Structure of the North Anatolian Fault Zone Imaged Via Teleseismic Scattering Tomography
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Longitudinal and Temporal Evolution of the Tectonic Style Along The
Longitudinal and Temporal Evolution of the Tectonic Style Along the Cyprus Arc System, Assessed Through 2-D Reflection Seismic Interpretation Vasilis Symeou, Catherine Homberg, Fadi H. Nader, Romain Darnault, Jean-claude Lecomte, Nikolaos Papadimitriou To cite this version: Vasilis Symeou, Catherine Homberg, Fadi H. Nader, Romain Darnault, Jean-claude Lecomte, et al.. Longitudinal and Temporal Evolution of the Tectonic Style Along the Cyprus Arc System, Assessed Through 2-D Reflection Seismic Interpretation. Tectonics, American Geophysical Union (AGU), 2018, 37 (1), pp.30 - 47. 10.1002/2017TC004667. hal-01827497 HAL Id: hal-01827497 https://hal.sorbonne-universite.fr/hal-01827497 Submitted on 2 Jul 2018 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Longitudinal and Temporal Evolution of the Tectonic Style Along the Cyprus Arc System, Assessed Through 2-D Reflection Seismic Interpretation Vasilis Symeou1,2 , Catherine Homberg1, Fadi H. Nader2, Romain Darnault2, Jean-Claude Lecomte2, and Nikolaos Papadimitriou1,2 1ISTEP, Universite Pierre et Marie Curie, Paris, France, 2Geosciences Division, IFP Energies nouvelles, Rueil-Malmaison, Key Points: • Lateral changes from a compressional France to a strike-slip regime along the Cyprus Arc • Different crustal nature in the eastern Abstract The Cyprus Arc system constitutes a major active plate boundary in the eastern Mediterranean Mediterranean region. -
Read and Understand These Archi- Ves
IAS Newsletter 203 April 2006 SUPER SEDIMENTOLOGICAL EXPOSURES The extensional Corinth-Patras basin evolution from Pliocene to present and the different coarse-grained fan-delta types along Corinth sub-basin Introduction to 30 km and 20 km wide, respectively) due to a NE-trending rifted sub-basin (Rion sub-basin, 15 The Corinth–Patras basin is a late km long and up to 3 km wide; Fig. Pliocene to Quaternary WNW 1B). Both sub-basins (Corinth and trending extensional basin that Patras) show high rates of subsidence extends for 130km across the Greek along the southern, more active mainland. It formed by late Cenozoic margins. Changes in predominant back-arc extension behind the stress directions at this time led to Hellenic trench (Fig. 1A; Zelilidis, the Rion sub-basin acting as a transfer 2000). During the Pliocene, zone between the extending Patras extension formed the Corinth– and Corinth sub-basins. Due to the Patras basin, and the resulting WNW- above-mentioned different fault directed basin was relatively uniform trends in the area of the Rion sub- in width and depth along its axis (Fig. basin, the Corinth–Patras basin 1B). locally became very narrow and The Corinth–Patras basin was shallow, forming the Rion Strait separated into two WNW-trending which influences sedimentological sub-basins (Corinth and Patras sub- evolution of the whole basin (Figs 2 basins, 90 km and 30 km long and up and 3). 3 IAS Newsletter 203 April 2006 Figure 1. (A) Sketch map of Greece: black area indicates the studied area (shown in B and C). -
Crustal Structure of the Eastern Anatolia Region (Turkey) Based on Seismic Tomography
geosciences Article Crustal Structure of the Eastern Anatolia Region (Turkey) Based on Seismic Tomography Irina Medved 1,2,* , Gulten Polat 3 and Ivan Koulakov 1 1 Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, Prospekt Koptyuga, 3, 630090 Novosibirsk, Russia; [email protected] 2 Sobolev Institute of Geology and Mineralogy SB RAS, Prospekt Koptyuga, 3, 630090 Novosibirsk, Russia 3 Department of Civil Engineering, Yeditepe University, 26 Agustos Yerleskesi, 34755 Istanbul, Turkey; [email protected] * Correspondence: [email protected]; Tel.: +7-952-922-49-67 Abstract: Here, we investigated the crustal structure beneath eastern Anatolia, an area of high seismicity and critical significance for earthquake hazards in Turkey. The study was based on the local tomography method using data from earthquakes that occurred in the study area provided by the Turkiye Cumhuriyeti Ministry of Interior Disaster and Emergency Management Directorate Earthquake Department Directorate of Turkey. The dataset used for tomography included the travel times of 54,713 P-waves and 38,863 S-waves from 6355 seismic events. The distributions of the resulting seismic velocities (Vp, Vs) down to a depth of 60 km demonstrate significant anomalies associated with the major geologic and tectonic features of the region. The Arabian plate was revealed as a high-velocity anomaly, and the low-velocity patterns north of the Bitlis suture are mostly associated with eastern Anatolia. The upper crust of eastern Anatolia was associated with a ~10 km thick high-velocity anomaly; the lower crust is revealed as a wedge-shaped low-velocity anomaly. This kind of seismic structure under eastern Anatolia corresponded to the hypothesized existence of Citation: Medved, I.; Polat, G.; a lithospheric window beneath this collision zone, through which hot material of the asthenosphere Koulakov, I. -
Engineering Geology of Dam Foundations in North - Western Greece
Durham E-Theses Engineering geology of dam foundations in north - Western Greece Papageorgiou, Sotiris A. How to cite: Papageorgiou, Sotiris A. (1983) Engineering geology of dam foundations in north - Western Greece, Durham theses, Durham University. Available at Durham E-Theses Online: http://etheses.dur.ac.uk/9361/ Use policy The full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that: • a full bibliographic reference is made to the original source • a link is made to the metadata record in Durham E-Theses • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders. Please consult the full Durham E-Theses policy for further details. Academic Support Oce, Durham University, University Oce, Old Elvet, Durham DH1 3HP e-mail: [email protected] Tel: +44 0191 334 6107 http://etheses.dur.ac.uk ENGINEERING GEOLOGY OF DAM FOUNDATIONS IN NORTH - WESTERN GREECE by Sotiris A. Papageorgiou B.Sc.Athens, M.Sc.Durham (Graduate Society) The copyright of this thesis rests with the author. No quotation from it should be published without his prior written consent and information derived from it should be acknowledged. A thesis submitted to the University of Durham for the Degree of Doctor of Philosophy 1983 MAIN VOLUME i WALLS AS MUCH AS YOU CAN Without consideration, without pity, without shame And if you cannot make your life as you want it, they have built big and high walls around me. -
Thickness of the Lithosphere Beneath Turkey and Surroundings from S-Receiver Functions
Solid Earth, 6, 971–984, 2015 www.solid-earth.net/6/971/2015/ doi:10.5194/se-6-971-2015 © Author(s) 2015. CC Attribution 3.0 License. Thickness of the lithosphere beneath Turkey and surroundings from S-receiver functions R. Kind1,2, T. Eken3, F. Tilmann1,2, F. Sodoudi1, T. Taymaz3, F. Bulut4, X. Yuan1, B. Can5, and F. Schneider1 1Deutsches GeoForschungsZentrum GFZ, Potsdam, Germany 2Freie Universität, Fachrichtung Geophysik, Berlin, Germany 3Department of Geophysical Engineering, The Faculty of Mines, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey 4Istanbul Aydın University, AFAM D. A. E. Research Centre, Istanbul, Turkey 5Bogaziçi University, Kandilli Observatory and Earthquake Research Institute (KOERI), Istanbul, Turkey Correspondence to: R. Kind ([email protected]) Received: 9 March 2015 – Published in Solid Earth Discuss.: 10 April 2015 Revised: 8 July 2015 – Accepted: 15 July 2015 – Published: 31 July 2015 Abstract. We analyze S-receiver functions to investigate lies on studies that examined the data from several temporary variations of lithospheric thickness below the entire region and permanent seismic networks (e.g., Angus et al., 2006; of Turkey and surrounding areas. The teleseismic data used Sodoudi et al., 2006, 2015; Gök et al., 2007, 2015; Vanacore here have been compiled combining all permanent seismic et al., 2013; Vinnik et al., 2014). Interpretations from these stations which are open to public access. We obtained almost studies are either confined to a limited region or to a limited 12 000 S-receiver function traces characterizing the seismic depth extent, i.e., to crustal depths only. Thus, the variations discontinuities between the Moho and the discontinuity at of lithospheric thickness have not yet been homogeneously 410 km depth. -
3D Seismic Velocity Structure Around Plate Boundaries and Active Fault Zones 47
ProvisionalChapter chapter 3 3D Seismic Velocity Structure AroundAround PlatePlate BoundariesBoundaries and Active Fault Zones and Active Fault Zones Mohamed K. Salah Mohamed K. Salah Additional information is available at the end of the chapter Additional information is available at the end of the chapter http://dx.doi.org/10.5772/65512 Abstract Active continental margins, including most of those bordering continents facing the Pacific Ocean, have many earthquakes. These continental margins mark major plate boundaries and are usually flanked by high mountains and deep trenches, departing from the main elevations of continents and ocean basins, and they also contain active volcanoes and, sometimes, active fault zones. Thus, most earthquakes occur predomi‐ nantly at deep‐sea trenches, mid‐ocean spreading ridges, and active mountain belts on continents. These earthquakes generate seismic waves; strong vibrations that propagate away from the earthquake focus at different speeds, due to the release of stored stress. Along their travel path from earthquake hypocenters to the recording stations, the seismic waves can image the internal Earth structure through the application of seismic tomography techniques. In the last few decades, there have been many advances in the theory and application of the seismic tomography methods to image the 3D structure of the Earth's internal layers, especially along major plate boundaries. Applications of these new techniques to arrival time data enabled the detailed imaging of active fault zones, location of magma chambers beneath active volcanoes, and the forecasting of future major earthquakes in seismotectonically active regions all over the world. Keywords: 3D seismic structure, seismic tomography, Vp/Vs ratio, plate boundaries, crustal structure 1. -
A New Classification of the Turkish Terranes and Sutures and Its Implication for the Paleotectonic History of the Region
Available online at www.sciencedirect.com Tectonophysics 451 (2008) 7–39 www.elsevier.com/locate/tecto A new classification of the Turkish terranes and sutures and its implication for the paleotectonic history of the region ⁎ Patrice Moix a, , Laurent Beccaletto b, Heinz W. Kozur c, Cyril Hochard a, François Rosselet d, Gérard M. Stampfli a a Institut de Géologie et de Paléontologie, Université de Lausanne, CH-1015 Lausanne, Switzerland b BRGM, Service GEOlogie / Géologie des Bassins Sédimentaires, 3 Av. Cl. Guillemin - BP 36009, FR-45060 Orléans Cedex 2, France c Rézsü u. 83, H-1029 Budapest, Hungary d IHS Energy, 24, chemin de la Mairie, CH-1258 Perly, Switzerland Received 15 October 2007; accepted 6 November 2007 Available online 14 December 2007 Abstract The Turkish part of the Tethyan realm is represented by a series of terranes juxtaposed through Alpine convergent movements and separated by complex suture zones. Different terranes can be defined and characterized by their dominant geological background. The Pontides domain represents a segment of the former active margin of Eurasia, where back-arc basins opened in the Triassic and separated the Sakarya terrane from neighbouring regions. Sakarya was re-accreted to Laurasia through the Balkanic mid-Cretaceous orogenic event that also affected the Rhodope and Strandja zones. The whole region from the Balkans to the Caucasus was then affected by a reversal of subduction and creation of a Late Cretaceous arc before collision with the Anatolian domain in the Eocene. If the Anatolian terrane underwent an evolution similar to Sakarya during the Late Paleozoic and Early Triassic times, both terranes had a diverging history during and after the Eo-Cimmerian collision. -
54. Mesozoic–Tertiary Tectonic Evolution of the Easternmost Mediterranean Area: Integration of Marine and Land Evidence1
Robertson, A.H.F., Emeis, K.-C., Richter, C., and Camerlenghi, A. (Eds.), 1998 Proceedings of the Ocean Drilling Program, Scientific Results, Vol. 160 54. MESOZOIC–TERTIARY TECTONIC EVOLUTION OF THE EASTERNMOST MEDITERRANEAN AREA: INTEGRATION OF MARINE AND LAND EVIDENCE1 Alastair H.F. Robertson2 ABSTRACT This paper presents a synthesis of Holocene to Late Paleozoic marine and land evidence from the easternmost Mediterra- nean area, in the light of recent ODP Leg 160 drilling results from the Eratosthenes Seamount. The synthesis is founded on three key conclusions derived from marine- and land-based study over the last decade. First, the North African and Levant coastal and offshore areas represent a Mesozoic rifted continental margin of Triassic age, with the Levantine Basin being under- lain by oceanic crust. Second, Mesozoic ophiolites and related continental margin units in southern Turkey and Cyprus repre- sent tectonically emplaced remnants of a southerly Neotethyan oceanic basin and are not far-travelled units derived from a single Neotethys far to the north. Third, the present boundary of the African and Eurasian plates runs approximately east-west across the easternmost Mediterranean and is located between Cyprus and the Eratosthenes Seamount. The marine and land geology of the easternmost Mediterranean is discussed utilizing four north-south segments, followed by presentation of a plate tectonic reconstruction for the Late Permian to Holocene time. INTRODUCTION ocean (Figs. 2, 3; Le Pichon, 1982). The easternmost Mediterranean is defined as that part of the Eastern Mediterranean Sea located east ° The objective here is to integrate marine- and land-based geolog- of the Aegean (east of 28 E longitude). -
Tectonics and Magmatism in Turkey and the Surrounding Area Geological Society Special Publications Series Editors
Tectonics and Magmatism in Turkey and the Surrounding Area Geological Society Special Publications Series Editors A. J. HARTLEY R. E. HOLDSWORTH A. C. MORTON M. S. STOKER Special Publication reviewing procedures The Society makes every effort to ensure that the scientific and production quality of its books matches that of its journals. Since 1997, all book proposals have been refereed by specialist reviewers as well as by the Society's Publications Committee. If the referees identify weaknesses in the proposal, these must be addressed before the proposal is accepted. Once the book is accepted, the Society has a team of series editors (listed above) who ensure that the volume editors follow strict guidelines on refereeing and quality control. We insist that individual papers can only be accepted after satisfactory review by two independent referees. The questions on the review forms are similar to those for Journal of the Geological Society. The referees' forms and comments must be available to the Society's series editors on request. Although many of the books result from meetings, the editors are expected to commission papers that were not presented at the meeting to ensure that the book provides a balanced coverage of the subject. Being accepted for presentation at the meeting does not guarantee inclusion in the book. Geological Society Special Publications are included in the ISI Science Citation Index, but they do not have an impact factor, the latter being applicable only to journals. More information about submitting a proposal and producing a Special Publication can be found on the Society's web site: www.geolsoc.org.uk. -
Slab Segmentation and Late Cenozoic Disruption of the Hellenic Arc Leigh H
Slab segmentation and late Cenozoic disruption of the Hellenic arc Leigh H. Royden, Dimitrios J. Papanikolaou To cite this version: Leigh H. Royden, Dimitrios J. Papanikolaou. Slab segmentation and late Cenozoic disruption of the Hellenic arc. Geochemistry, Geophysics, Geosystems, AGU and the Geochemical Society, 2011, 12 (3), 10.1029/2010GC003280. hal-01438679 HAL Id: hal-01438679 https://hal.archives-ouvertes.fr/hal-01438679 Submitted on 17 Jan 2017 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Article Volume 12, Number 3 29 March 2011 Q03010, doi:10.1029/2010GC003280 ISSN: 1525‐2027 Slab segmentation and late Cenozoic disruption of the Hellenic arc Leigh H. Royden Department of Earth, Atmospheric and Planetary Sciences, MIT, 54‐826 Green Building, Cambridge, Massachusetts, 02139 USA ([email protected]) Dimitrios J. Papanikolaou Department of Geology, University of Athens, Panepistimioupoli Zografou, 15784 Athens, Greece ([email protected]) [1] The Hellenic subduction zone displays well‐defined temporal and spatial variations in subduction rate and offers an excellent natural laboratory for studying the interaction among slab buoyancy, subduction rate, and tectonic deformation. In space, the active Hellenic subduction front is dextrally offset by 100– 120 km across the Kephalonia Transform Zone, coinciding with the junction of a slowly subducting Adria- tic continental lithosphere in the north (5–10 mm/yr) and a rapidly subducting Ionian oceanic lithosphere in the south (∼35 mm/yr). -
A Remote Sensing Perspective
Δελτίο Ελληνικής Γεωλογικής Εταιρίας τομ. XLIV, 2011 54 Bulletin of the Geological Society of Greece vol. XLIV, 2011 Geomorphological and Environmental changes in West- ern Greece: a remote sensing perspective (1) (1) EMMANUEL VASSILAKIS & EFTHIMIA VERYKIOU - PAPASPYRIDAKOU ABSTRACT Several rapid geomorphological changes can be detected on the landscape of western Greece since the area is adjacent to the highly active Hellenic trench, where major geodynamic phenomena occur. At this part of the Hellenides, various active structures have been affecting the shallow layers of the overriding plate, due to tectonic movements and in some cases gypsum diapirism. Additionally, lots of environmental implications have been reported since a significant amount of development infrastructure is still being constructed in this area for more than the last twenty years, affecting the slower physical ongoing processes. The outcropping erodible lithologies of flysch in conjunction with the existence of high energy rivers reveal a rapidly evolving area with dynamic topography, which can be identified by using the appropriate methodologies. Remote sensing techniques prove to be the ideal way to locate changes at the physical geography of the studied area, especially when multi- temporal interpretation is implemented. In this paper we try to locate and analyze these changes by using medium resolution satellite images (Landsat TM and ETM+) of different temporal periods (1992, 2000 and 2005). After special interpretation of the acquired remote sensing images, which involves detailed co-registration and spectral analysis, the identified changes can be temporally cate- gorized between the three acquisition dates. The methodology requires the compilation of new sepa- rate datasets, one for each spectral channel from the three Landsat images, in order to detect chang- es in the absorption and reflection spectra for specific bandwidths. -
GSA TODAY Cordilleran, P
Vol. 10, No. 1 January 2000 INSIDE • 2000 Section Meetings North-Central, p. 12 Rocky Mountain, p. 16 GSA TODAY Cordilleran, p. 29 • 1999 Annual Meeting, p. 21 A Publication of the Geological Society of America • New Members, Fellows, Associates, p. 37 1999 Izmit, Turkey Earthquake Was No Surprise Robert Reilinger, Nafi Toksoz, Simon McClusky, Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, [email protected] Aykut Barka, Istanbul Technical University, Eurasian Earth Science Institute, Ayazaga, Istanbul, Turkey ABSTRACT The magnitude (M) 7.4 Izmit earthquake was the largest and most deadly earthquake in Turkey in the past 60 years, and the most destructive in terms of property damage in Turkey’s recorded history. It struck on a seg- ment of the North Anatolian fault ~100 km east of Istanbul, one of the most heavily pop- ulated and industrially developed regions of the country. The earthquake caused a 120 km surface rupture (with an unmapped extension beneath Izmit Bay) with right-lat- eral offsets of 1.5–5 m. Apart from the loss of life and property, the Izmit earthquake is remarkable in being the latest in a series of 11 major (M >6.7) earthquakes this century that have broken more than a 1000 km length Figure 1. Simplified tectonic map of eastern Mediterranean superimposed on topography and bathymetry. Solid lines—strike-slip faults; lines with tick marks—normal faults, ticks on down- of the North Anatolian fault from near the thrown block; lines with triangles—thrust faults, triangles on overriding block.