Zircon U Pb geochronology and petrology of the tholeiitic gabbro from the Kovanlık (Giresun) area: Constraints for the Late Cretaceous bimodal arc magmatism in the Eastern Pontides Orogenic Belt, NE Turkey

İ̇rfan Temizel, Mehmet Arslan, Emel Abdioğlu Yazar, Zafer Aslan, Abdullah Kaygusuz, Tuğba Baki Eraydın