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RECEiN /ED FIGURE MAR 06198* OBSERVATION HOLE 80 -04 (V 7, Div., USGq HYDROLOGY PROGRAM Leonard Rice Consulting Water Engineers, Inc. OBSERVATION HOLE CONSTRUCTION 9; 9 9 9 9 I G -0 , „ P G NORTHERN COAL COMPAN` MEEKER a RIO BLANCO COUNTIES, COLORADO SEC 27, TWP 2N, RNG. 93W OCTOBER, 1980 GEOPHYSICAL LOGS o GEOLOGY LOG PTH AUSTEDI a ° CD M r C") CALIPER (inches) m� M D w r ID o° m -•�' N G.L rn �;*J1, Alluvi� J — Claystone, oxidized stringers sandy zone 1 — — I Shale, sandy, calcareous GAMMA BULK RAY DENSITY (Sgu) ( 9 /cm3 ) 0 200 6000 0 G IT I I 1 i I iI I j I J - COAL 1-C PER P J-C AVEL SE RFS C TOM OF MONIT- IG ZONE DDLE 'LUG I 100 1• Sandstone, friable, slightly cal- `. cerous, argelaceous at base, I — trace carbonaceous, shaley zones iShale, silty to sandy i ! Sandstone, friable, water flowing, slightly calcareous Siltstone, calcareous, argelaceous stringers P G -0 I ;RAVEL ,P G-0 )ERFS ;ASE G_ C DERrS G- COAL rTOM G -C RAVEL BASAL PLUG TD I i --1 14 I • I 200 X w Coal Siltstone, calcareous, sandy in '. Sandstone, slightly calcareous, r, +� argelaceous ... Shale, coal and carbonaceous 1 stringer, sandy, some water flow - UP2 ing t coal zone Shale, sandy • Sandstone, alightly friable and COAL UPS I —� calcareous with coal stringer and points bed Shale, sandy, slightly calcareous, Siltstone, calcareous, sandstone V 300 "�';© lenses, argelaceous in points Sandstone, calcareous P 5500 Coal L , ..... Siltstone, calcareous, sandstone Shale, slightly calcareous T San�dstone sli hhtl friable and '•'s 1• calcareoug, cofl s�ringer . r Shale, silty with sandy lenses, slightly calcareous, siltstone — o stringer a, Home t dI r"un w•,' a $ w terial, coal zone Siltstone, calcareous, sandy in '. Sandstone, calcareous r, 400 •1• — ... Siltstone, calcareous ',• {•,',' Sandstone, calcareous UP2 Coal coal zone Carbonaceous shale, sandy • Shale, coaly stringer, trace car - COAL UPS I —� bonaceous points Sandstone, calcareous Shale, sandy, slightly calcareous, Shale, sandy i carbonaceous material • Sandstone, calcareous P 5500 Coal L , ..... Siltstone, calcareous, sandstone lenses, trace carbonaceous :•�:• — Shale, sandy, carbonaceous, trace r coal Sandstone, friable, calcareous, _ _ . _ _ _ -,_ - •• • u•. argelaceous stringers Shale, silty to sandy, trace car- ! bonaceous coal stringer . I � I j Ii I -± _n I t a) f L- Shale, sandy Sandstone, calcareous Shale, sandy 1, i 900 Coal Carbonaceous shale — ' Shale, sandy in parts, carbonaceous trace coal •.. ... Sandstone, calcareous, siltstone lenses, argelaceous stringers Shale, interbedded with sandstone, — calcareous, sFiale'zone 'li • Coal, slightly shaley in lower 3 _ 1000 coot 1 OCT f TRriq ATTnN AT 1000 FEET, POOR SAMPLES BELOW Carbonaceous shale :•:5. Sandstone, calcareous I Shale, sandy Siltstone, calcareous i Shale, sandy, trace carbonaceous Sandstone, slightly calcareous, argelaceous zone CIL, 1100 Coal, slightly shaley Y I Sandstone, slightly calcareous, argelaceous zones i • Carbonaceous shale F2 Coal,lslightly carbonaceous in F� -.. parts I — Siltstone, shaley zone, sandy in parts, carbonaceous stringer Sandstone, argelaceous stringers, 1 slightly friable 1200 a Shale, carbonaceous in points, sandy stringer U D I Coal, clean Siltstone, argelaceous zone, sandy I stringers Shale, sandy trace carbonaceous � I 2 tCoal, clean D� .. .' Siltstone, calcareous, sandy strin 1300 gers — Shale, sandy in. points _. i Sandstone, calcareous Siltstone sandy argelaceous in parts Sandstone, slightly friable, car- '. bonaceous zone, carbonaceous shale -- - zone C 1400 i Coal, clean Shale, carbonaceous zone, sandy Sandstone, trace carbonaceous UB S Shale, coaly stringer Shale, carbonaceous, coal stringer 1500 y Sandstone, slightly calcareous, trace carbonaceous Shale, sandstone lenses, calcareous 1 in points, carbonaceous zones Coal, slightly shaley • Shale, slightly carbonaceous, sandy stringers �,. Siltstone, sandy, trace carbon- 1600 aceous, sandstone lenses to Siltstone, calcareous, sandy in 600 r, parts Shale, silty to sandy, with thin coal zone M S11Cston¢ cal1 areoug, sandy in points with [hcin coal zone Shale, sandy • Sandstone, calcareous Jt L Shale, sandstone lenses, thin foal lense and -oal stringers 700 an Sandstone, slightly calcareous. I shale stringers, coal zone I '1' Siltstone, sandy stringers, cal- 1 careous, shaley K R 0 Coal, clean Shale, silty to sandy, slightly calcareous, trace carbonaceous Siltstone, slightly calcareous, 800 — sandy in parts, argelaceous stringers Shale, sandy, scattered carbon- s aceous Sandstone, calcareous Coal, 3 feet shale parting a) f L- Shale, sandy Sandstone, calcareous Shale, sandy 1, i 900 Coal Carbonaceous shale — ' Shale, sandy in parts, carbonaceous trace coal •.. ... Sandstone, calcareous, siltstone lenses, argelaceous stringers Shale, interbedded with sandstone, — calcareous, sFiale'zone 'li • Coal, slightly shaley in lower 3 _ 1000 coot 1 OCT f TRriq ATTnN AT 1000 FEET, POOR SAMPLES BELOW Carbonaceous shale :•:5. Sandstone, calcareous I Shale, sandy Siltstone, calcareous i Shale, sandy, trace carbonaceous Sandstone, slightly calcareous, argelaceous zone CIL, 1100 Coal, slightly shaley Y I Sandstone, slightly calcareous, argelaceous zones i • Carbonaceous shale F2 Coal,lslightly carbonaceous in F� -.. parts I — Siltstone, shaley zone, sandy in parts, carbonaceous stringer Sandstone, argelaceous stringers, 1 slightly friable 1200 a Shale, carbonaceous in points, sandy stringer U D I Coal, clean Siltstone, argelaceous zone, sandy I stringers Shale, sandy trace carbonaceous � I 2 tCoal, clean D� .. .' Siltstone, calcareous, sandy strin 1300 gers — Shale, sandy in. points _. i Sandstone, calcareous Siltstone sandy argelaceous in parts Sandstone, slightly friable, car- '. bonaceous zone, carbonaceous shale -- - zone C 1400 i Coal, clean Shale, carbonaceous zone, sandy Sandstone, trace carbonaceous UB S Shale, coaly stringer Shale, carbonaceous, coal stringer 1500 y Sandstone, slightly calcareous, trace carbonaceous Shale, sandstone lenses, calcareous 1 in points, carbonaceous zones Coal, slightly shaley • Shale, slightly carbonaceous, sandy stringers �,. Siltstone, sandy, trace carbon- 1600 aceous, sandstone lenses to