Geoscience Reference
In-Depth Information
al.1998). The overall displacement along the fault since the time of eruption, in other words
the total length of pull-apart, could be estimated from the displacement of the famous “Krak
des Chevaliers” in respect to the main Shine volcano (Fig.9). This gives 16 km, significantly
less than other estimates (20 Km, Chorowicz et al 2005). This would give an average
displacement rate of 2,7 - 3,3 mm/year, in line with estimates along the Wadi Araba fault, in
the northern part of the Levant fault (4,6 +/- 2 mm/year, with a decreasing value of 2,3
mm/year for the last 12 ka , Le Beon 2008). In Syria, the displacement rate in the region of
Homs corresponds to a maximum value. The movement rate, estimated by different
methods, decreases significantly in the others regions. It is: 1-1.5 mm/yr in the region of
Palmyra, less than 1 mm/yr in the Eastern and North Eastern parts of the country (Bilal
2009 b, Tab.1).
Region Movement rate /mm.Yr. Method
El Ghab, the Syria rift 2, 7-3, 3 Basaltic displacement
Palmyra chain 1, 5 Monuments cracks
Eastern Syria, Russafeh 1-1, 5 Monuments cracks
Afrin region 1 Field measurements
Northern east Syria < 1 Field measurement
Table 1. Movement rate in different regions estimated by different methods
Fig. 9. Movement rate estimate, from field observation and satellite imagery analysis
(Landsat TM 1995). ab: displacement, estimated at 16Km during 6 My, the age of the Homs
basalt.
Search WWH ::




Custom Search