Seismotectonic Evaluation of Thrusts and Hidden Fault Zones in Mokhtaran Region, East Iran

Authors

1 Department of Geology, University of Birjand,Iran.

2 Department of Geology, University of Birjand, Iran

3 International Institute of Earthquake Engineering and Seismology

Abstract

The active deformation of Mokhtaran area(eastern Iran) is recognized by distributed the Esmaeilabad strike slip fault termination blind thrusts and Giv– Mokhtaran strike slip fault system in the NW trending south of the Bagharan kuh mountains. The spatial distribution of earthquake epicentres in a rose diagram derived from fry analysis is confirm activation of the Giv fold system and existence of E-W trending Comparison of mapping of the fractal dimension of the active faults and earthquake epicentres show activity of linear seismogenic source in the NW- SE trending. It is likely formation of asperity at the end of the termination splays and the Giv fold system segments to study the mapping of the b value. For evaluation of the active deformation and seismic hazard area should be considered the E-W basement faults( Left lateral shearing and rotation) in operation.
 

Keywords

References

ترابی زاده. ح.، 1381، بررسی لرزه زمین ساخت منطقه بیرجند با تاکید بر عملکرد گسل پویای گیو، پایان نامه کارشناسی ارشد.
خطیب.م.م.، شهریاری.س.، 1377، هندسه پایانه گسل های امتداد لغز، پایان نامه دکتری،ص 45-18.
زمانی بابگهری.م.، خطیب.م.م.، میراب شبستری.غ.ر.، 1388، ارزیابی دوره های فعالیت پاره های گسل گیو با استفاده از تراورتن های همزاد با زمین لرزه، پایان نامه کارشناسی ارشد.
Aki.K., 1984, Asperities, barriers, characteristic earthquakes and strong motion prediction, J. Geophys. Res., Vol:89, p: 5867-5872.
Alvarez-Ramirez.J., Echeverria.J.C., Ortiz-Cruz.A., Hernandez.E., 2012, Temporal and spatial variations of seismicity scaling behavior in Southern México, Journal of Geodynamics, Vol:54, p:1– 12.
Ambraseys.N.N. and Melville.C.P., 1982, A History of Persian Earthquakes, Cambridge Univ. Press, New York.
Barton.D.J., Foulger.G.R., Henderson.J.R. and Julian.B.R., 1999, Frequency–magnitude statistics and spatial correlation dimensions of earthquakes at Long Valley caldera, California, Geophys.J. Int., Vol:138, p:563-570.
Bayasgalan.A., Jackson.J., Ritz. J.F., Carretier.S., 1999, Field examples of strike-slip fault terminations in Mongolia and their tectonic significance,Tectonics, Vol:18, p:394 – 411.
Berberian,M., Yeats.R.S., 1999, Patterns of historical earthquake rupture in the Iranian plateau, Bulletin of the Seismological Society of America, Vol:89, p:120–139.
Berberian.M, 1995, Master blind thrust faults hidden under the Zagros folds: active basement tectonics and surface morphotectonics, Tectonophysics, Vol:241, p:193-224.
Berberian.M., Jackson.J.A., Qorashi.M., Talebian.M., Khatib.M., Priestley.K., 2000, The 1994 Sefidabeh earthquakes in eastern Iran: blind thrusting and bedding plane slip on a growing anticline, and active tectonics of the Sistan suture zone, Geophys.J.Int., Vol: 142, p:283–299.
Bhattacharya.p.M., Majumdar.R.K., Kayal.J.R., 2002, Fractal dimension and b-value mapping in northeast India, Curr Sci, Vol:82, 1486-1491.
Bilim.F., Ates.A., 2003, Analytic signal inferred reduced to the pole data, Blaken geophysical Society, Vol:6, p:66-74.
Bonilla.M.G., Mark.R.K., Lienkaemper.J.J., 1984, Statistical relation among earthquake magnitude, surface rupture length and surface displacement, Bull. Seism. Am., Vol:74, p:2379-2411.
Boyce.J.I. and Morris.W.A., 2002, Basement-controlled faulting of Paleozoic strata in southern Ontario, Canada: new evidence from geophysical lineament mapping, Tectonophysics, Vol:353, p:151– 171.
Cooper.G.R.J., Cowan.D.R.,2004, Filtering using variable order vertical derivatives, Computer and Geosciences, Vol:30, p:455-459.
Dimri.V.P., 2000, Fractal behavior of the earth system, Springer, Berlin.
Engdahl.E.R., Vander Hilst.R., Buland.R., 1998, Global teleseismic earthquake relocation with improved travel times and procedures for depth determination, Bulletin of the Seismological Society of America, Vol:88, p:722–743.
Forrest.S.R. and Witten.T.A., 1979, Long range correlation in smoke particle aggregates, Journal of physics, Vol:12, No:5, pp: 109-117.
Fry.N., 1979, Random point distributions and strain measurement in rocks, Tectonophysics , Vol:60, p:89–105.
Grassberger.P. and Procaccia.L., 1983, Measuring the strangeness of strange attractors, Physica, Vol:9, p:189-208.
Grauch.V.J. and Cordell.L., 1987, Limitations of determining density or magnetic boundaries from horizontal gradient of gravity or pseudogravity data, Geophysics, Vol:52, p:118-124.
Henderson.J.R. and Main.I.G., 1992, A simple fracture-mechanical model for the evolution ofseismicity, Geophys. Res. Lett., Vol:19, p:365-368.
Henderson.J.R., Main.I.G., Pearce.R.G. and Takeya.M., 1994, Seismicity in north-eastern Brazil: fractal clustering and the evolution of the B-value, Geophys.J. Int., Vol:116, p:217–226.
Hirata.T. ,Satoh.T. and Ito.K., 1987,  Fractal structure of spatial distribution of microfracturing in rock, Geophys.J. R. Astron. Soc, Vol:90, p: 369-374.
Hirata.T., 1989, A Correlation between the b- value and the fractal dimension of earthquake, Journal of Geophysical Research, Vol:94, p:7507–7514.
Hsu.S.K., Coppense.D., Shyu.C.T., 1998, High resolution detection of geologic boundaries from potential field anomalies, Anenhanced analytic signal technique, Geophysics, Vol:61, p:1947-1957.
 
 
 
 
 
Jackson.J., Bouchon.M., Fielding.E., Funning.G., Ghorashi.M., Hatzfeld.D., Nazari.H., Parsons.B., Priestley.K., Talebian.M., Tatar.M., Walker.R., Wright.T., 2006, Seismotectonic, rupture-process, and earthquake-hazard aspects of the 26 December 2003 Bam, Iran, earthquake. Geophysical Journal International, Vol:163, p:90-105.Kagan.Y.Y. and Knopoff.L., 1980, Spatial distribution of earthquakes: The two-point correlation function, Geophys J
 
 

Files

Share

How to cite

Statistics