GEOLOGICAL JOURNAL, cilt.34, ss.55-74, 1999 (SCI-Expanded)
The Western Pontides of northern Turkey are a tectonic mosaic formed as a result of progressive welding of continental and oceanic fragments during the Palaeozoic and Mesozoic. In this region, three approximately east-west trending zones can be distinguished: the Pontide Zone representing the Pontides sensu stricto; the Sakarya Zone which is regarded as the southerly continental fragment; and the Armutlu-Ovacik Zone which is viewed as a tectonic mixture of the two zones.