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• Dri11-hole RB-19 <br />[All depths are in feet; to convert to meters, multiply by 0.304$] <br />Location: SIAGSWk sec. 19, T. 4 N., R. 66 U., Ractlesnake Butte quadrangle, <br />Rout[ County, Colorado <br />Surface elevation: 7.920 ft <br /> Depth (ft) <br />Lithologic description From To <br />Colluviwa, clay; burn material---------------------------- 0 15 <br />Clay, light-gray------------------------------------------ 15 20 <br />Sandstone, medium-gray, fine-grained; carbonaceous shale-- 20 35 <br />Sandstone, medium-gray, fine-grained; carbonaceous shale <br />(more than above)--------------------------------------- 35 40 <br />Sandstone, buff-white, very fine grained, very clean------ 40 45 <br />Sandstone, medium-gray, fine-grained---------------------- 45 50 <br />Coal------------------------------------------------------ 50 51.5 <br />• Sandstone, pale-yellowish-orange to pale-yellowish-brown, <br />fine-grained grading to very fine grained--------------- 51.5 65 <br />Sandstone, medium-gray, medium-grained; carbonaceous <br />shale--------------------------------------------------- 65 70 <br />Sandstone, light-gray to medium-gray, medium-grained, with <br />carbonaceous shale lamina[ions-------------------------- 70 85 <br />Shale, light- to medium-gray; light- to medium-gray <br />silts[one----------------------------------------------- 85 90 <br />Sandstone, pale-yellowish-orange to pale-yellowish-brown, <br />fine-grained; Light- to medium-gray shale and also car- <br />bonaceous shale----------------------------------------- 90 95 <br />17 <br />LJ <br />