_PERMIT FILE - C1981017 ‎(25)‎

• Permit No: C1981017
• IBM Index Class Name: PERMIT FILE
• Doc Name: Environmental Resources Information ‎(part 5)‎
• From: Mid-Continent Resources
• To: DRMS
• Section_Exhibit Name: Chapter III Volume 4
• Media Type: D
• Archive: No

thickness, and identical to the underlieing shale , occurs
within the Rollins Member 25 to 7/ 5 feet above the base . The
Rollins Sandstone varies in grain from very fine to coarse ,
but medium size predominates .
Calcareous ironstone concretions , some as
large as 20 ' or 30' Iona , occur mainly below the shale
tongue. The sandstone varies from feldspathic to lithic ,
and is cemented by calcite and silica until the top 5 ' to
20 ' , where a silica-clay matrix predominates . The silica-
clay matrix is common throughout the western Upper Cretaceous
where coal directly overlies sandstone.
Drill hole data indicate that , at times , the
coal rests directly on the sandstone . Generally , however ,
it is found interbedded with shales and siltstone up to 13 '
above the Rollins .
The coal interval consists of coal seams and
partings , which total 20' to 30 ' thickness , known as the
Coal Basin Coal Interval.
The partings , which occur erratically in the
Coal Basin Interval, consists of sandstone and siltstone
similar to the top of the Rollins . Coal intervals 25 ' to
30' thick occur where the partings are absent or very thin .
With the exception of plant debris , they are devoid of
macrofossils .
The lower portion of the Coal Basin interval
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