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FIGURE NORTHERN COAL COMPANY
<br />R EC E I'. E D MEEKER Of RIO BLANCO
<br />OBSERVATION HOLE 80 -08 COUNTIES , COLORADO
<br />j�qR () SEC 28,TWP. 2N , RNG. 93W
<br />C!N.. U5�s HYDROLOGY PROGRAM DECEMBER, 1980
<br />OaMIMO. r'[ $` -'
<br />Leonard Rice Consulting Water Engineers, Inc.
<br />sOONCCOI-
<br />JANUARY 1981
<br />OBSERVATION GEOPHYSICAL LOGS GEOLOGY LOG
<br />HOLE (DEPTH ADJUSTED)
<br />CONSTRUCTION GAMMA BULK CORE I" CONDENSATION
<br />RAY DENSITY CALIPER �'
<br />°o
<br />(sgu) (g /cm3) (inches)
<br />W o
<br />J U P •c_ 1050 (air) 150 m is C�
<br />0 200 600(water) 0 C Il
<br />-J
<br />c�
<br />po o P11uniYUn'.and, Iaystihn, sandy
<br />�
<br />Claystan� sandy
<br />— n
<br />•i•
<br />Sandstone, calcareous
<br />Shale, silty, sandy and carbona-
<br />ceous stringers
<br />100
<br />~ Siltstone, sandy in parts
<br />1 Sandstone, calcareous, argilla-
<br />ceous in parts
<br />_ Shale, calcareous sandstone
<br />stringer
<br />TOP X 20 © Coal
<br />> < PLUG - -" ,. Shale, silty and sandy stringers,
<br />1 a carbonaceous zones. pyritic
<br />•q- Sandstone, iriabl,e, carbonaceous,
<br />V A,' benconitic shale zone, pyritic
<br />2 Coal
<br />V,
<br />Shale, silty to sandy, carbona-
<br />ceous zone
<br />Sandstone
<br />Shale, silty to sandy, tract.
<br />carbonaceous, sandstone lenses
<br />1im
<br />Sandstone
<br />T
<br />© Shale, silty to sandy, trace
<br />carbonaceous, sandstone lenses
<br />_SCALE 400 •
<br />CHANGE
<br />AIR - FOAM L
<br />INTERFACE Shale, calcareous, silty to sandy
<br />�g Sandstone, calcareous, carbona-
<br />• .j• ceous, pyritic
<br />Coal, two feet shale parting
<br />Shale, silty to sandy, carhona-
<br />TOP OF ceous, sandstone stringers
<br />490 gon�ici _ — •
<br />8 = PERFOR- � -COAL P Coal
<br />484 ATED ZONE 500
<br />BASE OF Shale, carbonaceous, pyritic,
<br />GRAVEL o siltstone and sandstone lenses
<br />Sandstone, slightly calcareous,
<br />•1 trace carbonaceous, shaley zones
<br />Sandstone
<br />Shale, silty
<br />I _ Siltstone, slightly sandy
<br />O 600 Coal
<br />_ Carbnnace,,us shale
<br />N MIDDLE Shale, silty in part
<br />PLUG Sandstone, slightly friable
<br />Shale, carbonaceous zones
<br />M Coal
<br />Carbonaceous shale
<br />Shale, silty to sandy, sandstone
<br />lenses
<br />Coal
<br />700 Shale, carbonaceous zone
<br />Sandstone
<br />UK •
<br />KR Shale, silty, sandstone stringer,
<br />coal zone
<br />Shale, silty to sandy
<br />,•.T},.•, Sandstone, calcareous, shalev
<br />K 800 No sample
<br />_ — ..
<br />i Shale, silty to sandy, calcareous
<br />TOP OF
<br />821 GRAVEL J - COAL J Coal
<br />Q 23- =PFRFOR.AT - SiLaie, silty to sandy
<br />132__ —ED ZONE
<br />833 BASE OF Sandstone, calcareous
<br />GRAVEL LJ Coal
<br />Shale
<br />Sandstone, calcareous, friable
<br />1•
<br />_ 900
<br />— Fihale, sandstone lenses, coal bed
<br />BASAL
<br />PLUG
<br />Sandstone, friable, calcareous,
<br />• " carbonaceous stringer, shale zone
<br />1
<br />1000 •••� Shale, silty to sandy, calcareous
<br />-- sandstone stringers
<br />•Sandstone, calcareous, trace
<br />,••�; carbonaceous and pyrite, shaley
<br />Shale, Shale, carbonaceous shale and
<br />coal zones
<br />Coal
<br />L Q Shale, silty and carbonaceous
<br />1085 T,D. zones, Siltstone and coal
<br />stringers
<br />1100
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