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International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B4. Istanbul 2004
CONCLUTIONS
The results are consistent with the observed surface faults that
show a greater amount of relative motion on the eastern basin-
bounding strike-slip fault. Observations from AL- Ghab are
echoed in theoretical models that show cross-basin oblique-slip
faults accommodating initial basin opening, but most
subsidence on the basin bounding faults. A northward shifting
depocenter, and the subsequent development of a second
depocenter in AL- Ghab Basin, are due to increasing fresh
faults overlap with time and step-over of the lateral motion
from the eastern to the western faults.
ARABIAN PLATE
Figure, 12
The system formed, initially, as a result of the break up of the
Arabian plate from the African plate since the mid-Cenozoic
(fig.10 ). The tectonic evolution of Syria has been profoundly
affected by movement on nearby Arabian plate boundaries,
Figure 9,
which almost completely surround the country. This
deformation is evidenced in large-scale geologic structures
within Syria, which include the Palmyrides folds(fig.10). The
northern continuation of the Dead Sea Fault into Lebanon and
Syria is comprised primarily of the Serghaya ( SF ) and the
Yammouneh (YF ) faults that trace parallel and close lines in
between the Lebanon and Anti-Lebanon mountain chains
( Fig. 11 ) . The SF is a branch of the main Dead Sea fault in
southwestern part of Syria, while the YF merges with the AL-
Ghab fault (GF) near the Bouqeah plain in western Syria. The
south-north trending GF in turn extends parallel to the Syrian
coast, and merges with the major East Anatolian Fault ( EAF )
in southern Turkey ( Fig. 12 ). This complex system in Lebanon
and Syria has been the location of numerous large historical
earthquakes ( M» 6.5). Ambreasys and Barazangi ( 1989)
reported that the fault zone may still be active and capable of
generating more destructive earthquakes in the future with an
estimated long return period of 200-350 years.
30*
NAF North Anatoliso futt — a. — Thrust fault
EAS East Anatolian fault Owl Strike-skp fault
DST Doad Sea transform //
Transform fault
Sn. Plate doundary
Figure, 10
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Figure, 11