STRATIGRAPHY OF THE REGİON ERBAA (TOKAT)
Abstract
The Permo-Triassic basement rocks form the basis of the study area, which is located on the North Anatolian Fault and immediate vicinity of the Erbaa District on the north. The primary covering units overlying the basement rocks consist of a thick deposit, deposited in the depression in front of the Eurasian continent during the Liassic-Upper Eocene time interval. The first cover units, unconformably overlying the basic rocks, are overlaid by conglomerate, sandstone, mudstone, marl and oolitic limestones and Lower-Middle Jurassic rocks composed of volcano-clastic rocks, Upper Jurassic-Lower Cretaceous aged neritic and pelagic clayey limestones, the Santonian-Campanian aged sedimentary rocks in the pyroclastic character accompanied by the volcanic-volcanosedimentary rocks formed by the submarine volcanic activity in the Upper Cenomanian, Maestrichtian-Paleocene sandy limestones, Lower-Middle Eocene conglomerate, volcanogenic sandstone, sandy limestone and nummulites limestones and Upper Eocene basalt, pillow lavas, andesite, tuff, tuffite, aglomera, sandstone and siltstone intercalation unconformably. Secondary cover units, composed of loosely adhered conglomerates and sandstones that collapse during terrestrial atmospheric conditions in depressions formed along the North Anatolian Fault zone, are covered by the Quaternary aged alluvium, slope rubble and deposit cones, which constitute the youngest units of the study area.
Keywords
References
- Akyazı, M. ve Tunç, M. (1992). Zile (Tokat) Yöresinin Stratigrafisi. TJK Bülteni, C. 35/2. s.36
- Aktimur, H. T., Ateş, Ş., Yurdakul, M.E., Tekirli, M.E., ve Keçer, M., (1992), Niksar-Erbaa ve Destek Dolayının Jeolojisi. MTA Dergisi 114, 25-36,
- Alp, D. (1972) Amasya yöresinin jeolojisi. İ.Ü. Fen Fakültesi Monografileri, Sayı; 22, 10 s.
- Ambraseys N.N. (1970): Some characteristics features of the Anatolian fault zone. Tectonophysics 9, 143–165.
- Ambraseys N.N. (1971): On the value of historical records of earthquakes. Nature 232, 375–379.
- Arpat, E. Şaroğlu, F. 1975. Türkiye’deki bazı önemli genç tektonik olaylar. Türkiye Jeoloji Kurumu Bülteni, 18/1, 91-101.
- Barka, A.A., Cohen, H., Aky.Z, S. & Watchorn, F. (2000). Tectonic evolution of the Niksar and Tasova-Erbaa pull-apart basins, North Anatolian fault zone: their significance for the motion of the Anatolian block. Tectonophysics 322, 243-264.
- BlumenthaL, M.M. 1950. Beitr.ge zur Geologie des landschaften am Mittleren und unteren Yeşil Irmak (Tokat, Amasya, Havza, Erbaa,Niksar). Mineral Research and Exploration Institute of Turkey (MTA) Special Publication D 4, 153 p.
- Kavak, Sezen, F. Koçbulut, O. Tatar, H. Gürsoy, B.L. Mesci,K.S.Kavak, Z. Akpınar, A. Polat, G. Kanaat veH.T. Demirel, 2006, Esençay Fayı’nın Erbaa güney batısı ve Niksar güneyindeki bölümünün jeomorfolojik özellikleri, 2006, ATAG 10. Toplantısı Bildiri Özleri Kitapçığı , s.74.
- Özcan, A., Erkan, A., Keskin, A,, Keskin, E., Oral, A., Özer, S.,Sümengen, M. ve Tekeli, O. (1980) Kuzey Anadolu Fayı ile Kırşehir Masifi arasının temel jeolojisi: MTA Enst. Rapor No: 6722, 139 s. (yayımlanmamış).