Edited by James E. Palmer and Russell R. Dutcher - University of ...

Engineers. The reservoir, completed in 196'1and an integral part sf a comprehensiveflood-control plan for the Ohio and MississippiRivers, will reduce flood stages downstreamfrom the dam and in Green RiverValley. Normal pool elevation csf the lake is495 feet (151 rn) and the flood pool is 524feet (160 m). The elevation of the lodge isapproximately 578 feet (1174 m). The trimand part of the veneer on the Dodge areWardinsburg Sandstone from Logan County,Kentucky.Leave Rough River State Resort Park. Turnleft on Kentucky Route 79.Junction. Kentucky Routes 74 and 736. Continuesouth on 79.Junction Kentucky Routes 54 and 79. Continuesouth on 79.Junction Kentucky 79 with U.S.Caneyville. Continue southwest on Kentucky79.Enter Western Kentucky Parkway westbound.Milepost 94.For the next 20 miles (32 lam) the fieldtrip (fig. KY-"I) will prsceed up-section(down-dip) through the Tradevvater Formation.At the Ganeyville entrance to the WesternKentucky Parkway the Vienna Limestoneis about 300 feet (91 m) below surface (Gildersleeve,in press). Rocks exposed at thispoint are very near the Caseyville-Tradewatercontact. At the Beaver Dam Plaza the Viennais encountered at a depth of about 2050 feet(320 m), reflecting a dip rate of about 40 feetper mile (7.6 rn/l Itrn).The thin interbeds of dark gray shale and finegrainedsilty sandstone (subgraywackej exposedin roadcuts for the next two miles suggestdeposition in a quiet, restricted bay.Scattered sandstone lenses may indicate thesites of small intra-bay channels.The original road was constructed 200 feet(61 m) north on fill composed principally ofthe dark shale visible here and in the nextroadcut. This shale fill proved unstable; despitestrenuous efforts, the road cotlapsed andwas relocated at the present site on bedrock.Small intra-bay channels in bay-fill shale.Thin unnamed coal bed typical of the area.This sandstone body may be channel fill; however,the thin tabular beds and gradational upperand 1owe.r boundaries are suggestive ofsplay deposits.Low angle trough-type cross-bedding; probablypoint-bar accretion beds (Milepost 87).Coal bed on right is a member of the Elm Lickcoal zone which to the west is currently underactive exploitation at numerous small tomedium surface mines. In the hill to the right,a slightly higher coal was surface mined. Onemile south, this coal bed and one about 30feet (9 m) lower were sur.face mined. Whetherthese three coal beds are discrete units or"splits" of the Elm Lick is undetermined;similar occurrences of two or three coal bedsin close vertical proximity are common in theTradewater Formation around the southeasternrim of the Illinois Basin.Sandstone-filled channel incised into darkgraybay-fill shale (fig. KY-13). This sandstoneis typical Tradewater and Carbondale channelfill with shale clasts and coal fragments commontoward base. Festoon cross-beds dip predominantlyeastward. The unit becomes finergrained upward, grading into siltstone andthen dark gray shale, suggesting a shifting ofthe channel followed by a gradual increase ofwater depth until bay conditions returned.The sandstone in this cut demonstrates theeastward flow direction of the channel visibleat the last cut. The Elm Lick coal bed poorlyexposed at road level is overlain by bay-fillshale with thin overbank sandstone lenses andis interrupted at the top by channel-fill sandstone.A small coal mine into the Elm Lickformerly extracted coal beneath this hill. Theresulting bowing and fracture of rocks abovethe mined areas is evident in the roadcut onthe right. From here to Beaver Dam the parkwayskirts the north edge of a Caseyville sandstonepaleochannel, the Rochester Valley(Davis and others, 1974). Figure KY-14 showsthe boundary of the paleovalley and thicknessFIELD TRIP SIROAD LOG