Abstract
The aim of this study is the geomorphological analysis of neotectonic deformation in the Avaj region in the NW part of the Iranian Plateau. We use observations from detailed field surveys and the analysis of digital elevation model (DEM) and satellite images (Landsat-7 ETM+, 30-m resolution) to explore a new E-W trending strike-slip fault system in the study area. The major active faults of the Avaj region are the NW-SE trending Avaj and Hassanabad fault zones. The Avaj Fault is a SW-dipping reverse fault with a transport toward NE and the Hassanabad Fault is a NE-dipping reverse fault that has moved Paleozoic rocks over Cenozoic sedimentary units. Moreover, there are some E-W trending left-lateral strike-slip faults which cut Late Quaternary deposits. The relationship between the NW-SE and E-W faults indicates that the slip at the termination of the NW-SE faults changes from reverse to left-lateral strike-slip faults. The activity of the left-lateral faults has formed a series of offsets and displacements in drainage paths. These left-lateral faults probably initiated in 5±2 Ma because of the convergence between the Central Iran and the South Caspian blocks.
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Alipoor R, Poorkermani M, Zare M, El Hamdouni R (2011) Active tectonic assessment around Rudbar Lorestan dam site, High Zagros Belt (SW of Iran). Geomorphology, 128: 1–14. https://doi.org/10.1016/j.geomorph.2010.10.014
Alipoor R, Zare M, Ghassemi MR (2012) Inception of activity and slip rate on the Main Recent Fault of Zagros Mountains, Iran. Geomorphology 175-176: 86–97. https://doi.org/10.1016/j.geomorph.2012.06.025
Allen MB, Kheirkhah M, Emami MH, Jones SJ (2011) Right-lateral shear across Iran and kinematic change in the Arabia- Eurasia collision zone. Geophysical Journal International, 184: 555–574. https://doi.org/10.1111/j.1365-246X.2010.04874.x
Ambraseys NN, Melville CP (1982) A History of Persian Earthquakes, Cambridge Earth Science Series. Cambridge University Press, London. p 212. https://www.amazon.com/History-Persian-Earthquakes-Cambridge-Science/dp/0521021871
Axen GJ, Lam PJ, Grove M, et al. (2001) Exhumation of the west central Alborz Mountains, Iran, Caspian subsidence, and collision related tectonics. Geology, 29: 559–562. https://resolver.caltech.edu/CaltechAUTHORS:20130820-131207518
Berberian M (1983) The southern Caspian: a compressional depression floored by a trapped, modified oceanic crust. Canadian Journal of Earth Sciences, 20: 163–183. https://doi.org/10.1139/e83-015
Berberian M, King GCP (1981) Towards a paleogeography and tectonic evaluation of Iran. Canadian Journal of Earth Sciences, 18: 210–265. https://doi.org/10.1139/e81-019
Bolourchi MH (1979) Geological Quadrangle Map of the KabudarAhang (Scale 1:250,000). Geological Survey of Iran, Tehran.
Coplay A, Jackson J(2006) Active tectonics of the Turkish- Iranian Plateau. Tectonics, 25, TC6006. https://doi.org/10.1029/2005TC001906
Gheitanchi MR (2004) The June 22nd 2002 Changureh-Avaj earthquake in Qazvin province, north central Iran. Journal of Earth and Space Physics, 30: 23–30. https://doi.org/10.1111/j.1365-246X.2005.02516.x
Jackson J, Priestley K, Allen M, Berberian M(2002) Active tectonics of the South Caspian Basin. Geophysical Journal International, 148: 214–245. https://doi.org/10.1046/j.1365-246X.2002.01588.x
Priestley KF, Baker C, Jackson J(1994) Implications of earthquake focal mechanism data for the active tectonics of the south Caspian basin and surrounding regions. Geophysical Journal International, 118: 111–141. https://doi.org/10.1111/j.1365-246X.1994.tb04679.x
Replumaz A, Lacassin R, Tapponnier P, Leloup PH (2001) Large river offsets and Plio-Quaternary dextral slip rate on the Red River fault (Yunnan, China). Journal of Geophysical Research, 106: 819–836. https://doi.org/10.1029/2000JB900135
Ritz JF, Nazari H, Salamati R, et al. (2006) Active transtension inside Central Alborz: a new insight into the northern Iran- southern Caspian geodynamics. Geology, 34: 477–480. https://doi.org/10.1130/G22319.1
Stöclin J (1968) Structural history and tectonics of Iran: a review. American Association of Petroleum Geology Bulletin, 52: 1229–1258. https://doi.org/10.1306/5D25C4A5-16C1-11D7-8645000102C1865D
Talebian M, Jackson J(2002) Offset on the main recent fault of NW Iran and implications on the late Cenozoic tectonics of the Arabia-Eurasia collision zone. Geophysical Journal International, 150: 422–439. https://doi.org/10.1046/j.1365-246X.2002.01711.x
Toori M, Seyitoglu G(2014) Neotectonics of the Zanjan-Kazvin area, Central Iran: Left lateral strike slip induced. Turkish Journal of Earth Sciences, 23: 260–276. https://doi.org/10.3906/kim-1210-57
Walker RT, Bergman E, Jackson J, et al. (2005) The 2002 June 22 Changureh (Avaj) earthquake in Qazvin province, northwest Iran: epicentral relocation, source parameters, surface deformation and geomorphology. Geophysical Journal International, 160: 707–720. https://doi.org/10.1111/j.1365-246X.2005.02516.x
Wallace RE (1968) Notes on stream channels offset by the San Andreas Fault, Southern Coast Ranges, California. Geological Sciences Stanford University Publications, 11: 6–20. http://activetectonics.asu.edu/ActiveFaultingSeminar/Papers/ Wallace_1968_Stream_Channels_Offset.pdf
Yan B, Lin A(2015) Systematic deflection and offset of the Yangtze River drainage system along the strike-slip Ganzi-Yushu-Xianshuihe Fault Zone, Tibetan Plateau. Journal of Geodynamics, 87: 13–25. https://doi.org/10.1016/j.jog.2015.03.002
Zanchetta S, Zanchi A, Villa IM, et al. (2009) The Shanderman eclogites: A late Carboniferous high-pressure event in the NW Talesh Mountains (NW Iran). Geological Society of London, Special Publications, 312: 57–78. https://doi.org/10.1144/SP312.4
Zare M (2003) Seismotectonic of south Ghazvin plain and stress situation in the Buin-Zahra 1962 and Changureh 2002 Earthquakes prone areas. Proceedings of the 4th International Conference of Earthquake Engineering and Seismology, 2003, Tehran, Abstracts No.213. p 1596. https://www.civilica.com/Paper-SEE04-SEE04_ST11.html
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The authors would like to thank H. Mohseni who made an editorial revision of the original draft of the manuscript. We also thank Arash Moradi for editorial assistance.
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Alipoor, R., Sadr, A.H. & Ghamarian, S. Neotectonics of the Avaj region (NW Iran): left-lateral strike-slip and range-parallel reverse faults. J. Mt. Sci. 17, 838–850 (2020). https://doi.org/10.1007/s11629-019-5688-0
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DOI: https://doi.org/10.1007/s11629-019-5688-0