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1100318 R0T0 0811 JRW1 24 <br />and G-G' (hachured pattern). Material that was displaced and came to rest above the former <br />ground surface is shown in red color on the cited cross sections. As a result of the continuing <br />episodes of Pikeview Landslide movement, scarps and fissures have further opened on the upper <br />portions of the quarry slope south and east of the initial movements since December 2, 2008. <br />The features present as of the time of our field mapping in Spring 2011 are shown on the <br />geologic map (Appendix 39). <br />5.2.1.3 Bedrock Structure and Discontinuities <br />The bedrock units exposed in the Pikeview Quarry experienced tectonic folding, fracturing and <br />faulting during displacement on the Rampart Range Fault, primarily associated with the <br />Laramide Orogeny. The quarry is situated in a fault-bounded block related to the Rampart <br />Range Fault. Both the Rampart Range Fault and the unnamed subparallel fault that is located on <br />the east side of the quarry exhibit west-side-up relative motion. The structural throw on the <br />Rampart Range Fault is estimated to be approximately 4,300 feet.51 <br />While the majority of the tectonic activity was concentrated on the bounding faults, the <br />intervening sedimentary units sandwiched in the Rampart Range Fault Zone were tilted to the <br />east (and to a much milder extent, to the north) by the combined activity of the two faults. <br />Furthermore, the predominantly easterly dip of the bedding in the quarry generally increases <br />from east to west across the quarry. The dip of the bedding generally increases from about 20 to <br />25 degrees on the floor of Area H, to 30 to 45 degrees in the middle and upper slope areas, <br />ranging up to 90 degrees in the immediate vicinity of the Rampart Range Fault. These <br />relationships are shown on geologic cross sections A-A' through G-G' (Appendix 39). <br />Local areas of folding are also present in the southerly portion of Area H, likely related to drag <br />folding on the unnamed fault that bounds the eastern side of the Fault Zone and possibly to <br />minor faulting mapped near the southerly end of Area H as well (see description below). Down <br />to the east drag folding beneath Area H is shown on cross sections B-B' through E-E' <br /> <br />51 Morgan, M.L., Siddoway, C.S., Rowley, P.D., Temple, J., Keller, J.W., Archuleta, B.H., and Himmelreich, Jr., <br />J.W., 2003, Geologic Map of the Cascade Quadrangle, El Paso County, Colorado, Colorado Geological Survey <br />Open-File Report 03-18, Denver, CO, 1:24,000-scale (Appendix 37)