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U.S. GEOLOGICAL SURVEY McCALLUM AREA <br />DRILL-HOLE LOG, JACKSON COUNTY, COLORADO <br />Hole No. E8B Map Eaele Hill Date logged 9-8-77 Elevation (f t) 8245 <br />Location: T.~_N., R. 7g W., sec. 9 800 FS L 850 FW L Cored: ~ Yes ®No <br />Drilled depth 300 Logged depth 300 Drilling medium Mud Fluid level 1 <br />Geophysical logs: <br />Spontaneous potential (SP) : Scale 50 my/in Logging speed 20 fpm <br />Resistivity (RES): Scale 1, 000 ohms/in Logging speed 20 fpm <br />Gamma (G): T.C. 4 Scale 200 cps/in Logging speed 20 fpm <br />Density (DEN): T.C. 4 Scale 3.2 Kcps/in Logging speed 20 fpm <br />Remarks: Dip of strata is approximately 36o NE. <br />H °al GEOPHYSICAL LOGS I DEPTH <br />LITHOLOGY <br />`~ G SP RES DEN FT M <br />0-20 Sandstone, yellowish-brown, <br />medium-grained to very coarse <br />grained, poorly consolidated, <br />some gravel <br />20-38 Mudstone, yellowish-gray <br />38-73 Sandstone, pinkish-gray, medium- <br />to coarse-grained, subangular, <br />interbedded mudstone, medium- <br />light-gray <br />73-113 Mudstone, light-gray <br />113-147 Siltatone, white <br />147-167 Sandstone, white, very coarse <br />grained to gravel <br />167-180 Mudstone, medium-gray <br />180-246 Coal, 180'-246' with parting of <br />mudstone, gray and brownish-. <br />black, at 225' <br />246-250 Mudstone, medium-gray <br />250-279 Coal, with parting of <br />mudstone, medium-gray, at 260' <br />(and at 270'?) <br />279-300 Mudstone, brownish-gray and very <br />light gray <br />10 <br />50 <br />20 <br />100 30 <br />40 <br />150 <br />50 <br />200 60 <br />70 <br />250 <br />80 <br />90 <br />35 <br />