The Intra-Pontide suture zone in the Tosya-Kastamonu area, Northern Turkey

We present the first detailed geological map of the tectonic units documented in theeasternmost branch of the Intra-Pontide suture (IPS) zone in the Tosya-Kastamonu area(Northern Turkey). The Main Map is at 1:50,000 scale and covers an area of about 350 km2. Itderived from 1:25,000 scale classic field mapping and represents a detailed overview of thecomplexities documented in the IPS zone, a tectonic nappe stack originating from theclosure of the Intra-Pontide Oceanic basin and the subsequent collision between theIstanbul-Zonguldak terrane and the Sakarya composite terrane. The map shows theorientations of superposed foliations, fold axes and mineral lineations on the basis ofgeometric cross-cutting relationships documented within the five tectonic units of the IPSzone and provides information on its present-day architecture resulting from activity of theNorth Anatolian Fault.