The Oligo-Miocene deepwater system of the Levant Basin

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- 45 -hundred meters deep, where the Oligocene clastics overlie upper Eocene strata (Fig. 24c and 25 andBuchbinder et al., 2005).In the Hanaha-1 borehole the Oligocene incision cuts about 968 m (the thickness of the entireOligocene fill), breaching a NE-SW trending Syrian Arc fold structure (Figs. 5 and 24), thusindicating that the water depth during the Early Oligocene exceeded 1,000 m. In comparison, arange of 1,600 m water depth was estimated for the Afiq Canyon (Druckman et al., 1995) in theEarly Oligocene.A Late Tortonian incision was interpreted in the Hannah-1 borehole, based on the dating of thechannel fill underlying the Messinian evaporites (Fig. 24a). No stratigraphic gap was found betweenthe evaporites and the underlying section of the channel fill. Both were assigned the MessinianNN11a nannofossil zone (Micro-Strat, 2003). A major stratigraphic gap was found between theLate Tortonian, at the base of the channel, and the Early Langhian (early Middle Miocene)underlying section (Fig. 25). The Late Tortonian incision carved up to 965 m meters (thecumulative thickness of the Late Tortonian and Messinian canyon fill) (Fig. 24a,b).Based on the above observation it is concluded that the N marker (base evaporates) is, in fact,merely a velocity contrast between evaporites and low velocity sediments, and does not reflect anunconformity surface. The relief into which the Messinian evaporites were deposited was carved inLate Tortonian time.Near the coastline, in the Ashdod-1 borehole, the Late Tortonian canyon is about 700 m deep andalso overlies unconformably Langhian clastics similarly to the Hannah-1 borehole. It is filled by 50m of Messinian carbonate reefal debris overlain by a 150 m thick evaporitic section, which in turn isoverlain by a thick Pliocene section of ~ 1,740 m (Buchbinder et al., 2005) (Figs. 18, 21, 24 and25).The reduced evaporitic section and the significantly thicker Pliocene section overlying it (Fig. 24c)indicate the removal of part of the evaporites due to a ~ 800 m fall of the Messinian sea level(Druckman et al., 1995; Cartwright and Jackson, 2007) and thus signifies the post-evaporite incisionevent. This event is better pronounced in the Afiq Canyon, where the evaporites are overlain bylacustrine clastic sediment, reflecting the Lago Mare circum Mediterranean event.
- 46 -BMSL1400m.1500200025003000Hanna 1 Hof Ashdod 1 Ashdod 1A(sidetracking)49.5Km 1.75Km 3.5Km1921195927862869288629952914U. Torton.3040MavqiimE. LanghianYafoMessinianU. Oligocene BurdigalianLower OligoceneZiqim Fm.173918591901Bet GuvrinFm.........22202361(Pliocene)Pattish reef debrisUpper sands2460LowerclasticsLower sandsL. EoceneE - M EoceneSenonian25832964MavqiimBurdigalianShederot (Bathonian)16901785E. LanghianTalme Yafe (Albian)206121202151220523012592Legend:T.D. 2741mShaleMarlstoneZohar (Callovian)Karmon(Messinian)Bet GuvrinShetulim 11630LimestoneDolomiteT.D. 1670m?T.D. 3152mSandstoneConglomerateAnhydriteHalite350040003963?T.D. 4303mGevaram (upper Barremian)Stratigraphic contactHiatal or unconformity contactFigure 25: Stratigraphic cross section along the axis of the AshdodCanyon. The Early Oligocene canyon breached the Hanna anticline andcut deep into the Early Cretaceous section. Onshore, the Late Tortonian(pre-Pattish reef) erosion removed the entire Miocene section. Offshore,in the Hanna 1well, part of the Early and Midlle Miocene escaped thiserosion event. Sedimentation was continuous from Late Tortonian tothe Messinian in the Hanna 1 well, clearly indicating that the steep relieffilled by the Messinian evaporites originated already in Late Tortoniantimes and was not connected to Messinian sea-level fluctuations. Theminor dips of post Oligocene strata in Ashdod-1A to Hof Ashdod-1wells are not in favor of basinward downfaulting during the Mioceneas postulated by Gvirtzman et al. (2008). Datum: 1400 m BSL.
Page 1 and 2: The Oligo-Miocene deepwater system
Page 4 and 5: ITable of contentPageAbstract …
Page 6: IIIFigure 16: Depth map of the base
Page 9 and 10: - 2 -Oligo-Miocene sands were depos
Page 11 and 12: - 4 -The discoveries of the early 2
Page 13 and 14: - 6 -the southeastern part of the b
Page 15 and 16: - 8 -Legend2D survey A2D survey B2D
Page 17 and 18: - 10 -2.2 Seismic dataThe seismic i
Page 19 and 20: - 12 -conditions, and possibly sedi
Page 21 and 22: - 14 -3.3.2 Lower Oligocene sedimen
Page 23 and 24: - 16 -Druckman, 2006; Bertoni and C
Page 25 and 26: - 18 -aSWNETWT (ms)bSWHanaha-1NEMav
Page 27 and 28: - 20 -aNWSETWT (ms)bYam West-1Ziqim
Page 29 and 30: - 22 -WETWT (ms)aYam Yafo-1multiple
Page 31 and 32: - 24 -NW SEaYam West-2Plio-Pleistoc
Page 33 and 34: - 26 -A third incision surface, mar
Page 35 and 36: - 28 -4.2.2 Deep, central part of t
Page 37 and 38: - 30 -10812591167Figure 13: Time st
Page 39 and 40: - 32 -10812591167Figure 15: Time st
Page 41 and 42: - 34 -HaifaQishon302829AtlitCaesare
Page 43 and 44: - 36 -Figure 19: Depth map on the t
Page 45 and 46: - 38 -SW NEAfiq Canyon Ashdod Canyo
Page 47 and 48: - 40 -The Beer Sheva-Afiq Canyon lo
Page 49 and 50: - 42 -SWNE SW NE SW NEPlio-Pleistoc
Page 51: - 44 -SWHanaha-1NE SW NE SW Hof Ash
Page 55 and 56: - 48 -WE W E NW SEPlio-PleistoceneC
Page 57 and 58: - 50 -W EPlio-PleistoceneMessinian
Page 59 and 60: - 52 -S NPlio-PleistoceneM.-U. Mioc
Page 61 and 62: Figure 31: Stratigraphic section al
Page 63 and 64: - 56 -W ELower-slope and basin floo
Page 65 and 66: - 58 -SlopeSusita + En-GevsandsShel
Page 67 and 68: - 60 -In the Hadera Canyon the seis
Page 69 and 70: - 62 -Additional mechanisms for tra
Page 71 and 72: - 64 -The existence of channel fill
Page 73 and 74: - 66 -SlopePartly Uplifted ?Hordos
Page 75 and 76: - 68 -Oligo-Miocene sands were depo
Page 77 and 78: - 70 -Druckman, Y., Conway, B.H., E
Page 79 and 80: - 72 -Neev, D., 1960, A pre-Neogene

The Oligo-Miocene deepwater system of the Levant Basin

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