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<br />MONI70R WELL LITHOLOGIC LOG
<br />Page 1 of 2
<br />Monitor Well Name GW-IJ13(WIJ0~131
<br />Drilling Date U0/`0/90
<br />Geophysically Logged By tJone
<br />DEPTH (FTl
<br />Geologic Unit Monitored_
<br />Logged By J.S. Dingman
<br />Total Depth Drilled (ft)
<br />DESCRIPTION AND COMMENTS
<br />Dakota Coai Underburden
<br />147.0
<br />0 - 1 SILT, sandy, red-brn
<br />i - 3 SiL~i, .sandy, rued brn
<br />3 - 5 SILT, sandy, It red-brn
<br />5 - 21 SAIJDSTOiJE, fn grnd, v slty, It brn - el, med hd
<br />21 - 23 SILTSTONE, soft, ciaye ]t brn
<br />23 - 25 CLAYSTOIJE, soft, white, altered (koalinite; volcanic ash)
<br />?_5 - 29 SAIJUSTOIJE, v fn grnd, and SILTSTOIJF, intbdd, ]t brn, soft
<br />29 - 34 S':LTSTONE and CLA1'STOIJE, it brn, intbdd, reed hd
<br />34 - 41 SILTS TONE, med brn, med hd
<br />S1 - 74.7 SILTSTOIJE and SHALE, intbdd, grey-It brn, occ carbonaceous H 0 @ 7~
<br />74.7 - 77.6 SAtJ;)STOIJE, It grey
<br />i7.6 - 79.2 SI4UT (carb. shale), d;< brn - blk
<br />79.2 - 01.0 SHALE, v carbonaceous
<br />31.0 - 62.9 COAL (Upper Dakota)
<br />82.9 - 86.0 SAiDSTONE, grey
<br />36.0 - 69.1 SHALE, blk
<br />89.1 - 95.0 COAL (Lower Dakota)
<br />95.0 - 97.0 SANDSTONE, fn grnd, It grey
<br />97 - 98 SANDSTONE, as above, intbdd w/ sltst, dk, hd
<br />96 - 99 SiLTST0IJE, dk grey, hd
<br />99 - 103 SAIJDSTOIJE, as 97' -9a' , intbdd w/s l tst, dk grey, med ltd
<br /> w/ increasing % of ss
<br />1D3 - 105 SAtJDST0IJE, fn-med grnd, It grey - med brn, hd
<br />105 - 114 SiLTSTOiJE, dk grey - blk, med hd, carbonaceous
<br />114 - 119 CLAYSTONE, n>ed grey, soft
<br />119 - 120 SHALE, blk, carbonaceous
<br />7?_0 - 121.4 COAL (1Jucla)
<br />D-3
<br />Revised 11/01/86
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