Friday, 10 October 2008
Image of the week #5
A slightly different image this week; this comes from the paper I've just had accepted for publication in the Journal of Stuctural Geology. This is a normal fault plane from the Gulf of Suez (surprise!), modelled in TrapTester software from our LiDAR data, and contoured for throw values (throw is the amount of vertical displacement of strata across the fault). We are in the hanging wall, looking toward the fault plane. As is typical, the throw contours are elliptical, and throw is highest at a roughly central point, decreasing outward. A reasonable assumption is that the fault initiated at the point of highest throw. This occurs at a level above the pre-rift/syn-rift contact, suggesting that this fault initiated within the syn-rift strata relatively late in the history of the rift.