Geologic and Tectonic Setting of the Yozgat Batholith,Northern Central Anatolian Crystalline Complex,Turkey

The Yozgat Batholith lies along the northern edge of the Central Anatolian Crystalline Complex in Central Anatolia, Turkey. The batholith intruded the Paleozoic-Mesozoic metamorphics and Cretaceous ophiolitic mélange, and was nonconformably overlain by latest Maastrichtian-Paleocene and/or Eocene clastics, carbonates, and volcanics. The batholith itself may be subdivided into several mappable subunits bounded by Cretaceous ophiolitic mélange, Eocene cover, and/or faults.

Major- and trace-element as well as REE analyses of the subunits indicate that the granitoids of the Yozgat Batholith are principally metaluminous monzogranites, of subalkaline-calc-alkaline character, except for the peraluminous leucogranitoids of the Yozgat subunit. The granitoids were derived by thickening of the continental crust and related partial melting; the thickening was caused by emplacement of ophiolitic nappes during collisional events.