Full text: Proceedings, XXth congress (Part 4)

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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 ) 
  
  
  
 
	        
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