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The Oligo-Miocene deepwater system of the Levant Basin

The Oligo-Miocene deepwater system of the Levant Basin

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Figure 31: Stratigraphic section along <strong>the</strong> Qishon-Zevulun Graben. Note <strong>the</strong> absence <strong>of</strong> Early Pliocene sediments in <strong>the</strong> QishonYam 1 well, where Late Pliocene sediments overlie a section penetrated between 1,200 and 1,550 m <strong>of</strong> alternating anhydriteand marl with a mixed and chaotic assemblage <strong>of</strong> <strong>Oligo</strong>cene to Messinian fauna. Based on <strong>the</strong> above, it is suggested that (1)<strong>the</strong> alternating marl and anhydrite interval is a slumped pile <strong>of</strong> Messinian sediments with reworked older rock debris and faunalelements; (2) <strong>the</strong> absence <strong>of</strong> Early Pliocene sediments in <strong>the</strong> Qishon Yam 1 well is similarly <strong>the</strong> result <strong>of</strong> down slope slumping.This interpretation disagrees with <strong>the</strong> <strong>Oligo</strong>cene age assigned to <strong>the</strong> evaporites by Schattner et al. (2006). <strong>The</strong> evaporites andoolitic limestones penetrated in <strong>the</strong> Shefa Yamim boreholes are correlated with <strong>the</strong> Gesher and Bira evaporites and ooliticlimestones <strong>of</strong> <strong>the</strong> nor<strong>the</strong>rn Jordan Valley, thus providing an evidence for <strong>the</strong> coeval deposition <strong>of</strong> <strong>the</strong> Dead Sea Rift evaporateswith <strong>the</strong> Messinian salinity crisis. Datum: MSL.Early Pliocene0mPleistocene5001000Legend:ShaleMarlstoneLimestoneChalk1500 15501590TD 1800mSandstoneConglomeratestratigraphic contacthiatus or unconformitySlumpedMavqiimTD 1027mTD 300mTD 299mOolitic limestoneGypsum or AnhydriteBeeri GypsumY a f o F m .Qishon Yam 1Shefa-Yamim 5Canusa 9 Shefa-Yamim 2 Shefa-Yamim 3Y a f oTD 291mEn ZetimSenonianundefinedBet GuvrinLate Eocene-Early <strong>Miocene</strong>MareshaMid. EoceneAdulamE. EoceneLate Pliocene & PleistoceneSlumpedlower YafoInterbeded marls & reefal calcarenite<strong>of</strong> <strong>Miocene</strong> agePattish ReefEarly MessinianGesherBira20km 3.6km 1.9km 3.9km36058073088512001245- 54 -

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