Coeval Shoshonitic-ultrapotassic dyke emplacements within the Kestanbol Pluton, Ezine – Biga Peninsula (NW Anatolia)

The Biga Peninsula, in the north-western part of Western Anatolia, is part of the Sakarya Zone of the Western Pontides and the tectonically overlying Ezine group. The basement rocks are intruded by the early Miocene Kestanbol Pluton and early to middle Miocene calc-alkaline to shoshonitic-ultrapotassic volcanic successions related to postcollisional continental extension.