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Slope Stability Analysis <br /> WJE <br /> June 29,2018 <br /> Page10 <br /> s ), "i4 �} •r+ S,3 e x <br /> lt 7 Approximate '" <br /> .*. Site Iocallon _•-�..:�, f ,i..._;� fM ;_✓ <br /> r <br /> �. <br /> Pv► _l -!1 4�„1�°'�y^` f I f S it 4{ � 41� • X S siz, <br /> imi <br /> Unit Description per Tweto et al.(1978) <br /> Unconsolidated deposits.Qg(Pleistocene):Young gravels(Bull Lake and younger)-stream.terrace.and outwash gravels <br /> Basalt of Bimodal Suite Tbb(Pliocene and Miocene)-Dense black resistant alkali basalt in lava-flow layers 5-200 ft thick,and interbedded tuffs and <br /> volcanic conglomerates.Greatest preserved thicknesses are 900 ft on White River Plateau and 800 ft on Grand Mesa.Ages determined from several <br /> localities range from 8 to 23 mya(Larson et al., 1975). <br /> Eagle Valley Evaporite,Pee(Pennsylvanian):Gypsum,anhydrite,and interbedded siltstone and minor dolomite:contains thick salt at depth in some <br /> places,as shown by wells drilled for oil and gas. Intertongues with Minturn,Belden,and Maroon Formations and grades into fine-grained clastic rocks of <br /> Eagle Valley Formation.Diapiric in structural configuration in many places.especially in large area in central part of quadrangle.Thickness <br /> indeterminate. <br /> Weber Sandstone and Maroon Formation.PPwm <br /> Figure A.2. Geologic snap of site after Tweto et al. (1978) <br />