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U.S. GEOLOGICAL SURVEY McCALLlA1 AREA <br />' DRILL-HOLE LOG, JACKSON COUNTY, COLORADO <br />Hole No. G15 Map Gould tiW Dale logged 8-25-77 Elevation (f t) 8,400 <br />Location: T.~_N. , R._]~_W. , sec.: 1600 F S L 1975 F E L Cored: ^ Yes Q No <br />Drilled depth 140 Logged depth 140 Drilling medium air Fluid level 116 <br />Geo hysical 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 200 cos/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 21° SW. <br /> <br />TH ~ ~ <br />° GEOPHYSICAL LOGS <br />OLOGY <br />LI a <br />H <br />~' <br />G <br />SP RES <br />DEN <br /> <br /> <br /> <br />-77 Mudstone, brown and gray - <br /> <br /> <br />__ - - - i <br />= i <br />_ - i <br />= S~' <br />I <br /> <br />77-120 Coal - - ~_ <br />= __ <br />- <br />= - - --- <br />120-132 Mudstone, medium-light-gray __ _ <br />_ <br />-:_ '- _ __; <br />132-140 Sandstone, very light gray, <br />: <br /> <br />fine-grained : <br />- - . <br />__ _- ,_____~1. <br /> <br />DEPTH <br />FT M <br />10 <br />50 <br />20 <br />lOD 30 <br />40 <br />150 <br />50 <br />200 60 <br />70 <br />250 <br />80 <br />F 90 <br />47 <br />