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International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B4. Istanbul 2004
region of Kafar Dibbin. North of the trough, near the town of
Jist Ash-Shaghour, Pliocene lacustrine sediments appear from
under Recent dried swamps and then Helvetian and Oligocene
limestone crop out. The latter are exposed in the deep canyon of
the Nahr El-Aasi River and compose the core of the Dibbin
dome. The dome is somewhat elongated in a North-North-
Western direction. The dip of the bends is gentle and usually
dose not exceeds 5° Only near the faults, which cut the
structure at an oblique angle, inclinations reaching 30° are
noted.
REMOTE SENSING APPLICATIONS
The AL-Ghab Graben is reflected in the intensity of neo-
tectonics affecting it. Neo-tectonics is active, such as active
faults. TM optical and radar data are used to image, for
example, fault scarps and actively growing folds. Visible and
infrared imagery with moderate resolution is used to map
lineaments, which are often surface expression of deep-seated
fractures. The Interpretation of Space Imagery TM shows that
the surface expression of AL-Ghab Basin is flat plain with
almost no topographic relief. The plain is ~60 km long and ~15
km wide ( Fig.3 ). Faults would be expected along the western
margin given a typical fault step-over arrangement for AL-
Ghab Basin.
Figure 3, TM image ( Colour composite ) covers A L-Ghab
Graben . Date : 22 /08/1998 , Landsat -5 .
471
To the south of AL-Ghab graben , between two strands of the
Dead Sea Fault System ( DSFS ) is the Missyf Graben
(Figure 4). The eastern fault strand can be traced northward at
the surface along the eastern margin of AL- Ghab Basin before
bifurcating to the north-northeast.. The basic structure of AL-
Ghab Basin is a fault-controlled double depocenter. The main
depocenter is positioned beneath the southern portion of the
surface plain, and slight northward migration of that depocenter
with time is clear from the seismic data( fig.5). Also apparent
are a mid-basin ridge and a second smaller depocenter to the
north. Despite out interpretations that have used all available
data, several issues regarding the evolution of AL- Ghab Basin
remain unresolved. Furthermore, while the fault geometry
controlling AL- Ghab Basin roughly fits the pattern of a 'step-
over' basin), AL- Ghab Basin shows several departures from
this simple transform-parallel extension case. Transverse
structures, such as those found in AL- Ghab Basin, are also
commonly observed in other strike-slip basins. The digital
image processing of Radar imagery showing the presence of
active and fresh faulting zones along the AL-Ghab Graben
( Fig. 6 ). TM and SAR-DTM data, also showed a gradual color
tone and interruptions of linear-ellipse shapes which reflecting
the presence of discontinuity contours along the fault zone
extension ( fig.7 ).
20 km
e Wells
— — Faults
T Basalts
M | - Middie Late
8 Miocene
Basalts
EX - Late Miocene
Early Pliocene
Basatts
Q | - Late Pliocene /
Quaternary
Quaternary
Paleogene
[ ] Cretaceous
usd
Mediterranean Sea
N35"
f x Jurassic
ERES
[] Ophiolite
L—
Figure 4 , Shows the AL-Ghab and Missyf Grabens
And the Dead Sea Fault System ( DSFS )