MEHMET FURKAN ŞENER, MEHMET ŞENER, MUHAMMED ZEYNEL ÖZTÜRK

SEYFE FAY ZONUNA AİT KİL MİNERALLERİNİN YAŞI, PETROGRAFİSİ VE KİNEMATİĞİ: ORTA ANADOLU, TÜRKİYE

Çalışma alanı Orta Anadolu Kristalen Karmaşığı (OAKK) içerisinde Seyfe Fay Zonu (SFZ) ve uzantısı olan Boğazlıyan Fayı üzerinde yer almaktadır. SFZ, Orta Anadolu’daki en önemli bölgesel ölçekli fay sistemlerinden birini temsil etmekte ve Neo-Tetis'in kapanması sırasında ortaya çıkan çarpışma olaylarının kayıtlarını bulundurmaktadır. SFZ, BKB-DGD doğrultulu sağ yanal doğrultu atımlı faylardan oluşmaktadır. Tüm kaya ve kil XRD ile eser element verileri illitlerin derin tektonik aktivite esnasında yüzeye ulaşan hidrotermal sulardan çökeldiğini göstermektedir. Bu akışkanlar, sığ kırılgan deformasyon bölgeleri boyunca yüzeye doğru göç etmiştir. Farklı kataklastik zonlardaki (1266, 1276 ve 1488 m) illitlerden yapılan Rb-Sr jeokronolojisi aktivitenin yaşını 21,4 ± 0,57 My olarak göstermiştir. Buna göre SFZ, Erken Miyosen’e kadar uzanır ve bu da hem göreceli yaşlarla hem de OAKK içerisindeki yapılan önceki çalışmalarda önerilen yaş verileri ile tutarlıdır. Muhtemel bir bindirme zonuna ait olan 1266 m ve 1276 m örnekleri Burdigaliyen dönemi olarak kabul edilen Paleotetisin kapanmasının ve Neotetisin başlangıcının OAKK içerisinde yaklaşık 21 my önce gerçekleştiğini ortaya koymaktadır.

Anahtar Kelimeler:

Seyfe Fay Zonu, Boğazlıyan Fayı, Jeokronoloji, Rb-Sr, Orta Anadolu

AGE, PETROGRAPHY AND KINEMATICS OF CLAY MİNERALS OF SEYFE FAULT ZONE: CENTRAL ANATOLIA, TURKEY

The study area is located on the Seyfe Fault Zone (SFZ) and Boğazlıyan Fault which is thought to be extension of Seyfe Fault Zone in Central Anatolian Crystalline Complex (CACC). The SFZ represents one of the most important regional-scale fault systems in Central Anatolia and has records the collision events that occurred during the closure of Neo-Tethys. The SFZ consists of WNW-ESE oriented dextral strike-slip faults. Whole rock and clay XRD and trace element data show that clay minerals collapse from hydrothermal water reaching the surface during deep tectonic activity. These fluids are migrated upward along shallow fragile deformation zones. The age of Rb-Sr geochronology of three different cataclastic zones as 1266, 1276 and 1488 m, showed the age of activity as 21.4 ± 0.57 Ma. According to this, the SFZ extends to the early Miocene and is consistent with both the relative age and the age data suggested in previous studies conducted within the CACC. Samples of 1266 m and 1276 m belonging to a possible thrust zone reveal that the closure of Palaeotethys and the beginning of Neotethys, which is accepted as Burdigalian period, occurred around 21 Ma ago in the Central Anatolian Crystalline Complex.

Keywords:

Seyfe Fault Zone, Boğazlıyan Fault, Geochronology, Rb-Sr, Central Anatolia,

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