New punctual estimates on the Quaternary slip rate of the active transform margin of North Anatolia are provided.It is investigated the area struck by the 12 November 1999, Mw 7.1 earthquake, that ruptured the Düzce fault segment of the North Anatolian Fault. In order to analyze the spectacular tectonically driven cumulative landforms and the drainage pattern settings, is carried out a 1:25,000-scale geological and geomorphological mapping along the fault trace.