To understand the rupture behaviour in this structurally complex section of the North Anatolian Fault, we undertook palaeoseismological trench investigations on the Kelkit Valley segment where there is little or no palaeoseismic information. | Palaeoearthquakes on the kelkit valley segment of the North Anatolian fault, Turkey: Implications for the surface rupture of the historical 17 august 1668 Anatolian earthquake