Apatite Fission Track Dating of the Beypazari Granitoid: Insight for the Inception of Collision Along the Northern Neotethys, Turkey

Abstract

The Beypazari Granitoid is an arc-related intrusion in the Central Pontides, Turkey. This study presents apatite fission track (AFT) ages of the intrusion to shed some light on collision-related cooling/exhumation history of the central Pontides. The AFT ages from different altitudes (506-805-1110 metres above sea level) of the Beypazari Granitoid yield around 65 +/- 3 Ma. This indicates a rapid cooling/exhumation for the intrusion around 65 Ma, which is attributed to the commencement of the collision event in the region. Integration of these ages and low-temperature thermochronology literature suggests a progressive collision propagation towards the margins of the collision system.