cupied
din, Siirt.
36%-430 E.
ounded by
s. lhe
evsing all
slopes
"auras and
isula
itary basin
of the
past 20
lls and the
majov oil
ever there
lity and
y was
1S used in
975. The
overs an
dy consist
Ye as
and 5 ved
and
e and while
rotations
under the
lure and
veological
val
; of the
Geological Framework
The avea studied is located on the northern extension of the Arabian
plate and the south of the orogenic zone of the Taurid. The geological
evolution of the region has been affected by both the periodic pulses of
the Arabian plale and the movements of the Taurid orogenic zone.
There is a continious sedimentalion since Cambrian lime. The
sediments of Paleozoic Mesozoic and Tertiary ave composed mainly of
shallow sea deposits. The basin has undergone uplifling several limes.
The intensive folding started in Oligocene and the paroxism occured in
late Miocene. A result of this folding sequence, Upper Miocene sedimenls
show extensive thrusting and overturning.
Magmatic activities mainly belong to lhe Alpine ovogenic phase. The
ultrabasic rocks of Upper Cretaceous-Paleocene crope oul on the major
leclonic zone in the east and north of the avea studied. Basallic exlrusions
cover several hundred square kilometers and many craters exist on
Kavacadag.
In this region, oil production of the country is mainly from the
carbonate vocks of Cretaceous age.
Inlerpretational Results
The following results have been found from the study of photographs
under hand lenses.
The observations weve nol salisfactory in lhe avea where lhe bedrock
was covered by vegelation and soil. Il is clear thal this is due lo lhe
superficial nature of the photography. Bul it was vathev difficull lo
discriminate the lithologies in the areas of good exposures. In facl (he
individual slvaligvaphic units of the area ave usually thinner than lhe
linear vesolulion capability. Otherwise itis not possible to idenlify
lithological units with a Landsal imagery of 80 melev resolution.
The puttern of dissection of the terrain provides one of the principal
clues for lhe classification of rock types. On the other hand. the
differentiation of adjacent two formations with similar physical and
morphological characteristics was rather difficult.