Long-term evolution of the North Anatolian Fault: new constraints from its eastern termination

Hubert-Ferrari A., King G., van der Woerd J., Villa I., ALTUNEL E., Armijo R.

COLLISION AND COLLAPSE AT THE AFRICA-ARABIA-EURASIA SUBDUCTION ZONE, vol.311, pp.133-154, 2009 (SCI-Expanded) identifier identifier


The deformation and Ar-40-Ar-39 dating of recent volcanism, that remarkably sits across the North Anatolian Fault eastern termination in Turkey, together with previous studies, put strong constraints on the long-term evolution of the fault. We argue that after a first phase of 10 Ma, characterized by a slip rate of about 3 mm/a, and during which most of the trace was established, the slip rate jumped to about 20 mm/a on average over the last 2.5 Ma, without substantial increase of the fault length. The transition correlates with a change in the geometry at the junction with the East Anatolian Fault that makes the extrusion process more efficient.