Neotectonics of East Anatolian Plateau (Turkey) and Lesser Caucasus: implication for transition from thrusting to strike-slip faulting

Koçyi̇ği̇t, Ali̇; Yılmaz, Ali Osman; Adamia, Shota; Kuloshvili, Simon

doi:10.1016/s0985-3111(00)01064-0

Cited by 121 publications

(135 citation statements)

References 19 publications

Supporting

Mentioning

128

Contrasting

Unclassified

Order By: Relevance

“…The new tectonic regime of Eastern Turkey is well documented in a number of studies (Şengör and Kidd 1979, Şengör and Yılmaz 1983, Dewey et al 1986, Şaroğlu and Yılmaz 1986, Yılmaz et al 1987, Koçyiğit et al 2001. This area is one of the youngest intercontinental collision zones on earth, where the Arabian Plate collides with the Eurasian Plate to form the Turkish-Iranian Plateau, causing movement along the North and East Anatolian Fault zones (Türkelli et al 2003).…”

Section: Seismo-tectonic Structurementioning

confidence: 92%

Evaluation of Liquefaction in Ercis Plain during Van Earthquake

Turan¹,

Naggar

Livaoğlu

2015

IJGE

View full text Add to dashboard Cite

Abstract:The destructive Van Earthquake that struck eastern Turkey on 23 October 2011 caused significant damages and casualties in the Southeastern Turkey City of Van. This study focuses on the liquefaction occurrences in Ercis Plain, where Irsat and Zilan streams are discharged to Lake Van. The liquefaction potential in this area was studied using various analytical methods. Assessment of liquefaction triggering and estimation of seismic induced settlement and lateral spreading were performed. The results of site specific ground response analyses showed that the ground motions were amplified significantly during the earthquake, which resulted in larger values of Cyclic Stress Ratio (CSR) relative to those estimated using simplified methods. A comparison of analytical results with post liquefaction observations indicates that a proper evaluation of CSR values is imperative for a realistic estimation of liquefaction triggering and post liquefaction deformations.

show abstract

Section: Seismo-tectonic Structurementioning

confidence: 92%

Evaluation of Liquefaction in Ercis Plain during Van Earthquake

Turan¹,

Naggar

Livaoğlu

2015

IJGE

View full text Add to dashboard Cite

show abstract

“…The contractional features such as overturned to recumbent folds in the Kızılburun group and the steeply tilted to overturned tectonic contact along the Hasköy-Künüpe detachment fault zone are the reflection of the first group of compressive events. The second and relatively younger (late Early Pliocene-Late Pliocene) group of compressive events is related to the emergence of the Anatolian platelet and its west-southwestward motion along its boundary faults, the dextral North Anatolian and the sinistral East Anatolian fault systems on a regional scale (Çolak, Aksoy, Koçyiğit, & İnceöz, 2012;Koçyiğit, 2013a;Koçyiğit, Yılmaz, Adamia, & Kuloshvili, 2001). The second group of compressive events was recorded as folds, reverse faults and strike-slip faults in and along the contacts of the Langhian-Late Pliocene older graben fill overlain with an angular unconformity by the undeformed neotectonic (modern) graben fill of Early Quaternary age.…”

Section: Back-tilted and Folded Graben Fillsmentioning

confidence: 99%

An overview on the main stratigraphic and structural features of a geothermal area: the case of Nazilli-Buharkent section of the Büyük Menderes Graben, SW Turkey

Koçyi̇ği̇t

2015

Geodinamica Acta

View full text Add to dashboard Cite

The study area is Nazilli-Buharkent section of the Büyük Menderes Graben. This is one of the most active intracontinental extensional structures shaping the south-western Anatolian graben-horst system, which comprises the southwestern frontal part of the Anatolian platelet. The Büyük Menderes Graben is about 3-30 km wide, 170 km long and approximately E-W-trending depression included in the back-arc section of the northerly-dipping south Aegean-Cyprian subduction zone. The Büyük Menderes Graben of episodic origin has two morphotectonic configurations: (1) a wider, uplifted, dissected and deformed initial configuration of late Early-late Middle Miocene age; and (2) the narrower, linear, undeformed and continuous recent configuration of Quaternary age. These two configurations are here termed as the Büyük Menderes palaeotectonic graben and the Büyük Menderes modern (neotectonic) graben, respectively. These two grabens are represented by two sedimentary packages separated by an intervening angular unconformity. The 1.1-km-thick older sedimentary package is deformed (steeply tilted to folded) and consists of, from bottom to top, unsorted boulder-block basal clastics and coal-bearing flood plain to lacustrine deposits of late Early-late Middle Miocene age. The younger sedimentary package is undeformed and consists of very thick (up to 0.9 km) debris flow and fluvial deposits of Quaternary age. The palaeotectonic configuration of the Büyük Menderes Graben is bounded by the Hasköy-Künüpe and İğdecik structural segments of the Büyük Menderes detachment fault. However, the modern configuration of the Büyük Menderes Graben is bounded by the Kuyucak and Menderes high-angle normal fault zones, composed of numerous fault segments, which cut and displace deeply the detachment fault. Hot water springs occur along the traces of the detachment faults. But they are not observed along the traces of modern graben-boundary faults. This reveals that the lowangle detachment fault is being still used by the geothermal fluids. Indeed, it is a fact that the geothermal fluids are shared by both the older detachment and younger high-angle normal faults at their intersection at depth, because the faults are the most suitable ways for the underground circulations of both cold meteoric waters and geothermal fluids, i.e. the geothermal system in south-western Turkey is fault-controlled. Consequently, the geothermal potential of this extensional domain is quite high based on the criteria such as the active tectonic and related faults, sources of high-heat, reservoir rocks with high porosity, reservoir cap rocks with no or low permeability and cold meteoric water supply enough. In order to obtain huge volume of geothermal fluids, first of all, whole steps of the geothermal exploration have to be completed, and then the site of borehole(s) has to be chosen so that it penetrates the intersection of low-angle detachment fault, high-angle normal fault(s) and the reservoir rocks overlain by the thick and impermeable cap rock(s).

show abstract

“…Tertiary units deposited in back-arc basins are most common (Aksoy, Türkmen, & Turan, 2005;Aktaş & Robertson, 1984;Cronin et al, 2000;Özkul & Kerey, 1996;Yazgan, 1984). At the onset of continent-continent collision in the late Miocene, volcanic and continental sedimentary rocks developed and now cover large areas of the Eastern Anatolian region (Akay, Erkan, & Ünay, 1989;Koçyiğit & Beyhan, 1998;Koçyiğit, Yılmaz, Adamia, & Kuloshvili, 2001). From the late Pliocene onwards, strike-slip deformation initiated at the Eastern Anatolia became dominant, and many basins developed along the strike-slip faults (Koçyiğit et al, 2001;Aksoy et al, 2005;Çolak, Aksoy, Koçyiğit, & İnceöz, 2012).…”

Section: Geological Frameworkmentioning

confidence: 99%

Travertine occurrences along major strike-slip fault zones: structural, depositional and geochemical constraints from the Eastern Anatolian Fault System (EAFS), Turkey

et al. 2015

View full text Add to dashboard Cite

The Eastern Anatolian Fault System (EAFS) is a left-lateral strike-slip fault zone, 30 km wide and 700 km long, that is the second most important neotectonic structure of Turkey. In this study, relationship between travertine precipitation and tectonic activity of some segments along this major strike-slip fault zone has been investigated by a multidisciplinary research. Structural, sedimentological, geochemical and geochronological studies were conducted on several travertine occurrences along the Karlıova-Bingöl segment (KBS) and the Adıyaman Fault Zone (AFZ) of the EAFS. The Baltaşı travertine mass on the AFZ was cross-cut by many extensional fractures that were filled by calcite veins. Geochemical analyses of the calcite veins indicate that some are hydrothermal in origin, whereas others are non-hydrothermal. Hydrothermal circulation in the crust was caused intermittently by the left-lateral strike-slip movements that have oblique-to normal-slip components in both the (KBS) and the (BYS) segments. Our results suggest that, from at least 325 ka until present, tectonic activity was consistently accompanied by travertine deposition. Based on dating of the travertine occurrences in the valley of the Göynük Stream around Hacılar and Elmalı, it is concluded that the NE-trending KBS is currently still active.

show abstract

Neotectonics of East Anatolian Plateau (Turkey) and Lesser Caucasus: implication for transition from thrusting to strike-slip faulting

Cited by 121 publications

References 19 publications

Evaluation of Liquefaction in Ercis Plain during Van Earthquake

Evaluation of Liquefaction in Ercis Plain during Van Earthquake

An overview on the main stratigraphic and structural features of a geothermal area: the case of Nazilli-Buharkent section of the Büyük Menderes Graben, SW Turkey

Travertine occurrences along major strike-slip fault zones: structural, depositional and geochemical constraints from the Eastern Anatolian Fault System (EAFS), Turkey

Contact Info

Product

Resources

About