| Popis: |
The results of several seismic reflection surveys in the Jericho area, north of the Dead Sea, are described and the data are used to analyze the structure of this part of the Dead Sea Rift. In particular, we describe the structure of the Dead Sea Transform, which in this area is a zone of intense deformation, rather than a distinct fault plane. The transform has a westerly dip, away from the rift, suggesting that it may have a reverse-faulting component. Associated with the transform are several folds, of which the best documented is the Kalia Monocline, immediately north of the Dead Sea. The Kalia Monocline lies along the transform and appears to be a young structure associated with it, indicating that this part of the plate boundary is characterized by local compression. The southerly extent of the Kalia Monocline is not clear presently, but the available data suggest that the compressional field also characterize the northwestern part of the Dead Sea Basin. The other folds appear north of the Kalia Monocline and seem to be similar to it. They are, most probably, also the result of recent compression along the transform. A number of mechanisms of small earthquakes in this area are computed and several of them show thrusting, suggesting that the local compression is still active. |
