The study area is located in the
eastern part of Akdağ massive and its surrounding area. The purpose of this paper
is to contribute in understanding of the regional geology. In the study area,
Akdağmadeni Lithodem represents basement rocks consisting mainly of gneiss,
amphibolite, schist, marble and quartzite The metamorphic assemblage underwent
metamorphism in the higher temperature part of amphibolite fades and was
intruded by granitoids and gabbro. The contact between metamorphics and
Paleocene volcanics is tectonic. The units showing different fodimentary
environments were deposited during Eocene. For example, in the northern part of
the area, Eocene units were represented by hemi-petegic elastics which overlie
Paleocene volcanics conformably and olistostromal rocks composed of Upper
Cretaceous mega olistolithes. Within some of the olistolithes there is a sharp
fades change between Campanian pelagic limestone and Maastrichtian turbidites.
Maastrihtian turbidites pass to the Maastrichtian-Paleocene (?) volcanics
conformably. Ophiolitic: melange overlies the olistostrome by a north
ward-dipping overthrust and, passing to the Campanian hemipelagic limestone in
the upper levels, in trio southern part of the area, the Eocene units are
represented by shallow marine deposits and overlie the metamorphic rocks
unconformably. This sequence is followed by Oligocene and Lower-Middle Miocene
continental deposits respectively. The Upper Miocene-Pliocene fluviatile and
lacustrine deposits overlie the rest of the older units unconformably. In the
neotectonic period, in the study area, the faults showing left lateral-reverse
oblique slip in NE-SW trending, right lateral oblique slip in NNW-SSE trending
and dip-slip faults in N-S trending, were developed under the control of N-S
compression.
Birincil Dil | İngilizce |
---|---|
Konular | Mühendislik |
Bölüm | Makaleler |
Yazarlar | |
Yayımlanma Tarihi | 1 Ekim 1995 |
Yayımlandığı Sayı | Yıl 1995 Cilt: 117 Sayı: 117 |
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