ABSTRACT
Detailed mapping near Sivrice shows that the northern margin of
the Bitlis Suture zone consists of three major
tectonostratigraphic units outcropping as distinct north-dipping
thrust slices. From south to north these are: (1) the
Pütürge Complex; (2) the Maden Complex; and (3) the
Elazig Complex.
The pre-Eocene Pütürge Complex consists of 80%
metapelite, 15% metaquartzite, and 5% recrystallized limestone.
These rocks represent a continental margin sequence that has been
metamorphosed to the lower greenschist facies. There are three
generations of structural elements: (1) a transposition foliation
and macroscopic isoclinal folds, (2) a crenulation cleavage and
mesoscopic folds, and (3) kink bands. Structural analysis suggests
that the second-generation structures were produced by a
deformation phase that was oriented northeast-southwest. The
Middle Eocene Maden Complex consists of colored melange that
contains seven lithologies (in decreasing order of abundance):
volcaniclastics, volcanics, mudstone, calcirudite, pelagic
limestone, massive limestone, and basal conglomerate. These rocks
are interpreted as near-arc basin deposits. Fine-grained
sedimentary rocks have served as the melange matrix and contain
two generations of structural elements: (1) a uniform
northeast-dipping slaty cleavage; and (2) kink bands and folds.
The Upper Cretaceous Elazig Complex consists of four units (from
bottom to top) : (1) metagabbro; (2) diabase; (3) basalt; and (4)
andesite. The basalt unit contains calc-alkaline volcaniclastic
horizons and many andesite dikes. Contacts between the units are
structural except for a gradational lithologic contact between the
diabase and metagabbro units. The Elazig Complex is interpreted as
a mafic island arc terrain.
Because of their similar orientation, the first-generation
structures in the Maden Complex probably are related to the
second-generation structures in the Pütürge Complex.
These structures are interpreted to represent Medial Eocene
assembly of the northern margin of the Bitlis Suture.
First-generation structures in the Pütürge Complex are
pre-Medial Eocene. Third-generation structures in the
Pütürge Complex and second-generation structures in the
Maden Complex probably formed during late Miocene suturing to the
south.
The Neogene East Anatolian Fault cuts these units and is
characterized by oblique-slip faulting near the Lake Hazar
pull-apart basin.
Hempton, M.R., 1982. Structure of the northern margin of the
Bitlis Suture Zone near Sivrice, southeastern Turkey. Unpublished
PhD dissertation, State University of New York at Albany. 389pp.,
+xviii; 6 folded plates (maps)
University at Albany Science Library call number: SCIENCE
MIC Film 40 Z899 1982 H45
Copies of this PhD dissertation can be ordered
from Proquest UMI
Front matter (title,
table of contents, abstract, acknowledgements) - 0.5MB pdf
file
Photo pages in dissertation
(coloured
photos
with captions) 10.5MB pdf file
Plate 1A - Geological
map
of
the
Sivrice area, SE Turkey (~1:10,000 scale) - Map part A
(uncoloured geological outcrop map) 6.1MB pdf file
Plate 1B - Geological
map
of
the Sivrice area, SE Turkey (~1:10,000 scale) - Map part B
(uncoloured geological outcrop map) 6.4MB pdf file
Plate 1C - Geological
map
of
the
Sivrice
area,
SE Turkey (~1:10,000 scale) - Map part C (uncoloured
geological outcrop map) 3.7MB pdf file
Plate 1D - Geological
map
of
the
Sivrice
area,
SE Turkey (~1:10,000 scale) - Map legend (uncoloured
geological map legend) 1.4MB pdf file
Plate E - Geological
map
of
the
Sivrice
area,
SE Turkey (~1:10,000 scale) - Cross Sections (uncoloured
geological cross sections) 1MB pdf file
Plate F - Geology
of
Hacibat
Peninsula,
Lake
Hazar,
SE Turkey (coloured outcrop geological map; scale 1:1000)
9.1MB pdf file
[map positions Google Earth - mapA kmz
pin; kmz
linked polygon; mapB kmz
pin; kmz
linked polygon; mapC kmz
pin; kmz
linked polygon]
[Hacibat peninsula map kmz
pin; kmz
linked polygon]
fold-out figures on diazo paper: outcrop
profiles 3-21;
4-48;
4-49;
regional lineament
map 10-3; regional seismicity
map 10-4
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