Global Positioning System measurements of present‐day crustal movements in the Arabia‐Africa‐Eurasia plate collision zone

Reilinger, Robert; McClusky, S.; Oral, Mustafa; King, Robert W.; Toksöz, M. Nafi; Barka, Aykut; Kinik, Ibrahim; Lenk, Onur; Sanli, I.

doi:10.1029/96jb03736

Cited by 617 publications

(352 citation statements)

References 37 publications

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“…Regional GPS networks indicate fault-parallel vectors with strain-rates in the northern part of the Anatolian block up to 25 ± 5 mm/yr (Reilinger et al, 1997 and2000;Straub et al, 1997;McClusky et al, 2000;Kahle et al, 1999 and2000) (Fig. 1).…”

Section: The North Anatolian Fault Zone (Nafz)mentioning

confidence: 99%

Preliminary slip rate estimates for the Düzce segment of the North Anatolian Fault Zone from offset geomorphic markers

2008

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Section: The North Anatolian Fault Zone (Nafz)mentioning

confidence: 99%

Preliminary slip rate estimates for the Düzce segment of the North Anatolian Fault Zone from offset geomorphic markers

2008

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“…The deformation is dominated by continental collision in eastern Turkey between the northward marching Arabian plate with respect to Europe with which it collided some 25 Ma ago (1)(2)(3) and by the activities of the Hellenic and Cyprian subduction zones in the south and southwest (1,(4)(5)(6)(7)(8)(9)(10). A c. 20 mm∕y rightlateral strike-slip motion along the North Anatolian Fault Zone (NAFZ) and 9 mm∕y left-lateral motion along the East Anatolian Fault (EAF) accommodate the westward escape of Anatolia.…”

mentioning

confidence: 99%

Crust-mantle mechanical coupling in Eastern Mediterranean and Eastern Turkey

Özeren

2012

Proc. Natl. Acad. Sci. U.S.A.

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Present-day crust-mantle coupling in the Eastern Mediterranean and eastern Turkey is studied using the Global Positioning System (GPS) and seismic anisotropy data. The general trend of the shear wave fast-splitting directions in NE Turkey and Lesser Caucaus align well with the geodetic velocities in an absolute plate motion frame of reference pointing to an effective coupling in this part of the region of weak surface deformation. Farther south, underneath the Bitlis Suture, however, there are significant Pn delays with E-W anisotropy axes indicating significant lateral escape. Meanwhile, the GPS reveals very little surface deformation. This mismatch possibly suggests a decoupling along the suture. In the Aegean, the shear wave anisotropy and the Pn anisotropy directions agree with the extensional component of the right-lateral shear strains except under the Crete Basin and other parts of the southern Aegean Sea. This extensional direction matches perfectly also with the southward pulling force vectors across the Hellenic trench; however, the maximum right-lateral shear directions obtained from the GPS data in the Aegean do not match either of these anisotropies. Seismic anisotropy from Rayleigh waves sampled at 15 s, corresponding to the lower crust, match the maximum right-lateral maximum shear directions from the GPS indicating decoupling between the crust and the mantle. This decoupling most likely results from the lateral variations of the gravitational potential energies and the slab-pull forces.

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“…The first one is the Aegean-Cyprian Arc, where the African plate subducts beneath the Anatolian Plate to the north (Papazachos & Comninakis 1971;McKenzie 1978;engör & Y1lmaz 1981;Meulenkamp et al 1988;Mart & Woodside 1994). The second one is the sinistral Dead Sea transform-fault system accommodating motion between Africa and Arabia ( engör & Y1lmaz 1981;Gülen et al 1987;DeMets et al 1990;Barka & Reilinger 1997;Reilinger et al 1997). Consequently, Anatolia is forced to move westward.…”

Section: Tectonic Frameworkmentioning

confidence: 99%

The role of oroclinal bending in the structural evolution of the Central Anatolian Plateau: evidence of a regional changeover from shortening to extension

Özsayın¹,

Dirik²

2011

Geologica Carpathica

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Abstract:The NW-SE striking extensional I · nönü-Eski ehir Fault System is one of the most important active shear zones in Central Anatolia. This shear zone is comprised of semi-independent fault segments that constitute an integral array of crustal-scale faults that transverse the interior of the Anatolian plateau region. The WNW striking Eski ehir Fault Zone constitutes the western to central part of the system. Toward the southeast, this system splays into three fault zones. The NW striking Il1ca Fault Zone defines the northern branch of this splay. The middle and southern branches are the Yeniceoba and Cihanbeyli Fault Zones, which also constitute the western boundary of the tectonically active extensional Tuzgölü Basin. The Sultanhan1 Fault Zone is the southeastern part of the system and also controls the southewestern margin of the Tuzgölü Basin. Structural observations and kinematic analysis of mesoscale faults in the Yeniceoba and Cihanbeyli Fault Zones clearly indicate a two-stage deformation history and kinematic changeover from contraction to extension. N-S compression was responsible for the development of the dextral Yeniceoba Fault Zone. Activity along this structure was superseded by normal faulting driven by NNE-SSW oriented tension that was accompanied by the reactivation of the Yeniceoba Fault Zone and the formation of the Cihanbeyli Fault Zone. The branching of the I · nönü-Eski ehir Fault System into three fault zones (aligned with the apex of the Isparta Angle) and the formation of graben and halfgraben in the southeastern part of this system suggest ongoing asymmetric extension in the Anatolian Plateau. This extension is compatible with a clockwise rotation of the area, which may be associated with the eastern sector of the Isparta Angle, an oroclinal structure in the western central part of the plateau. As the initiation of extension in the central to southeastern part of the I · nönü-Eski ehir Fault System has similarities with structures associated with the Isparta Angle, there may be a possible relationship between the active deformation and bending of the orocline and adjacent areas.

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Global Positioning System measurements of present‐day crustal movements in the Arabia‐Africa‐Eurasia plate collision zone

Abstract: Abstract. We present and interpret Global Positioning System (GPS) measurements of crustal

Cited by 617 publications

References 37 publications

Preliminary slip rate estimates for the Düzce segment of the North Anatolian Fault Zone from offset geomorphic markers

Preliminary slip rate estimates for the Düzce segment of the North Anatolian Fault Zone from offset geomorphic markers

Crust-mantle mechanical coupling in Eastern Mediterranean and Eastern Turkey

The role of oroclinal bending in the structural evolution of the Central Anatolian Plateau: evidence of a regional changeover from shortening to extension

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