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<br />1 <br />geologically while standing on them; they are best <br />understood from a high vantage point.) <br />' As noted above, the fans terminate in narrows areas in <br />Sections 13 and 14. These narrows areas obviously <br />' constricted the downstream flow of the fan materials causing <br />extensive deposition upstream. Thus, the fans on Ward Creek <br />and Cottonwood Creek backed up in Section 13 and reached <br />' such an elevation that they filled in the existing valleys <br />and coalesced. (The county road in Sections 13 and 14 <br />provides an excellent view of the mudflow fans and the level <br />third terrace above them.) The mudflow fans are undulating, <br />lobed, and generally convex while the terrace has a smooth <br />linear surface and generally follows the stream. <br />t As depicted on Map 7, the second and first terraces may <br />be clearly identified downstream from the extensive fan <br />materials along Ward Creek. These two terraces are <br />' designated Qt2 and Qtl, respectively, on Map 7. The second <br />terrace is eight (8) to 10 feet above the first terrace. The <br />' Qtl terrace is about two (2) feet above the channel. Below <br />' the fans, these terraces are formed from gravels of basalt <br />and sandstone with fine materials derived from the fan <br />' material and from shales of the Mesaverde Group and Mancos <br />Shale. <br />' As one follows the channels of Ward Creek and Williams <br />' Creek upstream into the areas covered by the mudflow fans, <br /> <br />' 79 <br />