Laserfiche WebLink
<br />4207 <br /> <br />. <br /> <br />(2) Shoreline Stability <br /> <br />Portions of the side slopes around Ruedi Reservoir a.re <br />relatively steep, and the shorelines that have developed <br />inhibit some user access. However, in the vicinity of the <br />principal side drainages and the upper end of the reservoir, <br />flat shorelines suitable for recreation have developed. <br /> <br />A sand and gravel armored shoreline are present at Turquoise <br />Lake and similar conditions occur at Twin Lakes Reservoir. <br />These desirable shorelines ate the result of the reservoirs <br />being contained within sandy, unconsolida.ted surfic.ial <br />depos its. <br /> <br />Only limited pottions of Pueblo Reservoir are sandy because <br />of lack of sandy material within the reservoir. The <br />remaining shoreline is composed of fines and some rock <br />debris. <br /> <br />€. Economic Geology <br /> <br />. <br /> <br />The Ftyingpan-Arkansas Project Collection System Tunnels, the <br />Mt. Elbett Canal or Conduit, and the Mt. Elbert Forebay Dam and <br />Reservoir are all located close to the famous Colorado Mineral <br />Belt and all are located either close to, or in, one of the many <br />mining districts established as legal entities in Colorado. <br />Over 400 mining districts were established in Colorado, but only <br />a few of them ever became significant producers (Chronic and <br />Chronic, 1972). Generally, the base and precious metals mined <br />from districts near the collection system were from lodes while <br />placer deposits constituted the main source in districts near <br />the conduit and forebay. <br /> <br />o ection Systems - The North and South Side Collection Systems, <br />which include the Charles H. Boustead Tunnel, are outside of the <br />primary mineral production area known as the Colorado Mineral <br />Belt. <br /> <br />This northeasterly trending geologic feature coincides with a <br />late Cretaceous or Tertiary age silicic intrusive belt. Most <br />gold, silver, lead, zinc, and molybdenum deposits in Colorado <br />lie within this belt. Apparently copper occurs in such small <br />amounts that reports on it have not been made. In the Sawatch <br />and Mosquito Mountains, the ore deposits occur in Paleozoic <br />sedimentary rocks (Gilbert, 1972) (As illustrated in Figure 111-10). <br /> <br />. <br /> <br />1II-20 <br />