Geodiversitas, cilt.27, sa.4, ss.519-525, 2005 (SCI-Expanded)
This paper presents tectonic features of the southern part of Çankιrι basin where is located the rich late Miocene mammal locality of Akkaşdaǧι. Field observations and mapping demonstrated that the late Miocene-Pliocene deposits unconformaly overlie the pre-Neogene basement. The overall thickness of Neogene deposits increases toward NE. Horst-graben structure of pre-Neogene basement indicates that the Miocene fill took place under extensional tectonics which enlarged the basin toward SW. © Publications Scientifiques du Muséum national d'Histoire naturelle, Paris.