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Palaeomagnetic evolution of the Çankırı Basin (central Anatolia, Turkey): implications for oroclinal bending due to indentation

Published online by Cambridge University Press:  09 June 2003

NURETDIN KAYMAKCI ,
CHARON E. DUERMEIJER ,
COR LANGEREIS ,
STANLEY H. WHITE  and
PAUL M. VAN DIJK
NURETDIN KAYMAKCI
Affiliation:
Middle East Technical University, Faculty of Engineering, Dept. of Geological Engineering, 06531-Ankara, Turkey
CHARON E. DUERMEIJER
Affiliation:
Faculty of Earth Sciences, Utrecht University, Budapestlaan 17, 3584 CD Utrecht, The Netherlands
COR LANGEREIS
Affiliation:
Faculty of Earth Sciences, Utrecht University, Budapestlaan 17, 3584 CD Utrecht, The Netherlands
STANLEY H. WHITE
Affiliation:
Faculty of Earth Sciences, Utrecht University, Budapestlaan 17, 3584 CD Utrecht, The Netherlands
PAUL M. VAN DIJK
Affiliation:
ITC, Hengelosestr 99, P.O. Box 6, 7500 AA Enschede, The Netherlands
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Abstract

Palaeomagnetic data in combination with palaeostress data and anisotropy of magnetic susceptibility orientations are utilized to develop a tectonic evolutionary model for the Early Tertiary part of the Ω (omega)-shaped Çankırı Basin (Turkey). The results reveal clockwise rotations in the northeast and anticlockwise rotations in the west and southeastern corner of the basin. The magnetic inclinations indicate a northward drift of the Çankırı Basin and support an indentation model for the Kırşehir Block. It is proposed that the Ω-shape of the Çankırı Basin was the result of indentation of the Kırşehir Block into the Sakarya Continent during northwards migration accompanying closure of Neotethys. It appears that the indentation started prior to Eocene and ended before Middle Miocene times.

Keywords

tectonicspalaeomagnetismmagnetic declinationstressTurkeyoroclines
Type
Original Article
Information
Geological Magazine , Volume 140 , Issue 3 , May 2003 , pp. 343 - 355
Copyright
© 2003 Cambridge University Press

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