Journal
JOURNAL OF STRUCTURAL GEOLOGY
Volume 33, Issue 4, Pages 433-457Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jsg.2011.02.003
Keywords
Slump; Folds; Earthquakes; Mass transport complexes; Gravity-driven deformation; Dead Sea Basin
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Funding
- Carnegie Trust
- Royal Society of Edinburgh
- Israel Science Foundation [1539/08]
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The Late Pleistocene Lisan Formation preserved next to the Dead Sea provides exceptional 3-D exposures of folds and faults generated during soft-sediment slumping and deformation. It is possible to generate a range of four different scenarios associated with overprinting in a single slump event. The progressive evolution of slump systems may be broadly categorised into initiation, translation, cessation, relaxation and compaction phases. Thrust packages typically define piggyback sequences during slump translation, with back-steepening of imbricate faults leading to collapse of folds back up the regional palaeoslope. Detailed evaluation of slumped horizons may also permit structures to be traced across apparently separate and distinct slumped units. The recognition that slumps may be reworked by younger seismically-triggered events suggests that in some cases the seismic recurrence interval may be shorter than previously anticipated. (C) 2011 Elsevier Ltd. All rights reserved.
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