Benjamin Medvedev

The Dead Sea Transform is partitioned into two major faults at central Arava: Wadi Arava fault (WAF) in which the main displacement is strike slip, and Zofar fault which is a mostly normal fault with a vertical displacement of hundreds of meters. Previous work from this area shows a single fault zone along WAF, expressed as small scale pressure ridges and inferred from eight high resolution reflection profiles along 10km; all the profiles are perpendicular to the fault (Haberland et al., 2007). These high resolution profiles, together with a fault-zone-waves survey (Haberland et al., 2003) show that there is a narrow fault zone. Re-examining the data by reprocessing and analyzing the subsurface structures in several perspectives show a small scale shortening structure. In the absence of a control crossing profile, a clear reflector is chosen along all profiles for geometrical analysis. The shortening structure is characterized in each profile by three points: the western and eastern...

The Ramon fault is a major element within the Central Sinai-Negev shear zone, extending across the Negev and central Sinai, from the Dead Sea Transform (DST) to the Gulf of Suez. Right lateral strike-slip motion, dated as post early Miocene, has been recorded along several elements of this system. Some evidence of earlier activity has been noticed along several faults belonging to this system, but only in few cases the nature of this activity is known. The eastern part of the Ramon fault from Wadi Geled to the DST is known from surface geology as a high angle reverse fault. A vertical separation of almost 200 meters is based on lower Cretaceous sandstone abutting upper Cretaceous units. Recent seismic lines carried out across the eastern segment of the Ramon fault reveal new information from subsurface concerning the geometry and history of the Ramon fault zone. We suggest two alternative models to image the subsurface, both leaning on interpretation of seismic lines across the faul...