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Geologic Description for Drill Hole 873E
<br /> Nucla dine, Montrose County, Colorado
<br /> Hole Number: 873E Associated dells: G'n'-N23('W i0023)
<br /> Date Drilled: 4/20/86 Location: T47N,R16w, NE4',NE4
<br /> Drilled By: Alan Chiles Section 36
<br /> Logged By: Gary Wendt Coordinates: 604,735' N
<br /> 1,117,074' E
<br /> Elevation: 5745'
<br /> Depth Increment Description of Strata
<br /> (feet)
<br /> 0.0- 1.0 SANDSTONE, brown to light grayish brown, slightly
<br /> hard to hard, VE
<br /> 1.0- 2.0 SHALE, gray, slightly hard, 5-10 percent light
<br /> grayish brown sandstone, VE/ME
<br /> 2.0- 3.0 SHALE, gray to dark gray, slightly hard, NE
<br /> 3.0- 4.0 SHALE, dark gray, slightly hard, NE
<br /> 4.0- 5.0 SHALE, very dark gray to black, carbonaceous and
<br /> soft black COAL, encountered coal at 4.6 feet, NE
<br /> 5.0- 6.8 COAL, Upper Dakota seam
<br /> 6.8- 8.0 SHALE, gray, slightly hard, light gray slightly hard
<br /> sandstone at 7.5-8.0, NE
<br /> 8.0-10.0 SANDSTONE, light brownish gray, slightly hard to
<br /> hard, NE
<br /> 10.0-13.0 SANDSTONE, brown, hard to very hard, encountered
<br /> dark gray slightly hard shale at 12.9, NE
<br /> 13.0-14.3 SHALE, gray, slightly hard to hard, NE
<br /> 14.3-14.6 SHALE , silty, yellowish brown to reddish brown,
<br /> slightly hard to hard, highly fractured from
<br /> 14.5-14.6, NE
<br /> 14.6-16.0 SHALE, gray, slightly hard to hard, yellow 0.01 foot
<br /> powdery sulfur deposits (Jarosite) in fractures at
<br /> 0.1 foot intervals, slightly sandy and light gray at
<br /> 15.8-16.0, white to clear gypsum crystals at
<br /> 15.95-16.00, NE
<br /> 6-1-50
<br /> Revised 11/01/86
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