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The AAPG/Datapages Combined Publications Database
Journal of Sedimentary Research (SEPM)
Abstract
Late Pleistocene Fan-Deltas Along the Dead Sea Rift
Amihai Sneh
ABSTRACT
Late Pleistocene lacustrine fan-deltas which developed in an arid, disequilibrated submergent environment along the western fault scarp of the Dead Sea Rift are characterized by: 1) alluvial fan deposits of crudely stratified conglomerate beds and horizontal and cross-bedded sandstones. The conglomerates and sandstones are cone-shaped and comprise the entire sequence in the fan head area; 2) fan-front thick and thin interlayers of ripple cross-laminated sandstones and mudstones which constitute a sedimentary belt a few kilometers wide in front of the fan; and 3) fan-influenced detrital laminated chalks. Both the interlayered and the laminated units appear as widespread sheet bodies whose basal contacts are gradational and upper contacts, sharp and disconformable. The rapid rise of lak level resulted in the buildup of upward-fining sequences. At the end of the Pleistocene, the lake level dropped; it began to rise again during the Holocene and, contemporaneously, new fan deltas began building up.
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