My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
1987-12-01_PERMIT FILE - C1981017 (207)
DRMS
>
Day Forward
>
Permit File
>
Coal
>
C1981017
>
1987-12-01_PERMIT FILE - C1981017 (207)
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
1/4/2021 3:53:30 AM
Creation date
5/24/2012 8:46:31 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981017
IBM Index Class Name
PERMIT FILE
Doc Date
12/1/1987
Doc Name
Willard Owens Associates, Inc Hydrologic Report
Section_Exhibit Name
Chapter III Appendix III-E-1
Media Type
D
Archive
No
Tags
DRMS Re-OCR
Description:
Signifies Re-OCR Process Performed
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
138
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
View images
View plain text
is considered a marker bed in the Mesaverde and has a wide <br /> extent in western Colorado (Full, 1972) . The Rollins sandstone <br /> is considered to be the base of the Mesaverde formation by some , <br /> while others considered it to be the top of the Iles formation <br /> of the Mesaverde group (Full, 1972 ; Collins , 1977) . The <br /> Rollins sandstone is the lowest potential aquifer below the <br /> economic coal seams . <br /> The Rollins sandstone is underlain by a 500 foot sequence of <br /> shale, mudstone, and siltstone (Full, 1972) . This unit is <br /> referred to as the tongue of the Mancos shale in the Iles <br /> formation or as the upper portion of the Mancos shale (Collins, <br /> 1977 ; Full, 1972) . A forty foot thick zone of sandstone under- <br /> lies this 500 foot unit and is referred to as the Cozzette <br /> Sandstone Member. If the overlying 500 foot unit is considered to <br /> be the Mancos shale, this sandstone is considered to be only a <br /> marker bed with the Mancos shale (Full , 1972) . If- the 500 foot <br /> unit is considered to be a tongue of the Mancos shale , the <br /> Cozzette sandstone is considered to be the base of the Iles <br /> formation of the Mesaverde group (Collins , 1977) . The 500 foot <br /> zone of shale, mudstone, and siltstone will serve to retard <br /> downward percolation of ground water from the Rollins sandstone <br /> to the Cozzette sandstone. <br /> The underlying Mancos shale is a massive unit of marine grey <br /> shale over 4000 feet thick in the Coal Basin area (Collins , <br /> 1977) . The Mancos shale is easily eroded and comprises the <br /> 9 <br />
The URL can be used to link to this page
Your browser does not support the video tag.