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PERMFILE115234
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PERMFILE115234
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Entry Properties
Last modified
8/24/2016 10:11:17 PM
Creation date
11/25/2007 12:38:59 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980001
IBM Index Class Name
Permit File
Doc Date
12/11/2001
Section_Exhibit Name
2.2 CHARACTERIZATION OF SUBSURFACE GEOLOGY
Media Type
D
Archive
No
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The Wolfcreek interburden and strata below the Wolfcreek coals are o series of <br />_ interbedded sandstones and shales. Ripple marks and bioturbation of the sandstones <br /> indicate a shallow water, high energy environment. Drill hole 05-01-0002 intersected <br /> four Wolfcreek coals with a cumulative thickness of approximately 13.5 feet. One <br /> of These coals (1.5 feet thick) is not laterally persistent and is missing in some holes <br /> drilled in the vicinity by PBM. The Wolfcreek coals crop ouf north of the cross <br /> section in Section 19 as shown on Exibit 2.1-2 where the upper Wolfcreek coal is used <br /> os a mapping unit. The interval between the Wolfcreek and Wadge coals consists of <br /> interbedded sandstones and shales with sandstone dominant immediately below the <br /> Wadge and shale dominant throughout the remainder of the interval. This shaly <br /> section is exposed at the surface to the north and south of drill hole 05-01-0002 and <br /> represents a period of deeper water and lower energy. <br /> The Wadge coal crops out between drill holes 05-01-0002 and 05-01-0004 <br /> (Exhibit 2.1-2) and is continuous southward along the cross section where it averages <br /> 5 to 6 feet in thickness. The Lennox coal occurs 35 to 40 feet above the Wadge. <br /> The interval between these coals is characteristically sandstone with interbedded <br /> lenticular shales and thin coal seams. One such cool is located 10 to 20 feet <br /> stratigraphically above the Wadge and apparently persists across the Moffat area. <br />• We hove designated this coal as the Wadge Rider coal. Due to the thin, lenticular <br /> nature and poor exposure of the Wadge Rider coal, it was not mapped on Exibit 2.1- <br /> 2. It is, however, noteworthy owing to its value for predicting Wadge core points. <br /> The stratigraphic section above the Lennox coal consists of interbedded sandstones <br /> and shales with a predominance of sandstone. <br /> The structure shown on cross section A-A' is a broad, synclinal fold with dips <br /> flattening to the north. This configuration reflects the plunge of the Twentymile <br /> Park Syncline and is, in part, due to the oblique line of cross section relative to the <br /> strike of the bedding. Two inferred faults are shown on the cross section. One fault <br /> is shown between drill holes 05-01-0002 and 05-01-0004, lts location is based on drill <br /> data acquired by P8M Engineering. The same fault intersects cross section B-B' <br /> where it has approximately 25 feet of throw. A second fault is located between drill <br /> holes 05-01-0004 and 05-01-0009 and has approximately 5 feet of throw. <br />Cross Section B-B' <br />Cross section B-B' is shown in Exhibit 2.2-2. The line of cross section is shown <br />in Exhibit 2.1-I where it can be seen that B-B' is another north-south cross section <br />(i.e., subparallel to cross section A-A') located 1,000 to 1,500 feet east of cross <br />2.2-2 <br />
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