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4850 "--- '.- ('- -~ ;j J ~: PROJ DH 421 EI 4804.0 PROJ DH 14 EI 4801 4 4800 . WL /1 I G-Z4'48 1 I I I LJ 6 - 24 48 4750 11-14-68 'HOO ..- 4650 4600 4550 " Match line Dwg 382 -0 - 802 PROJ DH 3 EI 4763 0 WL EI 4747 5- 28-48 rj 11 I j II Ll r''- I] I j 85'f-,J 90'~ 95.LJ 5 - 28 48 ANGLE FROM VERT. 400 BEARING S. DH 40lC [I. 4754.3 - PROJ. DH 420 EI,4797.8 rl I I I I j - I I I I I \ I I LJ 11-21-68 pROJ DH 103 PROJ. EI 4778.8 OH 403 I~ EI47626 I~~- 1 1__ WL., I I I ~-~7-66 I .-28-4' I 1'1 I 1 P;~\ 1 IJ I I 1 E14763.0 I 1':11 I I I 1 I I I ~J II LJ 2-\7-66 DH 400 Ei 4756.0 PART 2A OF SEC, A-A OwG 382 - D - 803 PRO"I ANGLE FI'?CW VERT 500 BEARING S.120[ DH 433A E1.4760,11 PROJ ANGLE FROM VERT. 550 BEARING S.12oE DH 433 EI.4759.81 PROJ ANGLE FROM VERT. 220 8EARING S ----- DH 404C [1.4761.5 ANGLE FROM VERT 300 8EARING S DH 401 A n 4754.4 PROJ ANGLE FROM VERT 550 B(ARlNG SI20E DH 433 EI.475981 ^-. Z. " 0,:-/'-. ,,~'( ~ ,," "-. " """ ",,, """ "" ,v . ,," 0-85.0' SANDSTONE, 21t streak shale.at 73'. 85.0'-90.0' SANDSTONE and SHALE, mlxed. 90.0' -95 .0' SANDSTONE. ANGL E FROM VERT. 300 BEARING 5 DH 40lA Ei 4754.4 ~~ 0-6.3' SANDSTONE; Hardness 6-7, fine-medium grain, sugary and porous, siliceous moderately weathered, cr~ssbedded 50 -15 0, beds 0.1' -0.3' thick, carbonaceous coa t~ng and vuggy along open bedding planes. Few vugs (1/4 ) through- out, light gray; broken and fractu~ed, poor core recovery. Max. core length 0.3', average 0.3 . . . 6.3'-27.1' SANDSTONE: Hardness 7, fine-med1um gra1n! sugary, porous, siliceous, fresh exceft ~~athered Joints. Crossbedded 400_500, beds 0.1' to 2.7 t~1ck, carbon- aceous-coating and vuggy along open bedd~ng.p~anes, slight limonite-staining throughout, gray; ]01nts o~en and limonite stained (1/10") and dip verti~al to 50 , fractured 17'-18.0'. Max. core length 2.7 , average 27.ii:~i.31 SANDSTONE: Hardness 7, fine grain, sl~ghtly porous sugary, siliceous, fresh, some crossbedd~ng 450_60t, beds 0.1'-5.21 thick, carbonaceous-coat~n~ and laminae (-1/8") along open bedding planes, open ]01nts, mostly vertical with 1/4" limonite coating, light gray, fractured 41.0'-45.01 and weathered brown color, lower 2 9' Disseminated black carbonaceous material through- o~t.' Max. core length 5.21, average 1.4'. ' 613'-68 9' SILTSTONE and SANDSTONE beds. Hardness.6-7, .black'siltstone beds 0.02'-0.9' thick alternate w1th gray sandstone beds 0.1'-0.5' thick, fine grain, slightly porous many wavy shaly laminae. Major siltstone bed~ air-sl~ke, water-slake in 12 min. Max. core length 0.7 , average 0.3 I . 68.9'-90.0' SANDSTONE: Hardness 7, fine-medium gr~in,o sugary porous siliceous, fresh, crossbedded 30 -50, rusty gray. B~ds dip 200-250, many shaly lami~e 83 - 91.01, 0.01'-0.2' thick, Max. core length 1.4 , average 0.5' . i 90.0'-93.1' SILTSTONE: Hardness 7, very fi~e gra n, slightly porous siliceous, beds 0.03-0.3 thick, dip 220 light gray' to .dark gray, lower 1.5' air-slak~s, wat~r slakes in 12 minutes. Ma~. core length 0.4 , average 0.1'. PROJ ANGLE FROM vERT 530 BEARING S. DH 404 EI4761.5 PROJ ANGLE FROM vERT 480 BEARI'IJG 5 DH 404A EI.47617 PROJ ANGLE FROM vE RT 350, 8EARING 5 DH 4048 EL 47616 5-28-48 PROJ DH 116 EL 4761,2 PROJ DH 117 U EI. 4763.4 10-25-68 Ar~GLE FROM VERT. 350 BEARING S --. DH 401 EI. 4754,4 ANGLE FROM VERT 380 BE ARING N DH 402 EI. 4763.7 ANGLE FROM VERT. 3,30 BEARING N, n DH 402A Ei 4763,7 ANGLE FROM VERT. 280 BEARING N DH 4028 EI. 47635 PROJ PROJ. DH 419 DH I EL 47637 E1.4764.4 r:1 ';~9 .B' I I . . 1 [ PROJ 1 I 1 1 ANGL~~~~~~E~T 500 I 1 DH 405 j I I 1 EI 4762.6 I 1 PROJ. I I ANGLE FROM VERT 380 I I BEARING N I I ~~ 4+~i1 'OSi68 I I ANGL ~E~RRc;;;'GV~RT 430 I I ~~ 4+~f~ I I ANGLE FROM VERT 380 I I BEARING N I - ~,H 4~~f~ I I ANGLE FROM VERT 30" I I ~~A~~~~ LJ EI 4763,0 5-13-48 PART 2B OF SEC, A-A DwG 382 - D- 804 0-7 .I~' SANDSTONE: Hardness 6, fine-to medium-grained, sligh t to modera te ly wea thered, sugary texture, porous" siliceous, top 0.5' limy, crossbedded 400_600, beds 0.3- 10' thick in top 5.0' beds are case hardened, carbon- a~eous coated and vuggy, few carbonaceous laminae and 1/16" vugs thrcughout, 5.0'-7.4' Fe stained light gray to buff with black banding' several steep angled and irregular open fract~res, few open joint~ dip 700, Fe , stained in part maX1mum core length 0.7 , average 0.3 . 7.4 I -55.4' SANDSTONE: Hardness 7, fine-to medium. grained, fresh except bottom 1.2' which is moderately weathered, sugary texture J porous and s iliceou~, cross bedded 40Y-550 beds 0.7'-6.8' thick, bedd~ng planes are carbon- aceous'~oated and vuggy 37.5'-44.9'. Fe stained below 44 9' several carbonaceous nodules and fragments and soiution vugs 7.4'-15.5' several carbonaceou~ laminae 40.6'-46.7', gray to rusty gray where F7 stalI;ed with black banding in part; broken from 17.7 -18.7 , few open joints dip 700, Fe stained in.part, 3 st~ep angled, Fe stained open joints intersectIng at 28.5. Max. core length 6.8', average 0.7' above 30.4' and 1.5' below 30.4' . Water level not determined ANGLE FROM VERT. 400 BEARING S DH 40lC E14754.3 o~ k'" 1, 1 1'0 , N";, .- p.'\/' 't- 1, \'l-' ~, '/..-"'1/ PROJ. DH 418 EI. 4762.6 , w.L-i ~ IO-2co,-6S'-{\ 1 I I I I I I I I I I LJ 1(> 8-':>8 PROJ PROJ DH 417 . DH 118 EI. 4763.4 '" EI4762 8 ~lrJr- WL I III I ~L 10-29-68" I ! Ij I II I II I i ~..' I "" "~ 66 I i I LJ 10-3-68 50 I I I I PART 2 OF SECTION A-A 100 I o 50 ~ I I SCALE OF FEET PROJ ~'f'?OJ PROJ DH 5 DH 408 DH 416 f147'62,4 E' 4U;(' Ei.47612 1 r---:-lT---~ I ;:48 : 100 I I I I: I I I I ~~ I I I I I I : I I 1 LJ I I 4- '.-6B I I I 1 I I I I I LJ 10 - 25 - 68 PROJ ANGLE FROM VERT 500 8EARING s. 120 E DH 433A El. 4760.11 0"'" O-~0.3' SANDSTONE: Hardness 6 and weathered 0-6.0', ,<.A 56.01-76.0' and 88.01-90.3', other areas hardness 7 and ~ fresh sugary textured and siliceous, several carbon" "'.... "'- aceou~ laminae, shale lens B9.1'-90.3 , light graBY9.tl~_ ""'-:".' rustr gray where weathered, medium to dark ~ray ".. 90.3. Hit river alluvial deposits at 90.3 . '" "'-.No water encountered "-"- ""'''' ""'''''' ""'''''' "",,,- "",,,- ""'''-, ,,~ v , ":l q"q, OJO ...' 0-17.B' SANDSTONE: Hardness 7, fine to medi,":, grain, sugary, porous, siliceous, weathered to 4.0 , croSS- bedding at 600, beds 0.3' to 3.2' thick, carbonaceous- coating and vuggy along open hedding planes, slightly vuggy (1/4") and slightly ~imonite-stained through~ut, open joints (1/10") dip 45 , gray _ ~o buff, top 4; 0 fractured. Max. core length: 3.L, average 0.7 . 17.8'-23.0' WATER. (Indicates 1he river has undercut ba~k) 23.0'-27.7' SANDSmNE: Hardness 6, sa~e as 0-17.8 except weathered and brown color below 25.0 . PROJ. ANGi LE FROM VERT. 530 SEARING S DH 404 EI.47615 0(," " ""," "7- ~ "- "'" "".."" ,,-,"" \<:- " ~V) 'W"I(oQ:) V)V)V)""- 'Q/ o ~':';:.~:/oQ:) (';:. ,'" " PROJ PROJ DH 104 DH 104C EI,47594 EL47586 ,1 W L ,,1 I ~ '16-~2 66 2-<7 66' I I I I I ~ I 1;0-1268 I \ I I I I I I LJ 2-17-66 PROJ DH 409 U47575 ,'- I I '::11 I I I I LJ 4-11-68 PART 2C OF SEe A-A OWG.382-D-805 P'10J DH 403 EI 47626 0.['1 7r-1 I I E1.~;40,0 '! I 4 -2(,-68' : I I j 11 I, 1 J Ij IJ II I BuH 9L3r 99,Lj 4-26-68 0-7.0' SANDSTONE: Hardness 6. Fine-medium grain, suga:y, porous siliceous slightly weathered, vuggy (-1/4") 1n part, Top 1.0' li~y, crossbedded 50-2~0, b~ds 0.5'-1.7' thick few carbonaceous nodules (-3/4 ), l1ght gray; open to tight fracture 5.0'-6.5'. Max. core length: 1.7', average 0.5'. 7.0'-87.3' SANDSTONE: Hard':le~s 7, fine-medium gra~n, iJ,lod- erately porous sugary, s1l1ceous, crossbedded 5 -20 , beds 0.6'-10.01 thick, vu~gy (-1/4") with,carbol("ceous nodules (-1/2") from 29.0 -35.0' and 59.0 -63.0 , many carbonaceous laminae and limonite-staining throughout 44.7'-51.3', light gray to rusty gray with charc~al.color banding; few open joints dip 600, few open to ha1r11ne fractures steep an?led to vertical. Max. core length 10.0', average 1.5 . 87.3'-91.3' SILTSTONE: Hardness 7, very fine grain, 0 slightly vorous, siliceous, slightly crossbe~d7d 0-10 beds to.6 thick, many shaly laminae (trans1t1on to shale), some laminae wavy and brokenl light to dark gray. One o~en joint dip 60n at 88.7. Max. core length: 0.7, average 0.4 I. 91.3'-99.0' SHALE: Hardness 5, silty-clayey, fissile to block~, slight to moderate weathered.appeara~ce, ~eds dip 3 -5- and 0.3'-0.8\ thick, few s11ty lam1nae 1n upper 18", charcoal color; one open joint dii;> 49" .at 93.2', slightly air' slakes along planes of f1ss111tr' water-slakes in 10 minutes. Max. core length: 0.8, average 0.3'. 0-18.0' SANDSTONE: Hardness 6, fine..medium gr~in, su~ary, porous, siliceous, weathered, crossbedd~d 45 to 60 , beds 0.5'-2.01 thick, carbonaceous coatmg, ~ase hardened~ limy with solution ;:ugs a~ong bed~1ng.planes, top 1.0' limr, few vugs (-l/B ), sl1ghtly llmomte. . stained 11.0 -15.0', light gray t<;> buf~; few oP7n ~01nts, limy coating alon& joint planes d1p 40 , f~ ha1r11ne to, ooen fractures 55', max. core lengt~: 2.0,' average 1.5 . 18.0'-45.4' SANDSTONE: Hardness 7, f1ne gra1~, moderately porous, siliceous, fresh, crossbedded 45-60 , b~ds.. 1.3'-3.2' thick, bedding planes are open (-1/10 I, w1th carbonaceous coatin~, few pyrite crystals (-1/~6 ) and solution vugs (-1/4 ), shale (112") along bedd1'!1g plane at 25.01 light gray to buff with depth, few open joints 350 and 750 few irregular hairline::.to open fractures. Max. core l~ngth 3.2' ~ average 1.5'. 45.4'-55.3' SANDSTONE: Hardness 6, fine-medilllll grain, sU2.ary very porous, siliceous, weathered, crossbedded 45"-601, beds 1.2'-4.4' thick, solution vugs (-1/4")1, carbonaceous coating, case hardened along open (-1/8 ) bedding planes, limonite-stained throughtout, rusty gray' few hairline fractures near bedding planes, fractured and broken 46.7' -47.4'. Max. core length 4.4', average 2.0'. 55.3'-57.7' SAND and GRAVEL: River deposits, only small amount of 1-1/2" gravel retained in core barrel. PROJ DH 415 El47564 PROJ DH 422 El4754Q PROJ DH 121 EI 47558 WL 68 "0-29-68 . r-;---r-,w' TT I: I I IC-2Y S51 I I I I I I I I I I I I I I l I l I I I I I I 9 :.J 66 I I I I I I I I LJ LJ 9~25-68 10-11-68 PROJ ANGLE FROM VERT. 480 BEARING S DH 404A Ei 4761.7 o(,^- '\ \<'" " ","'- ",,,, ",-", J<',,- . """" "') ,"~ ~ ~'"V 0" +./ DH 421 E I 48040 0' 0-5.0' SANDY GRAVEL AND COBBLES: No sample 5' 5.0' -14.0' SHALE: Hardness 5, s il ty-c layey, moderately weathered, beds part -0.1 to 0.4' and dip 0_30, blocky, top 1.0' platy and limy, scattered selenite gypsum crystals along bedding planes, limonite-stained, rusty dull gray; apparent fractures due to air-slaking and removing from core barre 1, one vertical joint, gypsum- coated at 7.0', water-slakes to mud in 5 minutes. Max. core length 0.4', average 0.15 I . 14.0'-25.0' SHALE: Hardness 5 -6 , silty-clayey, fresh, beds part 0.2'-0.4' and dip 0-)", blocky, 0.1' beds of bentonite at 18.2' and 19.9', possibly bentonite 20'-25' where core is missing, charcoal cQlurj joints are hair line and part eas i ly, dip 25" -40" , air -s lakes along bedding planes 0.2' -0.4' apart, water-s lakes into 1/4" fra~ents in 5 minutes I rnax. core length 0.4', average 0.2 . 25'-41.4' SANDSTONE shaly; Hardness 7, shale 5-6, fine sandy with many shaly laminae, wavey and broken in part, shale 35.8'-39.5' and bentonite 37.4'~J8.7', crossbedded 0-100, beds 0.1'-3.3' thick, bedding planes mostly irregular and vuggy, gray with dark gray bands, shale black i vertical hairline to open fracture wil:h gypsum crystals (1/8") and Fe stained 31.7'33.8', bottan 2.0' vertical to irregular hairline fracture. One open joint with slicks at 37.3' and dips 40", shale air slakes 0.1'-0.7', outer 1/2" shale water slakes to mud in 5 minutes, max. core length 3.3', average 0.7'. 414'-81.5' SANDSTONE: Hardness 7, fine-medium grain, 'sugary texture, porous, siliceous, crossbedded 3"-15" beds 0.3'-2.8', bottom 2.5' bedding planes 0.2'-0.4' thick, few bedding planes coated with carb~naceous material and scattered laminae and banding, top 3.0 vuggy and 64.5'-65.7', steep angled tight fractures and Fe stained at 58.4', 62.4', and 69.3', gray with darker gra~ bands; trace hairline vertical fractures, broken 58' -59 , two open joints dip 600 at 63.5' and 67.8', max. core length 2. 8 " aver age 1.5 I . Water level not determined 14. PROJ DH 414 EI47564 PROJ DH 6 EL 4759.6 25' WL 0-'2'" 'I' r-rr-- 68> L-l I I 5 - 20-48 I I I I I I I I I I LJ 9-19-68 14-68 Match line Dwg 382-D-806 DH 400 EI 4756.0 o. 0-7.1' SANDSTONE: Hardness 6-7, fine-medium grain, sugary and porous, siliceous, moderately weathered, cr08sbedded 100 -200, beds 0.6' -1. 7' thick, carbonaceous coat in~ and vuggy (-l/B") along bedding planes, few vugs (-1/4 ) throughout, trace of pyrite mineralization, light gray; top 1 0' broken and fractured, several steep angled to verti~al hairUlle fractures. Max. core length 1.7', average 0.71. 7.1' -59.1' SANDSTONE: Hardness 7, Fine-medium gr~in, surary and porous siliceous, fresh, crossbedded, 5-15 beds o 9'-5 0' thick carbonaceous coating and laminae (-1/8") aiong bedding planes, vuggy (-1/4") 3B' -41.0'. Very vuggy (-1/2") with several carbonaceous laminae and very porous 501-58.0', limonite-stained 43'-45.0', light gray and rusty gray 43 I -45' j few open joints dip 600, limonite stained along joint planes 1/8" deep from 30'-45', few steen angled to vertical hairline fractures, broken 18.6'- 19.3'. Max. core length: 5.0', average 1.0'. 59.1'-83.0' SILTSTONE: Hardness 7. Very fil;'e-fj-ne grain, sli?htly porous. siliceous, crossbedded 5 -20 , beds 0.3 -5.0' thick, many shaly laminae (Transition to / shale) laminae are wavy and broken in part from 59.1'-63.0', and 74.3'-83.0', light gray to dark ~ray where more shaly; one open joint dip 60" at 68.0 , open fracture steep angle -at 74.4', Max. core length; 5.0' average 0.7'. 83.0'-88.7' SHALE: Hardness 5, silty-clayey, fissile to blocky, slight weathered appearance, beds horizontal and 0.9'-0.3' thick, top 3.0' has interbedded siltstone laminae, waVy and broken in part, charcoal color, one open joint dip 600 at 86.8', air-slakes, water-slake. in 5-10 min. Max. core length; 0.5', average 0.3'. 7.1' W.L EI. 47407 5-1-68 59.1' B3' 88.7' 5 -1-68 0-12.8' SANDSTONE: Hardness 6, fine-medium grain, sugary, porous, siliceous, weathered, cros~bedded 400-550, beds o 7' -1 6' thick carbonaceous~ coat 1ng and vug~y along open b~dding pl~nes, top 1.0' limy, vuggy (_1/4") and sli~htly limonite. stained throughout, 0.1' cement at 7.4 , dirt6 gray; few open joints limonite-stained (1/10"), dip 400 -50 , few steep angled fractures limonfte-stained and broken at 2.8'-3.6', Max. core length: 1.6 , average 0.8' . 12 8'-41 7' SANDSTONE: Hardness 7, fine medium grain, sugary, 'porou;, siliceous, fresh, crossbedded 450_600 beds 0.8'- 3 7' thick carbonaceous- coating and laminae along open b~dding pl~nes slightly vuggy (-1(,8") 14'-21' pencil line carbonace~us bands spaced 1/2' to 5" 21'-41.7', gray with black bands; few open joints slightly limonite- coated dip 400 few tight irregular fractures Max. core length: 3.7', average 1.0'. 41.71-61.5' SANDSTONE: Hardness 6, fine grain, slight}y 0 sugary, porous, siliceous, weathered, crossbedded 40 -55 , beds 0.3'-2.2' thick, carbonaceous and limonite stained along open bedding planes, limonite- stained througho~t, many solution vugs (-1/8") 43.3'-43.8', rusty ~ray, few open joints limonite-stainecJ 0/B-l/2") dip 50 and 70. at 61.5'; few tight, irre~lar fractures, max. core length: 2.2', average 0.9 . For water \eve \ data, see OH 404 C PROJ ANGLE FROM VERT 350 BEARING 5 DH 4048 fI. 4761,6 ANGLE FROM VERT 350 BEARING S DH 401 EI. 4754 4 PROJ DH 14 EI.4801 4 ,,~ 4'1 WL r I E;_ ~:BG.~ I I 23./-l 11 32'.H 375'H 0-4' SILT 4'-23' SHALE; weathered 4 1_12 '3"j black 12' 3"-23' 23'-32.5' SANDSTONE 32.5' -37. 5' SHAlE, black 37.5' -51' SANDSTONE I] 5,.LJ 6 -24-48 0-24.5' SANDSTONE: Hardness 7, fine-medium grain, sugary, porous, siliceous, slightly weathered, crossbedded at 400 bedding indistinct, carbonaceous coating and vuggy along open bedding planes, buff; slight limonite staining throughout, several open joints vertical to 300 from vertical several vuggy areas in upper 15', Max. core length 1:7', average 0.7'. 24.5'-61.0' SANDSTONE: Hardness 7, fine-medium grain, sugary, porous, siliceous, fresh and light buff color to 34.3', then core weathered light to dark bro:n c~lor and limonite-stai.ned throughout cros&bedded 40 -50 , beds indistiinct about 6" to 6.2 r thick with. carbonaceous~ coating alomg'several open bedding planes, vuggy (0.01- 0.05') lowerr 4.0', several joints limonite-coated dip 550. Max. core length: 6.2', average 1.6'. 61.0'-72.9' SANDSTONE WITH SHALE,BEDS; Hardness 6-7, dark gray to blac::k shale beds 0.01 -0.4 thick alternate with9indstome'beds 0.1'-0.5' thick, bedding planes 450, black carbomaceous material disseminated throu~hout from 61'-641. Mcu.x. core length: 0.9', average 0.4 . 72.9'-93.21 SAlliDSTONE: Hardness 7, fine-medi1.lIl,grai~, sugary, poro>us, siliceous, fresh, vuggy (0.02 -0.1 ) 72.9'-74.4',. beds 0.1'-1.3' thick dip 500 with irregular bedding vlames with alternating gray siltstone beds 0.11-0.3 thlick 86.11-93.2', open j9ints dip 450_800 . Max. core lemgth: 1.21, average 0.5 . 93.2'-105.8' SlllALE: Hardness05, Silty, clarey,.fissi~e to blocky freslh bedB dip 50 and 0.1 -0.6 thlck, alr- slakes' 96.5' - i03', water--s lakes in 10 ~inutes. Dark, gray to blacik. Max. core length: 0.8, average 0.1 . 0('\ \ \ }\ \\ \\ \\ \\ \\ 10 '\)1'~~ ,1. ,.,../" , .- l'J~ ,\' ,0 1'" PROJ DH 420 Ei 4797.8 " 15.Fj I I ,1- I 19.4" I I 35.7'H II II 103'H I I 1 I 120.7'~ 125.2'r1 133 aU 11- 21-68 PROJ ANGLE FROM VERT. 220 BEARING s. DH 404 C EI. 4761.5 0-1.5' SAND, GRAVEL, and COBBLES: No sample. 1.5'-19.4' SHALE: Hardness 5, clarey to silty, core and bedding planes weathered to 16.2 , bedding planes weathered below 16.2'. Brittle below 16.2'. Bedding plane parting 0.3'-1.0' apart, dip 50. Blocky to poorly fissile. Dull dark gray to 16.2', black below 16.2', with yellow limonite stains on bedding through- out. Joints dip 250 and 600, limonite healed (0.111). Max. core length 0.6', average 0.3'. Air-slakes, mostly parallel to bedding, water slakes to mud in 5 minutes. 19.4'-35.7' INTERBEDDED SILTSTONE and SHAlE: Hardness 6-7, siltr to fine sandy. Fresh. 28.6'-30.4' bentonitic, 30.5 -33.6' shaly. Bedding planes 0.5'-2.81 apart. Crossbedding dips 50_100. Wavy shale laminae throughout siltstone. Siltstones massive, shales blocky. Limonite- stain 28.3'-28.7'. Siltstone gray, shale black. Max. core length 2.8', average 0.81. Outer 3/8" of core 35. 7~~9~~~' to s~~gs~~~~ 5 H~~~~;:~ }~ w;~~~~to medium- grained, porous, sugary texture, siliceous. Bedding plane partings 0.3'-3.9' apart, crossbedding dips 5-200. 35.7'-39.7' scattered carbonaceous seams -1/8" parallel to bedding. 69.5'-73.5' carbonaceous-coated bedding planes 0.1'-1.0' apart, 70.0'-70.1' carbonaceous larer, 70.2' has 1/4" open vugs parallel to bedding. 72.0 has 1/8" open vugs parallel to beddinJ?; 83.8'-85.3' carbon- aceous coated bedding planes -0.1 -0.3' apart; 92.2'-92.9' -1/1611 tight, irregular, crumpled, carbonaceous-coated bedding planes. Light gray with black carbonaceous material, light yellow-brown stain 74.01-78.0; 35.71_ 39.7' vertical fracture hairline to open. Joints: 44.7' open, dips 600, 74.0' tight, dips 600, 82.2 irregular, open, coated with dark green oxide, dips 650. Max. core length 3.9', average 0.7'. 93.3'-103.0' INTERBEDDED SANDSTONE and SHALE: Hardness 57 Sandstone fine~grained, fresh, sugary texture, siliceous; shale silty, brittlel platy to blocky. Bedding planes laminated to 0.5 apart. Sandstone light to medium gray. Shale dark gray. Max. core length 0.5', average 0.2'. 103.0'-120.7' SANDSTONE: Hardness 7. Fine-to medium- grained, fresh, porous, sugary texture, siliceous. Bedding plane partings 0.3' -2.0' apart, crossbedding dips 50_150. Carbonaceous-coatings on bedding planes 1161- 116.41 and scattered throughout core. Light gray with black carbonaceous material. Max. core length 2.5', average 0.9'. 120.7'-125.2' INTERBEDDED SANDSTONE and SHALE: Hardness 5-7. Sandstone fine-grained, silty, fresh, siliceous; shale silty, brittle, laminated to plat~. Bedding mostly -0.1 , but with sandstone to 1.0 and shale to 0.4', dips 0_50. Some wavy bedding. Sandstone light to medium gray, shale dark gray. 124.7' joint? open, curved surface from bedding to dip of 400. Max. core length 1.2', average 0.4'. 125.2'-133.8' SHALE: Hardness 5-6. Clayey to silty, fissile to platy, fresh. Bedding -0.1'-0.2', dips 0_50. Scattered brittle siltstones to 0.05'. Dark I?ray with medium gray siltstones. Max. core length 1.2 , average 0.3' . Water level not determined 0-20.0' SANDSTONE: hardness 6" fine to medilE grain, sugary porous siliceousd mmderately to sligntly weathe;ed cro~sbedded 30 -45io, beds 0.7'-2.5' thick, carbonace~us'coating and sli~>htly limonite-stained along open bedding planes, top 5.0 slightly limy, slightly vuggy (1/8") throughout, shal.e.:~nse 0:1' t~ick at 18.9' light to rusty gray; few opem ]o'J..nts d1p 55 , one open joint limonite-stained 0/10"') and limy at 19.5', fractured and broken 4.5'-7.5', Max. cmre length 1.4' average 0.8' . 20.0'-70.7' SANDSTONE: Hardnesls 7, fine to mediUIlogr~in, sugary Dorous siliceous, frresh, crossbedded 40-55 , beds 1: 5' -5.6 I' thick, bedding~ planes open and lightfY , coated with carbon, vuggy and I limonite'.stained 55.7 -62.7 pencil line banding of carboni paralleling beddin~ planes 47'-70', shaly l...inae (<1,/4") at 60.5', 60.6 , and 70.71, light to bu!f g~ay', more rusty where vuggy; few open joints dip 50 -60 , :few steep angle~ but +rregular fractures hairline to open b)'roken from 34.3 -35.5 . Max. core' length; 5.6', avera/ge 1.7'. 70.7'-77.7' SANDSTONE: Hardnesls 6-7, fine to medilDIl grain, sugary very porous, siliceoUls, moderately weathered, crossb~dded 400 _50'" beds 1.3 1_3.5' thick, carbonaceous nodules (:!l/4f1) and' coatings ,along bedding planes, vuggy (..1/8") Br'ld limonite-stained 1throughout, pyrite vein1et (..1/2") at "'7.2', few carlKln :laminae wavy and broken J4.9'-76.0', buff graYj bott!oDIl 0.7' fractured and broken. Max. core length: 3.5, avercage 1.6 . Wo1er le....el not determined. 01"'\ q~0 \ ..~"" ~\\ A1A ",'0 ~\>\o \ \ \ \ \ \ \ \ \ \ ""~ \ \\ ...0 \ \O~~~_6e ~ 0-9.5' SANDSTONE: Hardness 6, fine to medium grain, sl.'gary, porous, siliceous, weathered, some crossbedding, bedding indistinct (0.41-1.4' thick), carbonaceous coating and vuggy (1/411) along open bedding planes, buff; slight limonite-stains throughout, few steep angled fractures limonite-stained, several vuggy areas Some filled with carbonaceous material. Max. core length: 1. 2', average 0.3'. 9.5'-72.2' SANDSTONE: Hardness 7, fine to medium grajn s1J~ary, porous',siliceous, fresh, crossbedding 450 to 60 , beds 0.6'-3.7' thick, carbonaceous-coating along open bedding planes. Vuggy 9.5'-15.0' and 52.0'-54.51, light buff; 45.5'-48.0' brown; several joints limonite- coated dip 50", some healed irregular fractures. One inch black fissile shale bed 15.9'-16.0'. Max. core length 3.2', average 1.2', 72.2'-94.8' SANDSTONE: Hardness 7, fine-grained, slightly sugary, porous, siliceous, fresh, crossbedded 400-550, vuggy 60.0'-65.0', beds 0.3'-3.2' thick, carbonaceous- coating and laminae along open bedding planes, buff; limonite-staining 88.9'-94.81, several tight irregular fractures. Max. core length: 2.1', average 1.2'. 94.8'-105.0' SHALE: Hardness 5, silty, fissile zones, beds 0.1'-0.5' thick, dip 40_6 normal to core axis. Interbedded siltstone in upper 3.0', siltstone light gray, shale dark gray to black. Lower part air-slakes and water slakes in 12 minutes. Max. core length: 0.5', average 0.2'. PROJ DH 103 EI.4778.8 o'~ 5d...J 95'H 13,9'8 II [I 31/1 WL n ~~1~3~96~.'t'::1 4..'U "..1---1 Ij 61,2'~ 67.I'M I (I I I II 91.8'H II I05,"W tJ 113.i'H 120'U 2-17-66 ~ 7720 109 0-5.1' SANDSTONE: Hard, fine-grained, cemented, nonca lcareous, Non to slightly fractured. Beds dip at 0-5". Many thin (-1/16") interbedded gray to black carbonaceous shale beds. At 1.2' there is a 1" x 1/4" liminote stained solution cavity. Core breaks along shale bedding planes. Color: Rusty brown (oxidized iron staining-limonite). Mod. 5.l\'~~~~~' SANDY SHALE: Hard, noncalcareous, non to slightly fractured. Poorly developed bedding planes. A few gypsum crystals on bedding planes. Some iron staining and carbonaceous material on fractures. Core can be broken along bedding planes with moderate hand pressure. Color: Tan to rusty brown. 8.5'-9.5' is a gray black carbonaceous shale; 9'-9.3' is weathered to clay. 9.5'-13.9' SHALE: Gray to black carbonaceous shale. Non- calcareous. Beds dip at 0-5" 13.3'-13.9' gypsum crystals on bedding planes. 9.5' -10.7 I very soft; high 1y wea the red to clay. 10.7'-11.3' soft; highly weathered to clay 11.3'-12.7' firm; moderately to highly weathered. 12.7'-13.9' hard; slightly weathered 13.9'-31.8' SANDSTONE: Hard to very hard, noncalcareous; fine-to medium- gra ined, sligh t ly frac tured down middle of core. Beds dip at 10"-15". Core is streaked with very thin carbonaceous seams along bedding planes. Many small solution cavities have formed in the carbonaceous seams. Color: Grayish white. Maximum core length is 1.5'. Average core length is .7'. Mod. porous. 31.8'-46.8' SANDSTONE: 31.8'-36.8' fine-and medium-grained. Well cemented. 36.8'-46.8' fine grained, cemented. Sugary, non- calcareous, slightly fractured at a 300 angle w.core. Beds dip at: 20". Slight carbonaceous material along some bedding planes and some fractures perpendicular to the core. White. Maximum core length is 2.41. Average length isO.9'. Mod. porous. 46.8'-51.6' SANDSTONE: hard, fine-grained, cemented, sugary. Slightly fractured. Beds dip at 10". Heavy black carbonaceous material on some bedding planes. White with black streaks. Noncalcareous. Maximum core length 1.5', average length is Q. 4', Mod. porous. 51.6'-61.2' SANDSTONE: hard, fine"and medium-grained, noncalcareous, cemented, s~gary, Non to slightly fractured. Beds dip at 10 -20", grayish white. 57.8'-58.0' many thin interbedded black carbonaceous beds. Maximum core length is 3'. Average isO.8'. At 57.1 I there are solution cavities in a thin carbonaceous bed. Mod. porous. 61.2'-67.1' SANDSTONE: hard, fine-to medium-grained, non- calcareous, cemented, sugary. Non to slightly fractured. Beds dip at 10"-15". Limonite alteration, orangish brown. 65.8'-66.0' some carbonaceous streaks. Maximum core length is 1.1', average is 0.8'. Mod. porous. 67.1'-91.8' SANDSTONE: hard, fine-to medium-grained, non- calcareous, cemented, sugary. Non to slightly fractured. Beds dil,' at 15'-20-. Slightly crosshedded. 67.1 -84.3' numerous streaks of interbedded bLackl carbonaceous beds. A few at 89.1'-90.1'. 82.3- 84.3' vuggyappearance. (small solution cavities) Maximum core length is 2.3', average is 0.6', grayish white. Mod, porous. 91.8'-105.1' SANDSTONE: Hard, [1ne-to medium-grained, non- calcareous, cemented, sugary, Non to slightly fractured. Beds dip at lQ"-15"'. Slightly crossbedded. A few carbonaceous streaks in hedding. About 3 _1" hard gray shale beds. Core is grayish white. Maximum core length is 1.1'. Average length isO.6LO.7' Mod. porous. 105. l' -113.1' SANDSTONE AND SHALE: 107.0'-109.5' is sandstone, the other portions of core are interbedded shale and sandstone 2 -4" thick- nesses. Sandstone is hard, noncalcareous, grayish white, fine-grained, cemented. Shale in noncalcar- eous, hard, gray. Bedding splits into l/~" be~s with hand pressure. Maximum core length 18 .8 . Average isO.2'0.3'. Beds dip at 5'_100 slightly crossbedded. Mod. porous, 113.1'-120.0' SHALE: Hard. gray to black, very slightly calcareous. Very slight gypsum coatings on some bedding planes. Slightly fissile. Brea~s into a~prox. 1/4" beds with hand pressure. Beds d1p at 0-5. Nonweathered. Maximum core length is 0.5'. Average is 0.2' 0.3' . NOTE Water level elev 4740.7 Januory, 1970 NOTE For expl anotlen and notes. see Dwg 382-0-802 ~ ALWAYS nunK SAfeTY UNITED STATES DEPARTMENT OF THE INTERIOR BUREAU OF RECLAMATION FRYINGPAN -ARKANSAS PROJECT-COLORADO PUEBLO DAM LOGS OF EXPLORA TlON SECTION A-A L,,-s: t'J._RY',- _SUBMITTED d~~;:~lf TRACED___'! ~._Mc..._ _ ~_ RECOMMENDEDsfR.~~_.. :-=-_. CHECKEJp_~f?-,- __ =-~:.. _ APPROVED_ _ 0~_~ ~~______ .cr. C....II!:,.- CN..."a, al!:oi..8'a-y "IV'SION DENVER. COLORADO, ..;ANUAR'f' 20,191'0 SHEET 2 Or 6 382-0-803