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U.S. GEOLOGICAL SURVEY McCALLUM AREA <br />• DRILL-HOLE LOG, JACKSON COUNTY, COLORADO <br />Hole No. J6B Map Johnny Moore Mountain Date logged 8-25-77 Elevation (f t) 8250 <br />Locatlon: T. 8 N., R. 78 W., sec. 11 600 FN L 700 FW L Cored: ~ Yes ©No <br />Drilled depth 79 Logged depth 79 Drilling medium Air Fluid level 65 <br />Geophysical logs: <br />Spontaneous potential (SP): Scale 50 my/in Logging speed 20 fpm <br />Resistivity (RES): Scale 500 ohms/in Logging speed 20 fpm <br />Gamma (G): T.C. 4 Scale 100 cps/in Logging speed 20 fpm <br />Density (DEN): T.C. 4 Scale 16 Kcps/in Logging speed 20 fpm <br />Remarks: Dip of strata is approximately 36° SE. Twin drilled, coal cored in second <br />hole. <br />H of GEOPHYSICAL LOGS I DEPTH <br />LITHOLOGY 7~~~ <br />`~ G SP RES DEN I Ff I M <br />0-12 Soil, sandy, yellowish-gray <br />12-19 Sandstone, white, medium-grained, :. <br />poorly consolidated __ <br />19-45 Mudstone, light-gray __ <br />45-72 Coal <br />72-79 Mudstone, brownish-gray and 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 />F 90 <br />27 <br />