Palaeomagnetic study of the Galatean Volcanic Province, north-central Turkey: neogene deformation at the northern border of the Anatolian Block

Gürsoy, Hali̇l; Piper, J. D. A.; Tatar, Orhan

doi:10.1002/(sici)1099-1034(199901/06)34:1/2<7::aid-gj812>3.0.co;2-0

Cited by 23 publications

(8 citation statements)

References 20 publications

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“…One of the pioneering studies partly related to the problems that this paper concerns was carried out by Sarıbudak [1989], who aimed at evaluating paleotectonic evolution of the Pontides during the Late Cretaceous-Eocene period. Later studies focused primarily on detecting the deformation that occurred related with the North Anatolian Transform Fault Zone (NAF) [Platzman et al, 1994;Tatar et al, 1995Tatar et al, , 1996Piper et al, , 1997Gürsoy et al, 1999;İşseven and Tüysüz, 2006;Piper et al, 2010]. In the studies more directly related with the Niğde-Kırşahir Massif, Kaymakçı et al [2000Kaymakçı et al [ , 2003 suggested that the omega shape of the Niğde-Kırşehir Massif formed as a result of the indentation of the Kırşehir Block into the Sakarya Continent.…”

Section: Previous Paleomagnetic Studiesmentioning

confidence: 99%

The tectonic history of the Niğde‐Kırşehir Massif and the Taurides since the Late Mesozoic: Paleomagnetic evidence for two‐phase orogenic curvature in Central Anatolia

et al. 2016

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The Niğde-Kırşehir Massif, known also as the Central Anatolian Block, is bordered by the sutures of the Neotethys Ocean. The massif suffered several deformation phases during and after the consumption of the surrounding oceans and the postcollisional events of the continental pieces of Anatolia in latest Cretaceous to Miocene. Previous paleomagnetic studies on the Niğde-Kırşehir Massif and its surroundings displayed either insufficient data or have claimed large rotations and/or remagnetization. In order to understand the tectonic history of the Niğde-Kırşehir Massif and its adjacent blocks we have sampled 147 different sites in the age range of Upper Jurassic to Miocene from the Niğde-Kırşehir Massif throughout its W/SW and E/SE boundaries and the central-southeastern Taurides. The results display that except the limestones in central Taurides, all rocks examined carry a primary magnetization. Among these an important finding is that rotations between the massif and the central-eastern Taurides indicate an oroclinal bending with counterclockwise rotation of R = 41.1°± 7.6°in the SE and clockwise rotation of R = 45.9°± 9.3°in the central Taurides from Upper Cretaceous rocks with respect to the African reference direction. Paleomagnetic rotations in the SE Taurides are compatible with the vergent direction of the thrusts generated from consumption of the Intra-Tauride Ocean prior to postcollisional convergence between Taurides and the massif. In the central Taurides it has been shown that the clockwise rotation of 45.9 ± 9.3 started in Middle Eocene, because of a remagnetization in Upper Cretaceous limestones. The deformation was linked to the final closure of the southern Neotethys and the collision between the African and Eurasian plates. In the Niğde-Kırşehir Massif counterclockwise rotation up to 25.5°± 7.3°is recognized during Middle Eocene and interpreted in terms of block rotation together with the Taurides. After the Miocene a counterclockwise rotation of 16.8°± 3.9°along the Eastern Taurides shows that this area was mostly affected by the westward movement of Anatolia despite the Niğde-Kırşehir Massif and its SW/W area-the central Taurides-which is recognized as stable with counterclockwise rotation less than 10°.

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Section: Previous Paleomagnetic Studiesmentioning

confidence: 99%

The tectonic history of the Niğde‐Kırşehir Massif and the Taurides since the Late Mesozoic: Paleomagnetic evidence for two‐phase orogenic curvature in Central Anatolia

et al. 2016

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“…This fault zone has the characteristics of the right-lateral strike-slip fault that is NW-SE trend, 30 km long and lies between Yerköy and Şefaatli (Koçyiğit, 2003 (Arni, 1938;Parejas ve Pamir, 1939) and the focal mechanism solutions of the earthquake indicated the right-lateral strike-slip faulting and the approximate direction of NNW-SSE compressive stress (Jackson and McKenzie, 1984;Canıtez and Büyükaşıkoğlu, 1984). It was seen that NW-SE directional compressive stress was effective in the focal mechanism solution of Hacıduraklı-Çiçekdağı earthquake on 10 January 2016 and NE-SW directional one was effective in the tensile stress (AFAD-DDB) (Figure 2 (Tatar et al, 1996, 2000, 2002, Gürsoy et al, 1997, 1998, 1999, 2003.…”

Section: Tartişma Ve Yorummentioning

confidence: 99%

10 Ocak 2016 Hacıduraklı-Çiçekdağı (Kırşehir) depremi (Mw = 5.0); ilgili yapılar ve tektonik ortam, Orta Anadolu - Türkiye

Temiz¹,

Gökten²

2016

Türkiye Jeoloji Bülteni / Geological Bulletin of Turkey

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ÖZSismik etkinlik bakımından sakin bir bölge olarak bilinen Orta Anadolu'da 10 Ocak 2016 günü, yerel saat ile 19.40'da merkez üssü Kırşehir ili Çiçekdağı ilçesi Hacıduraklı köyü olan 5.0 (M w ) büyüklüğünde bir deprem meydana gelmiştir. Depremin odak mekanizması çözümü, sağ yanal doğrultu atımlı bir faylanmayı göstermektedir. Bu depremin, odak mekanizması çözümü ile uyumlu olan ve iki yapısal segmentten oluşan ve sağ yanal doğrultu atımlı Manahözü Fayının BKB-DGD uzanımlı segmenti ile ilişkili olarak meydana geldiğini göstermektedir. Manahözü Fayı aktif bir fay olup bölgenin son dönem yapısal olarak şekillenmesinde rol oynayan önemli yapılardan biridir. Kırşehir ve yakın civarındaki önemli jeolojik yapılardan bir diğeri ise, sağ yanal doğrultu atımlı ve KB-GD uzanımlı Seyfe Fay Zonu'dur. Bu aktif yapılar arasındaki etkileşim Seyfe çek-ayır havzasının oluşmasına neden olmuştur. Ayrıca, Manahözü deresinin kuzeyindeki yükselimin Manahözü Fayı ve Yerköy Fay Zonu arasındaki birleşme nedeniyle olabileceğini düşündürmektedir. Aktif bir yapı olan Manahözü Fayının KB-GD uzanımlı segmenti de gelecekte deprem üretme potansiyeline sahip bir yapı olarak durmaktadır.

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“…The first of these studies, that of Sarıbudak [1989], sought to evaluate the paleotectonic evolution of the Pontides in the Eocene and Upper Cretaceous. Later studies focused on detecting the deformation that occurred close to the North Anatolian Fault (NAF) [ Kissel and Laj , 1988; Morris and Robertson , 1993; Gürsoy et al , 1999; Kaymakcı et al , 2007; Çinku and Orbay , 2010; Piper et al , 2010]. Platzman et al [1994] provided paleomagnetic data from Niksar, along a transect across the NAF, that indicate approximately 30° of counterclockwise (CCW) rotation.…”

Section: Previous Paleomagnetic Studies and Tectonic Modelsmentioning

confidence: 99%

Middle Eocene paleomagnetic data from the eastern Sakarya Zone and the central Pontides: Implications for the tectonic evolution of north central Anatolia

et al. 2011

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A paleomagnetic investigation has been carried out on Middle Eocene volcanic rocks at 23 sites in the eastern Sakarya Zone and the central Pontides of north central Anatolia in order to better understand the regional tectonic evolution of the main zones of northeastern Anatolia in the Middle Eocene. The results constrain the tectonic evolution of the area when evaluated in conjunction with earlier published paleomagnetic directions from 92 localities. Small counterclockwise rotations in the range of R ± ΔR = −1.3 ± 1.4° to R ± ΔR = −17.2 ± 16.8°, with respect to Eurasia, are observed in the central Pontides on the northern side of the North Anatolian Fault (NAF). Clockwise rotations ranging between R ± ΔR = 8.5 ± 15.1° and R ± ΔR = 29.7 ± 12.0° are observed between the NAF and the Sungurlu Fault (SF), in the eastern Sakarya zone. Counterclockwise rotations of R ± ΔR = −18.9 ± 12.4° to R ± ΔR = −42.2 ± 6.9° are observed to the south of the SF. Our findings, combined with previous data, support the indentation model of Kaymakcı et al. (2000, 2003a, 2003b), which postulates the collision and northeast directed indentation of the Kırşehir Block into the Sakarya Zone. This model, which was developed to explain the evolution of the Çankırı Basin, can also explain the variable magnitudes of paleomagnetically determined rotations, thrust directions, and the curvature of the North Anatolian ophiolite belt.

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Palaeomagnetic study of the Galatean Volcanic Province, north-central Turkey: neogene deformation at the northern border of the Anatolian Block

Cited by 23 publications

References 20 publications

The tectonic history of the Niğde‐Kırşehir Massif and the Taurides since the Late Mesozoic: Paleomagnetic evidence for two‐phase orogenic curvature in Central Anatolia

The tectonic history of the Niğde‐Kırşehir Massif and the Taurides since the Late Mesozoic: Paleomagnetic evidence for two‐phase orogenic curvature in Central Anatolia

10 Ocak 2016 Hacıduraklı-Çiçekdağı (Kırşehir) depremi (Mw = 5.0); ilgili yapılar ve tektonik ortam, Orta Anadolu - Türkiye

Middle Eocene paleomagnetic data from the eastern Sakarya Zone and the central Pontides: Implications for the tectonic evolution of north central Anatolia

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