment:

Asssumed negligible.

Horizontal Slip Rate HSR (m/ky) :

3.9

Variability/Error:

3.1-4.7

Source:

Brief comment:

Based on Gómez de la Peña (2017) dextral strike slip offset estimation (16.6 - 25 km), which considers that it is 10-15% of the depth of the Yussuf pull apart basin (2.5 km), and the age of the M reflector (5.33 ma) (base of Pliocene).

Net Slip Rate NSR (m/ky) :

3.9

Variability/Error:

3.1-4.7

Source:

Brief comment:

Asssumed pure strike-slip.

Paleoearthquakes

Variability/Error

Source

Brief comment

Net slip per event at the Surface (m) :

Variability/Error:

Source:

Brief comment:

Unknown

Number of Seismic Events :

Variability/Error:

Source:

Brief comment:

Unknown

Evidence of aseismic creep? :

Variability/Error:

Source:

Brief comment:

Unknown

Seismic parameters

Variability/Error

Source

Brief comment

Maximum magnitude (Mw) :

7.2

Variability/Error:

± 0.15

Source:

Brief comment:

Average value from Gómez de la Peña (2017) based on Wells & Coppersmith (1994), Wesnousky (2008) and Stirling et al. (2008).

Recurrence interval (years) :

Variability/Error:

Source:

Brief comment:

Unknown

Date of last major earthquake (years) :

Variability/Error:

Source:

Brief comment:

Unknown

Extended data and references

Explanation :

ME017-ME020.rar

References :

Álvarez-Gómez, J. A., Aniel-Quiroga, Í., González, M., Olabarrieta, M., Carreño, E., 2011. Scenarios for earthquake-generated tsunamis on the Alboran Sea, Western Mediterranean. Marine Geology, 284:55-73.

Gómez de la Peña, L. (2017) The origin and tectono-sedimentary structure of the Alboran Basin. Tesis doctoral, Universidad de Barcelona, 327 pp.

Martínez-García, P., Soto, J.I. & Comas, M. (2011). Recent structures in the Alboran Ridge and Yusuf fault zones based on swath bathymetry and sub-bottom profiling: evidence of active tectonics. Geo-Mar. Lett., 31, 16–39. doi:10.1007/s00367-010-0212-0.

Martínez-García, P., Comas, M., Soto, J.I., Lonergan, L. & Watts, A.B. (2013). Strike-slip tectonics and basin inversion in the Western Mediterranean: the Post-Messinian evolution of the Alboran Sea. Basin Research (2013) 25, 1–27, doi: 10.1111/bre.12005.

Martínez-García, P., Comas, M., Lonergan, L., & Watts, A. B. (2017). From extension to shortening: Tectonic inversion distributed in time and space in the Alboran sea, western Mediterranean. Tectonics, 36, 2777–2805. doi:10.1002/2017TC004489

Mauffret A, Maldonado A, Campillo AC (1992) Tectonic framework of the eastern Alboran and western Algerian basins, western

Mediterranean. Geo Mar Lett 12(2/3):104–110. doi:10.1007/ BF02084919

Perea, H., Gràcia, E., Bartolomé, R., Ranero, C.R., Lo Iacono, C., Martínez- Loriente, S., Moreno, X.and EVENT-DEEP and TOPOMED-GASSIS teams (2012) The strike-slip Yussuf fault system (Alboran Sea): Multi-scale seismic imaging and evidences of Quaternary activity. Abstract in PANAF meeting, Istambul, October 8- 10, 2012.

Perea, H., Gràcia, E., Martínez-Loriente, S., Bartolomé, R., gómez de la Peña, L., de Mol, B., Moreno, X., Lo Iacono, C., Diez, S., Tello, O., gómez-Ballesteros, M. and Dañobeitia, J.J. (2018) Kinematic analysis of secondary faults within a distributed shear-zone reveals fault linkage and increased seismic hazard. Marine Geology, 399: 23–33. https://doi.org/10.1016/j.margeo.2018.02.002

Stirling, M., Gerstenberger, M., Litchfiels, N., Mcverry, G., Smith, W., Pettinga, J. and Barnes, P. 2008. Seismic hazard of the Canterbury region, New Zealand: Nes earthquake source model and mehtodology. Bull. New. Zel. Soc. Earthqu. Eng. 41(2): 51-67.

Wells, D. L., and Coppersmith, K. J. (1994). New empirical relationships among magnitude, rupture length, rupture width, and surface displacement. Bulleting of the Seismological Society of America 84, 974-1002.

Wesnousky, S.G., 2008. Displacement and geometrical characteristics of earthquake surface ruptures: issues and implications for seismic-hazard analysis and the process of earthquake rupture. Bull. Seismol. Soc. Am. 98, 1609–1632. http://dx.doi.org/10.1785/0120070111.

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