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U.S. GEOLOGICAL SURVEY McCALLUM AREA <br />DRILL-HOLE LOG, JACKSON COUNTY, COLORADO <br />Hole No. G22 Map Gould NW Date logged 8-29-77 Elevation (f [) 8196 <br />Location: T. 9 N. , R. 79 W. , sec. 24 : 825 F N L 1950 FW L Cored: ~ Yes Qx No <br />Drilled depth 261 Logged de pth 261 Drilling medium Air Fluid level 19 <br />Geophysical logs: <br />Spontaneous potential (SP): Scale 100 my/in Logging speed 20 fpm <br /> <br />Resistivity (RES): Scale 250 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: Din of strata 25-30 o W. <br /> <br />LITHO <br />O <br />Y ~ ~ GEOPHYSICAL LOGS <br />L <br />G H o <br />f° <br />G <br />SP RES <br />DEN <br />ehal <br />brownish- <br />ra <br />0-11 Mudstone <br />, <br />y, <br />g <br />y <br /> <br />C <br />l <br />11 <br />oa <br />-14 - <br /> <br /> - == _- <br /> <br /> <br /> <br />14-58 Mudstone, gray and brownish-black _-- - -__- <br /> r <br />58-76 Coal <br />brownish-black mudstone -_ - <br />; <br />; __ _ <br />_' <br />j <br />_. - <br />_ <br />carbonaceous shale _ -- =-= <br />-= <br />= <br /> <br />76-97 M <br />d <br />t <br />b <br />i <br />h-bl <br />k <br />d __ <br />_ <br />___ <br />_ <br />u <br />s <br />one, <br />rown <br />s <br />ec <br />an <br />medium-gray <br />97-104 Coal and brownish-black mudstone <br />104-109 Mudstone, brownish-black and <br />light-gray <br />109-111 Coal <br />111-134 Mudstone, brownish-black and <br />light-gray <br />134-142 Coal, 134'-136' and 140'-142'; <br />brownish-black mudstone <br />142-187 Mudstone, light-gray and <br />brownish-gray <br />187-194 Sandstone <br />very light gray <br />fine- <br />-- <br />=_ <br /> <br />_-- <br />=__ <br />-- <br />-- <br /> <br />--' <br />'_- <br />--_ <br />- _ _ <br />_ <br />-_~ ___~~_~~__~ ~_ <br />~__ <br />_- ~ =~ <br />_,_ . <br />_ - - -- <br />- - -_ ___._~ __-- <br />_ '~, _ -- ~-F- <br />- =_-_ . <br />_ -__~~ <br />F_=: _= --_-__ -_ <br />-_ -" -_ _ _ __= <br />_- <br />_ - <br />, <br />, <br />to medium- <br />rained <br />well- _ _ <br />- _.: <br />=- <br />_ <br />= <br />_ = - <br />g <br />, ___ _ <br />_ <br />- <br />rounded, well-sorted <br />194-200 Mudstone, light-gray <br /> <br />200-261 Sandstone, very light gray, <br />fine- to medium-grained, well- <br />rounded, well-sorted, inter- <br />dd <br />b <br />d <br />ith li <br />ht- <br />d <br />[ <br />-- <br /> <br /> <br /> <br />__ _ <br />=- - _~ <br />- __ -__ <br />_ _, <br />- _ =1=-- -- -_ --- <br />- --_ -r- <br />- _ ~- <br />-_ r ~-•- <br />== <br />e <br />e <br />w <br />gray mn <br />g <br />s <br />one - <br />DEPTH <br />FT M <br />0 <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 />300 <br />63 <br />