A Late Pliocene - Quaternary Pinched Crustal Wedge in NW Central Anatolia, Turkey: A Neotectonic Structure Accommodating the Internal Deformation of the Anatolian Plate / KB Orta Anadolu’da Geç Pliyosen – Kuvaterner Kıstırılmış Kabuksal Tektonik Kama: Anadolu Levhasının iç Deformasyonunu Üstlenen Bir Neotektonik Yapı

Authors : Gürol Seyitoğlu, Bahadır Aktuğ, Levent Karadenizli, Bülent Kaypak, Şevket Şen, Nizamettin Kazanci, Veysel Işik, Korhan Esat, Oktay Parlak, Baki Varol, Gerçek Saraç, Ilker Ileri

Pages : 121-154

View : 23 | Download : 10

Publication Date : 2009-04-01

Article Type : Research

Abstract :The Neo-Tethyan suture zone in the western margin of the Çankırı basin (NW central Anatolia, Turkey)  has been reactivated as a pinched crustal wedge due to a NW – SE compression created by the right lateral North Anatolian Fault Zone and the Kırıkkale – Erbaa Fault Zone. This neotectonic structure, the  Eldivan-Elmadağ pinched crustal wedge-(EPCW), having a thrusted eastern and normal faulted western  margin, has accommodated a 2.8 km shortening since the Late Pliocene. This result accords with the  model in which the Anatolian plate is squeezed from the east rather than pulled from the southwest. The  EPCW, a recently active structure, should be regarded as a potential source in the earthquake risk  assessment of central Anatolia, particularly for the capital city Ankara and for Çankırı.
Keywords : Neotectonics, Central Anatolia, Seismicity