Neotectonic deformation in the Eurasia–Arabia collision zone, the East Anatolian Plateau, E Turkey: evidence from palaeomagnetic study of Neogene–Quaternary volcanic rocks

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• 作者：Z. Mümtaz Hisarlı ; Mualla Cengiz Çinku…
• 关键词：Palaeomagnetic ; Eastern Anatolia ; Tectonic rotations ; Neogene
• 刊名：International Journal of Earth Sciences
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：105
• 期：1
• 页码：139-165
• 全文大小：9,042 KB
• 参考文献：Akopyan TG, Minasyan DO (1973) Paleomagnetic directions and pole positions: data for the USSR-issue 5 catalogue. Soviet Geophysical Committee, World Data Center-B, Moscow
  Aktug B, Dikmen U, Dogru A, Ozener H (2013) Seismicity and strain accumulation around Karliova triple junction (Turkey). J Geodyn 67:21–29CrossRef
  Al-Damegh K, Sandvol E, Al-Lazki AI, Barazangi M (2004) Regional wave propagation (Sn and Lg) and Pn attenuation in the Arabian plate and surrounding regions. Geophys J Int 157:775–795CrossRef
  Al-Lazki A, Seber D, Sandvol E, Turkelli N, Mohamad R, Barazangi M (2003) Tomographic Pn velocity and anisotropy structure beneath the Anatolian plateau (eastern Turkey) and the surrounding regions. Geophys Res Lett 30(24):8043CrossRef
  Al-Lazki AI, Sandvol E, Seber D, Barazangi M, Turkelli N, Mohamad R (2004) Pn tomographic imaging of mantle lid velocity and anisotropy at the junction of the Arabian. Geophys J Int 158(3):1024–1040CrossRef
  Angus DA, Wilson DC, Sandvol E, Ni JF (2006) Lithospheric structure of the Arabian and Eurasian collision zone. Geophys J Int 166:1335–1346CrossRef
  Ayhan MA, Demir C, Kiliçcoglu A, Sanli I, Nakiboglu SM (1999) Crustal motion around the western segment of the north Anatolian fault zone: geodetic measurements and geophysical interpretation. In: International Union of Geodesy and Geophysics (IUGG 99), 18–30 July, Birmingham, UK
  Beck ME (1980) Paleomagnetic record of plate-margin tectonic processes along the western edge of North America. J Geophys Res 85:7115–7131CrossRef
  Besse J, Courtillot V (2002) Apparent and true wander and the geometry of the geomagnetic field over the last 200 Myr. J Geophys Res 107:2300–2331CrossRef
  Bol’shakov AS, Solodovnikov GM (1973) Paleomagnetic directions and pole positions: data for the USSR-issue 5 catalogue. Soviet Geophysical Committee, World Data Center-B, Moscow
  Bozkurt E, Mittweide S (2001) Introduction to the geology of Turkey—a synthesis. Int Geol Rev 43:578–594CrossRef
  Çinku MC, Orbay N (2010) The origin of Neogene tectonic rotations in the Galatean volcanic massif, central Anatolia. Int J Earth Sci 99(2):413–426CrossRef
  Cox A (1969) Research note: confidence limits for the precision parameter, K. Geophys J R Astron Soc 17:545–549CrossRef
  Deenen MH, Langereis CG, van Hinsbergen DJ, Biggin AJ (2011) Geomagnetic secular variation and the statistics of palaeomagnetic directions. Geophys J Int 186(2):509–520CrossRef
  Demarest HH (1983) Error analysis for the determination of tectonic rotation from paleomagnetic data. J Geophys Res Solid Earth 88(B5):4321–4328CrossRef
  Dewey JF, Şengör AC (1979) Aegean and surrounding regions: complex multiplate and continum tectonics in a convergent zone. Geol Soc Am Bull 90(1):84–92CrossRef
  Dewey JF, Hempton MR, Kidd WSF, Şaroğlu F, Şengör AMC (1986) Shortening of continental lithosphere: the neotectonics of Eastern Anatolia: a young collision zone. In: Coward MP, Ries AC (eds) Collision tectonics, vol 19. Geological Society of London Special Publication, pp 3–36
  Emre Ö, Duman TY, Olgun Ş, Özalp S, Elmacı H (2012) 1:250000 scale active fault map series of Turkey. General Directorate of Mineral Research and Exploration, Ankara
  Enkin RJ (2004) Paleomagnetism data analysis, ver. 4.2. Geological Survey of Canada. http://​gsc.​nrcan.​gc.​ca/​sw/​paleo_​e.​php
  Fisher RA (1953) Dispersion on a sphere. Proc R Soc Lond 217:295–305CrossRef
  Gök R, Türkelli N, Sandvol E, Seber D, Barazangi M (2000) Regional wave propogation in Turkey and surrounding regions. Geophys Res Lett 27(3):429–432CrossRef
  Gök R, Sandvol E, Türkelli N, Seber D, Barazangi M (2003) Sn attenuation in the Anatolian and Iranian plateau and surrounding regions. Geophys Res Lett 30(24):8042. doi:10.​1029/​2003GL018020 CrossRef
  Gürsoy H, Piper JDA, Tatar O, Temiz H (1997) A palaeomagnetic study of the Sivas Basin, Central Turkey: crustal deformation during lateral escape of the Anatolian Block. Tectonophysics 271:89–106CrossRef
  Gürsoy H, Piper JDA, Tatar O, Mesci L (1998) Palaeomagnetic study of the Karaman and Karapınar volcanic complexes, central Turkey: neotectonic rotation in the south-central sector of the Anatolian Block. Tectonophysics 299:191–211CrossRef
  Gürsoy H, Piper JDA, Tatar O (1999) Palaeomagnetic study of the Galatean Volcanic Province, north-central Turkey: Neogene deformation at the northern border of the Anatolian Block. Geol J 34:7–23CrossRef
  Gürsoy H, Piper JDA, Tatar O (2003) Neotectonic deformation in the western sector of tectonic escape in Anatolia; palaeomagnetic study of the Afyon region, central Turkey. Tectonophysics 374:57–79CrossRef
  Gürsoy H, Tatar O, Piper JDA, Heimann A, Koçbulut F, Mesci BL (2009) Palaeomagnetic study of Tertiary volcanic domains in Southern Turkey and Neogene anticlockwise rotation of the Arabian Plate. Tectonophysics 465:114–127CrossRef
  Gürsoy H, Tatar O, Piper JDA, Koçbulut F, Akpınar Z, Huang B, Roberts AP, Mesci BL (2011) Paleomagnetic study of Kepezdağ and Yamadağ volcanic complexes, central Turkey: Neogene tectonic escape and block definition in the central-east Anatolides. J Geodyn 51:308–326CrossRef
  Hisarlı ZM (2011) New paleomagnetic constraints on the late Cretaceous and early Cenozoic tectonic history of the Eastern Pontides. J Geodyn 52(2):114–128CrossRef
  Hubert-Ferrari A, King G, Manighetti I, Armijo R, Meyer B, Tapponnier P (2003) Long-term elasticity in the continental lithosphere; modelling the Aden Ridge propagation and the Anatolian extrusion process. Geophys J Int 153(1):111–132CrossRef
  Innocenti F, Mazzuoli R, Pasquaré G, di BrozolaF Radicati, Villari L (1976) Evolution of volcanism in the area of interaction between the Arabian, Anatolian, and Iranian plates (Lake Van, Eastern Turkey). J Volcanol Geoth Res 1:103–112CrossRef
  Innocenti F, Mazzuoli R, Pasquaré G, SerriG Villari L (1980) Geology of the volcanic area north of lake Van (Turkey). Geol Rundsch 69:292–322CrossRef
  İşseven T (2001) Paleomagnetic investigations on the Neotectonic regime of Western Anatolia. Ph. D. thesis. Istanbul Technical University Graduate School of Science Engineering and Technology, p 194
  İşseven T, Tüysüz O (2006) Palaeomagnetically defined rotations of fault-bounded continental blocks in the North Anatolian Shear Zone, North Central Anatolia. J Earth Sci 28:469–479
  Kaymakçı N, Duermeijer CE, Langeris C, White SH, Van Dijk PM (2003) Palaeomagnetic evolution of the Çankırı Basin (Central Anatolia, Turkey): implications for oroclinal bending due to indentation. Geol Mag 140:343–355CrossRef
  Keskin M (2003) Magma generation by slab steepening and break off beneath a subduction–accretion complex: an alternative model for collision-related volcanism in Eastern Anatolia, Turkey. Geophys Res Lett 30(24):8046. doi:10.​1029/​2003GL018019 CrossRef
  Keskin M (2007) Eastern Anatolia: a hotspot in a collision zone without a mantle plume. In: Foulger GR, Jurdy DM (eds) Plates, plumes, and planetary processes. Geological Society of America Special Paper, vol 430, pp 693–722. doi:10.​1130/​2007.​2430(32)
  Keskin M, Pearce JA, Mitchell JG (1998) Volcano-stratigraphy and geochemistry of collision-related volcanism on the Erzurum–Kars Plateau, North Eastern Turkey. J Volcanol Geotherm Res 85(1–4):355–404CrossRef
  Keskin M, Pearce JA, Kempton PD, Greenwood P (2006) Magma-crust interactions and magma plumbing in a post-collision setting: geochemical evidence from the Erzurum–Kars Volcanic Plateau, Eastern Turkey. In: Dilek Y, Pavlides S (eds) Postcollisional tectonics and magmatism in the Mediterranean region and Asia. Geological Society of American special paper no. 409, pp 475–505. doi:10.​1130/​2006.​2409(23)
  Keskin M, Oyan V, Sharkov EV, Chugaev AV, Genç SC, Ünal E, Aysal N, Duru O, Kavak O (2013) Magmatism and geodynamics of Eastern Turkey. In: Geophysical Research Abstracts no. 15: EGU2013-12874-2, Vienna, Austria
  Khramov AN (1973) Paleomagnetic directions and pole positions: data for the USSR-issue 5 catalogue. Soviet Geophysical Committee, World Data Center-B, Moscow
  Kirschvink L (1980) The least-squares line and plane and the analysis of palaeomagnetic data. Geophys J R Astron Soc 62:699–718CrossRef
  Kissel C, Laj A, Poission A, Savaşçın Y, Simeakis K, Mercier L (1986) New paleomagnetic data from Oligocene formations of northern Aegea. Geophys Res Lett 13(10):1039–1042CrossRef
  Kissel C, Laj A, Şengör AMC, Poission A (1987) Paleomagnetic evidence for rotation in opposite senses of adjacent blocks in northeasternAegea and western Anatolia. Geophys Res Lett 14(9):907–910CrossRef
  Kissel C, Averbuch O, de Lamotte DF, Monod O, Allerton S (1993) First paleomagnetic evidence for a post-Eocene clockwise rotation of the Western Taurides thrust belt east of the Ispartareentrant (Southwestern Turkey). Earth Planet Sci Lett 117(1):1–14CrossRef
  Koçbulut F, Akpınar Z, Tatar O, Piper JDA, Roberts AP (2013) Palaeomagnetic study of the Karacadağ Volcanic Complex, SE Turkey: monitoring Neogene anticlockwise rotation of the Arabian Plate. Tectonophysics 608:1007–1024CrossRef
  Koçyiğit A, Yilmaz A, Adamia S, Kuloshvili S (2001) Neotectonics of East Anatolian Plateau (Turkey) and Lesser Caucasus: implication for transition from thrusting to strike-slip faulting. Geodin Acta 14(1–3):177–195CrossRef
  Krijgsman W, Duermeijer CE, Langeris CG, Bruijn H, Sarac G, Andriessen PAM (1996) Magnetic polarity stratigraphy of late Oligocene–middle Miocene mammal-bearing continental deposits in central Anatolia (Turkey). Newslett Stratigr 34(1):13–29
  Lambert RST, Holland JG, Owen PF (1974) Chemical petrology of a suite of calc-alkaline lavas from Mount Ararat, Turkey. J Geol 82:419–438CrossRef
  Lebedev VA, Sharkov EV, Keskin M, Oyan V (2010) Geochronology of Late Cenozoic volcanism in the area of Van Lake, Turkey: an example of development dynamics for magmatic processes. Dokl Earth Sci 433(2):1031–1037CrossRef
  Lowrie W (1990) Identification of ferromagnetic minerals in a rock by coercivity and unblocking temperature properties. Geophys Res Lett 17:159–162CrossRef
  Maggi A, Priestley K (2005) Surface waveform tomography of the Turkish–Iranian plateau. Geophys J Int 160(3):1068–1080CrossRef
  McClusky S, Balassanian S, Barka A, Demir C, Ergintav S, Georgiev I, Gürkan O, Hamburger M, Hurst K, Kahle H, Kastens K, Kekelidze G, King R, Kotzev V, Lenk O, Mahmoud S, Mishin A, Nadariya M, Ouzounis A, Paradissis D, Peter Y, Prilepin M, Reilinger R, Sanli I, Seeger H, Tealeb A, ToksozA Veis G (2000) Global positioning system constraints on plate kinematics and dynamics in the eastern Mediterranean and Caucasus. J Geophys Res B Solid Earth Planets 105:5695–5719CrossRef
  McElhinny MW, McFadden PL (1997) Palaeosecular variation over the past 5 Myr based on a new generalized database. Geophys J Int 131:240–252CrossRef
  McFadden PL, McElhinny MW (1990) Classification of the reversal test in palaeo-magnetism. Geophys J Int 103(3):725–729CrossRef
  McKenzie DP (1970) Plate tectonics of the Mediterranean region. Nature 226(5242):239–243CrossRef
  Minasyan (1973) Paleomagnetic directions and pole positions: data for the USSR-issue 5 catalogue. Soviet Geophysical Committee, World Data Center-B, Moscow
  MTA (2002) Geological map of Turkey (1:500000 scale). General Directorate of Mineral Research and Exploration, Ankara
  Nosova AA, Sazonova LV, Dokuchaev AY, Grekov II, Gurbanov AG (2005) Neogen Late-collisional subalkaline granitoids in the area of Mineral’nye Vody, Caucasus: T-P-fo crystallization conditions, fractional and fluid-magmatic differentiation. Petrology (13):122–160
  Notsu K, Fujitani T, Ui T, Matsuda J, Ercan T (1995) Geochemical features of collision-related volcanic rocks in central and eastern Anatolia, Turkey. J Volcanol Geotherm Res 64:171–192CrossRef
  Okay AI, Şahintürk Ö (1997) Geology of the Eastern Pontides. In: Robinson AG (ed) Regional and petroleum geology of the Black Sea and surrounding region. American Association of Petroleum Geologists: AAPG memoir, vol 68. AAPG, Texas, pp 291–311
  Orbay N, Sanver M, Hisarli M, İsseven T, Ozcep F (2000) KaraburunYarimadasinin paleomagnetizmasi ve tektonik evrimi. In: Bati Anadolu’ nun Depremselliği Sempozyumu kıtabı, pp 59–67
  Oyan V (2011) The volcanostratigraphy, petrology and magmatic evolution of the Etrüsk volcano and surrounding (north of Van Lake). Unpublished Ph.D. thesis, Yüzüncü Yıl University
  Özener H, Arpat E, Ergintav S, Dogru A, Cakmak R, Turgut B, Dogan U (2010) Kinematics of the eastern part of the North Anatolian Fault Zone. J Geodyn 49(3):141–150CrossRef
  Pearce JA, Bender JF, De Long SE, Kidd WSF, Low PJ, Güner Y, Şaroglu F, Yılmaz Y, Moorbath S, Mitchell JG (1990) Genesis of collision volcanism in Eastern Anatolia, Turkey. J Volcanol Geotherm Res 44:189–229CrossRef
  Piper JDA, Gürsoy H, Tatar O, Beck ME, Rao A, Koçbulut F, Mesci BL (2010) Distributed neotectonic deformation in the Anatolides of Turkey: a palaeomagnetic analysis. Tectonophysics 488(1):31–50CrossRef
  Piromallo C, Morelli A (2003) P wave tomography of the mantle under the Alpine–Mediterrenean area. J Geophys Res 108(B2):1978–2012. doi:10.​1029/​2002JB001757
  Platzman ES, Tapirdamaz C, Sanver M (1998) Neogene anticlockwise rotation of central Anatolia (Turkey): preliminary palaeomagnetic and geochronological results. Tectonophysics 299:175–189CrossRef
  Pospelova GA (1973) Paleomagnetic directions and pole positions: data for the USSR-issue 5 catalogue. Soviet Geophysical Committee, World Data Center-B, Moscow
  Reilinger R, McClusky S, Vernant P, Lawrence S, Ergintav S, Çakmak R, Karam G (2006) GPS constraints on continental deformation in the Africa–Arabia–Eurasia continental collision zone and implications for the dynamics of plate interactions. J Geophys Res Solid Earth 111(B5):1978–2012
  Rice SP, Robertson AH, Ustaömer T (2006) Late Cretaceous–Early Cenozoic tectonic evolution of the Eurasian active margin in the Central and Eastern Pontides, northern Turkey. In: Robertson AHF, Mountrakis D (eds) Tectonic Development of the Eastern Mediterranean Region
  Robertson AHF, Parlak O, Rizaoğlu T, Ünlügenç Ü, İnan N, Taşli K, Ustaömer T (2007) Tectonic evolution of the South Tethyan ocean: evidence from the Eastern Taurus Mountains (Elaziğ region, SE Turkey). In: Ries AC, Butler RWH, Graham RH (eds) Deformation of the continental crust: the legacy of mike coward. Geological Society of London, Special Publications, vol 272. Geological Society, London, pp 233–272
  Robertson AHF, Parlak O, Ustaömer T (2012) Overview of the Palaeozoic–Neogene evolution of Neotethys in the Eastern Mediterranean region (southern Turkey, Cyprus, Syria). Pet Geosci 18(4):381–404CrossRef
  Robertson AHF, Parlak O, Ustaömer T (2013) Late Palaeozoic–Early Cenozoic tectonic development of Southern Turkey and the easternmost Mediterranean region: evidence from the inter-relations of continental and oceanic units. In: Robertson AHF, Parlak O, Ünlügenç UC (eds) Geological development of Anatolia and the easternmost Mediterranean region. Geological Society of London, Special Publications, vol 372, issue 1. Geological Society, London, pp 9–48
  Robertson AHF, McCay GA, Tasli K, Yıldız A (2014) Eocene development of the northerly active continental margin of the Southern Neotethys in the Kyrenia Range, north Cyprus. Geol Mag 151(04):692–731CrossRef
  Rotstein Y (1984) Counterclockwise rotation of Anatolian block. Tectonophysics 108:71–91CrossRef
  Sandvol E, Dameg K, Calvert A, Seber D, Barazang M, Mohamad R, Gök R, Türkelli N, Gürbüz C (2001) Tomographic imaging of Lg and Sn propagation in the Middle East. Pure Appl Geophys 158:1121–1163CrossRef
  Sandvol E, Turkelli N, Barazangi M (2003) The Eastern Turkey seismic experiment: the study of a young continent–continent collision. Geophys Res Lett 30(24):8038. doi:10.​1029/​2003GL018912 CrossRef
  Sanver M (1968) Apalaeomagnetic study of Quaternary volcanic rocks from Turkey. Phys Earth Planet Inter 1:403–421CrossRef
  Şaroğlu F, Yılmaz Y (1991a) Geology of Karliova region: intersection of the North Anatolian and East Anatolian transform faults. Bull Tech Univ Istanb 44:475–497
  Şaroğlu F, Yılmaz Y (1991b) Geology of the Karlıova region: intersection of the North Anatolian and East Anatoli an Transform Faults. Bull Tech Univ Istanb 44:3–4
  Şen S, Valet JP (1986) Magnetostratigraphy of late Miocene continental deposits in Samos, Greece. Earth Planet Sci Lett 80(1):167–174
  Şengör AMC (1990) A new model for the late Palaeozoic–Mesozoic tectonic evolution of Iran and implications for Oman. Geol Soc Lond Spec Publ 49(1):797–831CrossRef
  Şengör AMC, Kidd WSF (1979) Post-collisional tectonics of the Turkish–Iranian Plateau and a comparison with Tibet. Tectonophysics 55:361–376. doi:10.​1016/​0040-1951(79)90184-7 CrossRef
  Şengör AMC, Yılmaz Y (1981) Tethyan evolution of Turkey: a plate tectonic approach. Tectonophysics 75:181–241CrossRef
  Şengör AMC, Görürü N, Şaroğlu F (1985) Strike-slip faulting and related basin formation in zones of tectonic escape: Turkey as a case study. In: Biddle KT, Christie-Blick N (eds) Strike-slip deformation, basin formation, and sedimentation. SEPM Special Publications, vol 37. pp 227–264 (in honor of J. C. Crowell)
  Şengör AMC, Özeren S, Genç T, Zor E (2003) East Anatolian high plateau as a mantle-supported, north-south shortened domal structure. Geophys Res Lett 30(24):8045. doi:10.​1029/​2003GL017858 CrossRef
  Şengör AMC, Özeren MS, Keskin M, Sakınç M, Özbakır AD, Kayan G (2008) Eastern Turkish high plateau as a small Turkish-type orogen: implications for post-collisional crust forming processes in Turkish-type orogens. Earth Sci Rev 90:1–48CrossRef
  Tatar O, Piper JDA, Gürsoy H (2000) Palaeomagnetic study of the Erciyes sector of the Ecemiş Fault Zone: neotectonic deformation in the southeastern part of the Anatolian Block. In: Bozkurt E, Winchester JA, Piper JDA (eds) Tectonics and Magmatism in Turkey and the surrounding area. Geological Society of London, Special Publications, vol 173. Geological Society, London, pp 423–440
  Tatar O, Gürsoy H, Piper JDA (2002) Differential neotectonic rotations in Anatolia and the Tauride Arc: paleomagnetic investigation of the Erenlerdağı Complex and Isparta volcanic district, south-central Turkey. J Geol Soc Lond 159:281–294CrossRef
  Tatar O, Piper JDA, Gürsoy H, Heimann A, Koçbulut F (2004) Neotectonic deformation in the transition zone between the Dead Sea Transform and the East Anatolian Fault Zone, Southern Turkey: a palaeomagnetic study of the Karasu Rift volcanism. Tectonophysics 385:17–43CrossRef
  Tatar O, Poyraz F, Gürsoy H, Cakir Z, Ergintav S, Akpınar Z, Koçbulut F, Sezen F, Türk T, Hastaoğlu K, Polat A, Mesci L, Gürsoy Öt Ayazlı E, Çakmak R, Belgen A, Yavaşoğlu H (2012) Crustal deformation and kinematics of the Eastern Part of the North Anatolian Fault Zone (Turkey) from GPS measurements. Tectonophysics 518:55–62CrossRef
  Tokel S (1984) Mechanism of crustal deformation and petrogenesis of the Neogene volcanics in eastern Anatolia (in Turkish). In: Ketin symposium book, Geological Society of Turkey, Ankara, pp 121–131
  Ustaömer T, Robertson AHF (2010) Late Palaeozoic–Early Cenozoic tectonic development of the Eastern Pontides (Artvin area), Turkey: stages of closure of Tethys along the southern margin of Eurasia. In: Sosson M, Kaymakçı N, Stephenson RA, Bergerat F, Starostenko V (eds) Sedimentary Basin Tectonics from the Black Sea and Caucasus to the Arabian Platform. Geological Society of London, Special Publications, vol 340, issue 1. Geological Society, London, pp 281–327
  Ustaömer T, Robertson AHF, Ustaömer PA, Gerdes A, Peytcheva I (2013) Constraints on Variscan and Cimmerian magmatism and metamorphism in the Pontides (Yusufeli -Artvin area), NE Turkey from U-Pb dating and granite geochemistry. In: Robertson AHF, Parlak O, Ünlügenç UC (eds) Geological development of Anatolia and the easternmost Mediterranean region. Geological Society of London, Special Publications, vol 372. Geological Society, London, pp 49–74
  Watson GS (1956) Analysis of dispersion on a sphere. Mon Not R Astron Soc Geophys Suppl 7:153CrossRef
  Westaway R (1994) Present-day kinematics of the Middle East and eastern Mediterranean. J Geophys Res 99:12071–12090CrossRef
  Yılmaz Y (1993) New evidence and model on the evolution of the southeast Anatolian orogen. Geol Soc Am Bull 105(2):251–271CrossRef
  Yılmaz Y, Güner Y, Şaroğlu F (1998) Geology of the Quaternary volcanic centers of the east Anatolia. J Volcanol Geotherm Res 85(1–4):173–210CrossRef
  Yılmaz A, Yilmaz H, Kaya C, Boztug D (2010) The nature of the crustal structure of the Eastern Anatolian Plateau, Turkey. Geodin Acta 23(4):167–183CrossRef
  
• 作者单位：Z. Mümtaz Hisarlı (1)
  Mualla Cengiz Çinku (1)
  Timur Ustaömer (2)
  Mehmet Keskin (2)
  Naci Orbay (1)
  
  1. Department of Geophysical Engineering, Faculty of Engineering, Istanbul University, 34320, Avcılar, Istanbul, Turkey
  2. Department of Geological Engineering, Faculty of Engineering, Istanbul University, 34320, Avcılar, Istanbul, Turkey
  
• 刊物类别：Earth and Environmental Science
• 刊物主题：Earth sciences
  Geology
  Geophysics and Geodesy
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1437-3262

文摘

Palaeomagnetic studies of the Neogene–Quaternary rocks of Anatolia have been mostly interpreted in the light of its westward escape as a result of the collision between the Arabian and Eurasian plates along the Bitlis–Zağros suture during the Neotectonic period. However, within the collision zone, in East Anatolia, palaeomagnetic data are not available. In order to help understand the deformational history of Eastern Anatolia during the Neotectonic period, we have carried out a palaeomagnetic study of Miocene–Quaternary volcanic rocks from 100 sites, selected on the basis of their geographical position and known age. The results indicate that the study area can be divided into five principal tectonic blocks, based on earthquake activity and the rotation that the blocks underwent. These blocks are the Van Block (VB), the Kars Block (KB), the Anatolian Block (AB), the Pontide Block (PB), and the Arabian Block (ARB). The largest counterclockwise (CCW) tectonic rotations were encountered in the AB and PB, whereas the largest clockwise (CW) rotations were recorded in the VB. The sinistral East Anatolian Fault and the Erzurum Fault Zone form the present boundary of these two contrasting, CW and CCW-rotating domains. Both the AB and the PB exhibit similar amount of rotation until the Quaternary, during which the AB rotated 13° CCW while the PB remained stable. The Quaternary rotation of the AB is attributed to the activity of the North Anatolian Fault. The KB shows the smallest amount of CW rotation during all of the time intervals studied. All of the blocks studied indicate an acceleration in the amount of rotations during the Quaternary, which was preceded by a period of relative tectonic stability during the Late Pliocene. Following the collision of the Arabian Plate with the Eurasian Plate during the Mid-Miocene, the crust was initially thickened by thrusting and folding. This was followed by lateral extrusion and differential rotation of the crustal blocks during Late Miocene–Pliocene in response to ongoing indentation of the Arabian Plate. Our data show that strike-slip faults that commonly separate wedge-shape crustal blocks are the most significant means of accommodating the tectonic escape and rotation of crustal blocks in East Anatolia. Delamination of the lower crust and the lithospheric mantle may have contributed to the deformation by thermally weakening the crust.