Laserfiche WebLink
- 5 - <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />There is also enough evidence from the mining activity in <br />the lower seams (Bear's Mine) and from other sources that <br />the lower bench is not a landslide feature either. <br />The slope between the valley bottom and the first bench <br />is a steep slope with frequent and distinct outcrops of a <br />continuous sandstone ledge. The slope between the lower and <br />the upper bench is a flatter slope, with few bedrock out- <br />crops. This slope comprises, according to the interpret- <br />ations by the International Engineering Company, Inc. and <br />GEO-HYDRO Consulting, Inc., the most unstable area,as will be <br />discussed later. <br />The slopes above the upper bench are fairly steep <br />slopes which extend to the distinct mountain ridge at the <br />elevation of approximately 7,700 to 7,800 feet. <br />2.2 GEOLOGY <br />The geology of the area has been described in detail <br />in the reports by Woodward-Clyde Consultants (1978), Inter- <br />national Engineering Company, Inc. (1976), and GEO-HYDRO <br />Consulting, Inc. (1980). Only a brief description of the <br />geologic conditions will be made in this report. <br />The project area is located within the eastern part <br />of the Colorado Plateau Geologic Province near its boundary <br />with the Southern Rocky Mountain Province. All bedrock for- <br />mations at the site belong to the Cretaceous Age Mesa- <br />verde Formation which is usually subdivided into four <br />members: the Basal Rawlins sandstone member, the lower coal <br />member, the upper coal member, and the barren member. For <br />the purpose of our report, only two members are of import- <br />eEaNroRO co~.w~mw, iNC. <br />