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<br /> <br />I <br /> <br />.... ..... ~.; <br /> <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />,- <br /> <br /> <br />--:'~ <br /> <br />- <br />'"""-.. <br /> <br />".J' <br /> <br />I <br /> <br />L <br />~"'~ <br />~ - ~ <br />'Y ? <br />- -- ~- <br />-~ <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />Cathedral Bluffs <br /> <br />On the north boundary of the Basin, from Meeker westward to the Colorado- <br />Utah State line is an area characterized by broad basins separated by <br />rocky ridges and narrow plateaus. Elevations are from 5,000 to about <br />8.600 feet above sea level. Bare rock surfaces are common in cliff <br />faces. along dip slopes, and in badland areas. Pedimentation has left <br />some remnants of gravel surfaces lying at relatively high leveld above <br />present drainage channels. Stream terraces occur along most major <br />valleys. <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />Geologv <br /> <br />I <br /> <br />Rocks ranging in age from Precambrian to Quaternary are exposed in the <br />White River Basin (Bedrock Geology Map. following page). Except for <br />small areas of Precambrian crystalline rocks and Tertiary lava flows <br />in the White River Plateau. they consist of a thick sequence of sedi- <br />mentary roc~s of Paleozoic. Mesozoic, and Tertiary age. Areal distri- <br />bution of these rocks is controlled by three major structural features, <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />- 8 - <br /> <br />I <br />