The present‐day deformation of the central Zagros from GPS measurements

[1] In 1997 and in 2000, we measured the distances between 14 geodetic benchmarks across the central Zagros mountain belt. The results show that about 10 mm/yr of shortening in the central Zagros is distributed across the mountain belt. This shortening corresponds to roughly 50% of the total convergence between Arabia and Eurasia and is consistent in direction. The Persian Gulf does not deform significantly. The Main Zagros Reverse Fault is not an active kinematic boundary. The internal deformation of the folded belt is rather homogeneous, at the scale of our survey, which does not allow us to detect any individual active blind fault. However, the strain pattern suggests that N-S dextral strike slip faults may accommodate part of the deformation.

[1]  M. Berberian.  Master “blind” thrust faults hidden under the Zagros folds: active basement tectonics and surface morphotectonics , 1995 .

[2]  James Jackson,et al.  The relationship between plate motions and seismic moment tensors, and the rates of active deformation in the Mediterranean and Middle East , 1988 .

[3]  R. Stoneley.  The geology of the Kuh-e Dalneshin area of southern Iran, and its bearing on the evolution of southern Tethys , 1981, Journal of the Geological Society.

[4]  N. L. Falcon.  Southern Iran: Zagros Mountains , 1974, Geological Society, London, Special Publications.

[5]  Richard G. Gordon,et al.  Effect of recent revisions to the geomagnetic reversal time scale on estimates of current plate motions , 1994 .

[6]  K. Priestley,et al.  Earthquakes on the Kazerun Line in the Zagros Mountains of Iran: strike‐slip faulting within a fold‐and‐thrust belt , 1993 .

[7]  J. Stöcklin,et al.  Possible Ancient Continental Margins in Iran , 1974 .

[8]  Demitris Paradissis,et al.  Global Positioning System constraints on plate kinematics and dynamics in the eastern Mediterranean and Caucasus , 2000 .

[9]  James Jackson,et al.  Active tectonics of the Alpine—Himalayan Belt between western Turkey and Pakistan , 1984 .

[10]  S. J. Haynes,et al.  Evolution of the Zagros Suture Zone, Southern Iran , 1974 .

[11]  J. Tchalenko,et al.  Seismicity and structure of the Zagros (Iran): the Main Recent Fault between 33 and 35° N , 1974, Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences.

[12]  F. Masson,et al.  Tectonic Implications of GPS Measurements In Iran. , 2002 .

[13]  James Jackson,et al.  The accommodation of Arabia‐Eurasia Plate convergence in Iran , 1995 .