Document Type : Original Research Paper
Authors
Department of Geology, Faculty of Basic Science, Tarbiat Modares University, Tehran, Iran
Abstract
Geometry and kinematics analyses of structures developed along one of the transverse fault zone (Izeh) in the Zagros fold-thrust belt has been presented to document the origin and to present the effect of this fault zone on the belt structures. Surface deformation of Izeh fault zone on the cover sediments are including changes on the Zagros major structures trends and development of minor structures (such as minor folds and faults) that are overprinted on the belt major structures. Detaeled structural mapping showed the precense of three major restraining zones between the mapped subsurface en-echelon faults along the Izeh fault zone in the Zagros fold-thrust belt. Analysis of isopach maps, facies variation of formations together with interpretation of seismic reflection profiles showed that these subsurfase faults are younger orders of the Izeh fault zone reactivation as a basement fault. Oblique convergence of the Arabian Plate toward the Central Iran is in favor for the reactivation of the fault zone and formation of surface deformations along it. Based on earthquake data this reactivation is continuing until the present time. The result of this study can be used for interpretation of deformation on the sedimentary cover along the similar transvers fault zone in the Zagros fold-thrust belt.
Keywords
References
Ameen, M. S., 1992- Effect of Basement Tectonic on Hydrocarbon Generation, Migration and Accumulation in Northern Iraq. AAPG Bull. 76: 356-370.
Apotria, T. G., Snedden, W. T., Spang, J. H. & Wiltschko, D. V., 1992- Kinematic models of deformation at an oblique ramp. In: K.R. McClay, Editor, Thrust Tectonics, Chapman & Hall, pp. 141–154.
Apotria, T. G., 1995- Thrust sheet rotation and out-of-plane strains associated with oblique ramps: an example from the Wyoming salient, USA. Journal of Structural Geology. 17 : 647–662.
Authemayou, C., Chardon, D., Bellier, O., Malekzadeh, Z., Shabanian, E. & Abbassi, M. R., 2006- Late Cenozoic partitioning of oblique plate convergence in the Zagros fold-and-thrust belt (Iran), Tectonics 25 : TC3002
Bahroudi, A., Talbot, C. J., 2003- The configuration of the basement beneath the Zagros basin. Journal of Petroleum Geology, 26(3), 257-282.
Bahroudi, A., 2003- The Effect of Mechanical Characteristics of Basal Decollement and Basement Structures on Deformation of the Zagros Basin, PhD thesis, University of Uppsala, Sweden.
Barzegar, F., 1994- Basement fault mapping of E Zagros folded belt (S.W. Iran) based on space-born remotely sensed data. Proceeding of The 10th Thematic Conference On Geologic Remote Sensing: Exploration, Environment and Engineering. San Antonio, Texas. Pp: 455-466.
Baker, C., Jackson, J. & Priestley, K., 1993- Earthquakes on the Kazerun line in the Zagros Mountains of Iran: Strike- Slip Faulting within a Fold and Thrust Belt. Geophys. J. Int., 115: 41-61.
Berberian, M., 1995- Master “blind” thrust faults hidden under the Zagros folds: active basement tectonics and surface morphotectonics. Tectonophys. 241: 193-224.
Campbell, J. D., 1958- En echelon folding. Econ. Geol., 53, 448-472.
Coleman-Sadd, S. P., 1978- Fold development in the Zagros simply folded belt, SW Iran. American Association of Petroleum Geologists Bulletin 62, 984–1003.
Davoodi, Z. & Yassaghi, A., 2007- Structural Analysis of Izeh Fault Zone, An Exampel of Active Transverse Fault Zone in Zagros Fold- Thrust Belt, Iran. In: 5th International Conference on Seismology and Eaethquake Engineering, Tehran, Iran, 13-16 May.
Deffontaines, B., Lacombe, O., Angelier, J., Chu, H. T., Mouthereau, F., Lee, C. T., Deramond, J., Lee, J. F., Yu M. S. & Liew, P. M., 1997- Quaternary transfer faulting in the Taiwan Foothills: evidence from a multisource approach, Tectonophysics 274: 61–82.
Edgell, H. S., 1996- Salt tectonic in the Persian Gulf basin. In: Alsop, G. I., Blunderll, D. J. and Davison, I., Editors. Salt tectonicsGeological Society of London, Special Publication, 100:129–151.
Falcon, N. L., 1969- Problems of the relationship between surface structure and deep displacements illustrated by the Zagros range. In: Kent P., Satterthwaite G., Spencer A. (eds), Time and Place Orogeny. Geological Society of London. Pp. 9-22.
Fuh, S. C., Liu, C. S., Lundberg, N. & Reed, D., 1997 -Strike-slip faults offshore southern Taiwan: implications for the oblique arc–continent collision processes. Tectonophysics 274:25–39.
Fürst, M., 1990- Strike-slip faults and diapirism of the South-Eastern Zagros ranges. Proc. Symp. Diap. Bander Abbas, Hormozgan, Iran. 2: 149-181.
Freund, R., 1965- A model of the structural development of Israel and adjacent areas since upper Cretaceous times. Geol. Mag., 102, 189-205.
Gartrell, A., Hudson, C. & Evans, B., 2005- The influence of basement faults during extension and oblique inversion of the Makassar Straits rift system: insights from analog models, AAPG Bulletin 89(4): 495–506.
Graham, R. H., 1978- Wrench faults, arcuate folds patterns and deformation in the southern French Alps. Proc. Geol. Assoc.
Hessami, K., Koyi, H. A. & Talbot, C. J., 2001- The significance of strike slip faulting in the basement of the Zagros fold and thrust belt. J. Petrol. Geol. 24: 5-28.
Hessami, K., 2002- Tectonic History and Present-day Deformation on the Zagros Fold-Thrust Belt, PhD thesis, University of Uppsala, Sweden.
Husseini, M. L., 2000- Origin of the Arabian Plate structures: Amar collision and Najd rift. GeoArabia, 5: 527-542.
IOOC, 1969- Geological map of South-West Iran. Compiled and drawn by Geological and Exploration Division, 1:1000000.
Koop, W. & Stoneley, R., 1982- Subsidence history of the Middle East Zagros basin, Permian to Recent, Philosophical Transactions of the Royal Society of London A305: 149–168.
Lowell, J. D., 1972- Spitzbergen tertiary orogenic belt and the Spitzbergen fracture zone. Geol. Soc. Am. Bull., 83, 3091-3102.
McQuillan, H., 1991- The rol of basement tectonics in the control of sedimentary facies, structural patterns and salt plug emplacements in the Zagros fold belt of Southwest Iran. Journal of Southeast Asian Earth Sciences, 5,453-463.
McClay, K. R., Whitehouse, P. S., Dooley, M. & Richards, M., 2004- 3D evolution of fold and thrust belts formed by oblique convergence, Marine and Petroleum Geology 21: 857–877.
Motiee, H., 1995- Petroleum geology of Zagros. In: Hushmandzadeh, A.(Ed.), Treatise on the Geology of Iran. Geological Survey of Iran.
NIOC,1976- Tectonic map of south- west Iran. Scale 1:2500000, Natl. Iran. Oil. Co., Explor. And prod.,Tehran, Iran.
Odonne, F. & Vialon, P., 1983- Analogue models of folds above a wrench fault, Tectonophysics, 99, 31-46.
Odonne, F. & Costa E., 1993- Relationships between strike-slip movement and fold trends in thin-skinned tectonics: analogue models, Tectonophysics, 228, 383-391.
Pavoni, N., 1961- Die Nordanatolische horizontalverschiebung. Geol. Rundsch., 51, 122-139.
Richard, P., Ballard, J. F., Colletta, B., Cobbold, P. R., 1989- Fault initiation and development above a basement strike-slip fault: analogue modeling and tomography. Compte Rendu Acadamic des Sciences, 309( 2), 2111-2118.
Richard, P., Mocquet, B., Cobbold, P. R., 1991- Experiments on simultaneous faulting and folding above a basement wrench fault. Tectonophysics, 188(1-2), 133-141.
Richard, P., Naylor, M. A., Koopman, A., 1995- Experimental models of strike-slip tectonics. Petroleum Geoscience, 1, 71-80.
Richard, P. & Krantz, R. W., 1991- Experiments on fault reactivation in strike-slip mode. Tectonophysics, 188(1-2), 117-131.
Saintot, A. & Angelier, J., 2002- Tectonic paleostress fields and structural evolution of theNW-Caucasus fold-and-thrust belt from Late Cretaceous to Quaternary. Tectonophysics, 357: 1-31.
Sattarzadeh, Y., Cosgrove, J. W. & Vita- Finzi, C., 2000- The interplay of faulting and folding during the evolution of the Zagros deformation belt. Geological Society of London, 169, 187-196.
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