Basin in Central Anatolia has been studied in order to trace its deformation
history since the Late Cretaceous. The Basin is a key area in central Turkey
with an almost complete infill of Late Cretaceous to Recent, and a multiphase
deformation history resulting in an `omega` shaped outline of the Izmir-
Ankara- Erzincan Suture Zone around the Kirsehir block.
The Cankiri basin
is located between the Pontides and Taurides. The different compartments
of the basin rotated during the indentation of the Kirsehir block.
inspecting a nice section to sample, together with Paul van Dijk and Dilara
The Cankiri basin comprises
very thick post-Middle Eocene continental deposits, the ages of whch were
not exactly known at the time. The ages given in the literature were based
either on superposition or long distance correlations. With the help of
Hans de Bruijn and his co- workers, most of the post-Middle Oligocene units
were dated precisely by mammal stratigraphy.
||One of the best sites
In the background:
Middle Eocene Limestone
thrusting over Oligocene red clastics.
In the foreground:
Dilara, Nuri's daughter.
|Nuri drilling in a
Late Miocene site, with Paul van Dijk (ITC) and Dilara, both preparing
for him a good clay to sample.
de Bruijn was always on-line with his GSM, and directing us where he found
rodent teeth, the best tool for dating continental Neogene sediments.
fieldwork does not always mean sampling. From time to time, the crew had
to take care of Dilara, especially when she was naughty, e.g. strangling
The investigations were supported
Institute for Aerospace Survey and Earth Sciences, Enschede, Netherlands)
and Utrecht University. Financial support was provided by the Turkish Government.
data in combination with palaeostress data and anisotropy of magnetic susceptibility
orientations were used to develop a tectonic evolutionary model for the
Early Tertiary part of the Omega-shaped Cankiri Basin (Turkey). The results
reveal clockwise rotations in the NE and anticlockwise rotations in the
W and SE corner of the basin. The magnetic inclinations indicate a northward
drift of the Cankiri Basin and support an indentation model for the Kirsehir
Block. It is proposed that the shape of the Cankiri Basin was the result
of indentation of the Kirsehir 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
et al., 2003)
Kaymakci, N., Duermeijer,
C., Langereis, C.G., White, S.H. and van Dijk, P.M. (2003). Palaeomagnetic
evolution of the Cankiri Basin (central Anatolia Turkey): implications
for oroclinal bending due to indentation, Geol. Mag., 140 (3),
2003, pp. 343–355.