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<br />0941 <br /> <br />Table 3-1. Relative Stratigraphic Position of Important Sub-Units <br />of the Parachute Creek Member on NOSR 1 (Taken from <br />oil yield histograms contained in Resource Assessment <br />Naval Oil Shale Reserve No.1, TRW, 1979) <br /> <br />The Big Three, located in the upper part of the Parachute Creek <br />Member, is a distinctive series of three thin (1 to 2 feet) rich oil shale <br />beds occurring in a stratigraphic interval of approxmately 30 feet. This <br />marker bed crops out in all the major drainages on NOSR 1. On Trapper <br />Creek, outcrops of the Big Three are found near the headwaters and then dip <br />beneath the surface. It then crops out again approximately 1/2 mile above <br />the confluence with Northwater Creek. On Northwater Creek, outcrops are <br />found near the confluence with Raspberry Creek downstream to the confluence <br />with Trapper Creek. On Ben Good Creek, the Big Three is exposed at the top <br />of the falls. On East Fork Parachute Creek, this marker is exposed above <br />the confluence of JQS and Golden Castle Gulches, and well up into its major <br />tributaries. Figure 3-6 is a structure contour map drawn on top of the Big <br />Three showing the approximate area of outcrop. <br /> <br />The Stillwater is a relatively thin rich zone, located approximately <br />40 feet below the base of the Big Three. Stillwater zone outcrops are <br />found in appproximately the same area as the Big Three. However, it is not <br />found in the headwater area of Trapper Creek, nor in the Ben Good Creek <br />drainage above the falls. <br /> <br />3-13 <br />