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40° 37r 30" <br />NV. GEOL .6-A <br />1975 <br />E hXPLANAFION <br />m <br />QV1 <br />p <br /> valley-1111 deposits <br />O <br />x <br />Gencralizcd, undifferent- <br />C inted valley-fill depo- <br />M sits comlxtsed primarily <br />N of alluvial gravel, sand, <br />u and Si1L; laying <br />vari- <br /> able cvxgx-siLion and <br />ut Lhickness (10 Lc 80 ft). <br />y I Significant shallow ayui- <br />q for throuyhtouL much of <br />UIe area. <br />Kl <br />t.aramie For'macion <br />Light- to dark-gray <br />interbedded silty sand- <br />stone, siltstone and car- <br />bonaceous 51+110; limo- <br />nite staining and other <br />oxidation products com- <br />mon; approxiuuitely 200 ft <br />of lower l..rianue pre- <br />sent within study <br />area; bedrock outcrops <br />W tlvrrrnon . <br />KIM) <br />Fox rn ; ! s ;, f:, i,, cane <br />Tart co vollow sandstvnc: <br />fine-grained, weJJ <br />sorccd; trick-bedded CO <br />passive subparalJcl <br />bedding with some low- <br />angle cross-strattllca- <br />tion; many calcarcou:; <br />.utd forruyinvu: con- <br />cretions scattered <br />Utrvugh tiro entire sec- <br />tiWt; apFrruxirnately 60 <br />ft thick. This unit <br />has been locclly mapped <br />as the Milliken Member <br />of the Fox Mills. <br />IKPIz? <br />Mcdium- to dark-grey <br />shale, siltstone, and <br />sandstona; thinly incel- <br />be:dded and yradiny up- <br />ward from shale to domi- <br />nantly siltstone and <br />silty sandstone; section <br />is 1000 to 3000 ft thick <br />and includes what. has <br />been gupied by others <br />as Lrx.•cr Fox Hills. <br />Stippled areas Show <br />prominent sandstone <br />zones. <br />Ki)