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<br /> <br />Geology modified from Tweto, 1979 <br /> <br />o <br />I <br />o <br /> <br />10 <br />, <br /> <br />20 <br />, <br />, <br />30 <br /> <br />, <br />40 KILOMETERS <br /> <br />30 <br />, <br /> <br />40 MILES <br />, <br /> <br />10 20 <br /> <br />Base from U.S. Geological Survey <br />State base map, 1:500,000 <br /> <br />CENOZOIC <br /> <br />TERTIARY <br /> <br />EXPlANATION <br />~ Browns Park Formation <br /> <br />~ Tertlaryvolcanlcs <br /> <br />~ Uinta Formation <br /> <br />~ -~=-~ Green River Formation <br />Wasatch Formation <br /> <br />g Mesaverde Group <br /> <br />CRETACEOUS <br /> <br />I~ml <br />- <br />- <br /> <br />Mancos Shale <br /> <br />Frontier Sandstone and Mowry Shale Members of Mancos Shale, <br />and Intervening shale zone <br /> <br />Dakota Sandstone <br /> <br />Frontier Sandstone and Mowry Shale Members of Mancos Shale, <br />Dakota Sandstone, and Morrison Formation, undifferentiated <br /> <br />Jurassic and Triassic rocks, undifferentiated <br /> <br />MESOZOIC <br /> <br />JURASSIC ~ <br />TRIASSIC ~ <br /> <br />I KJmm I <br />~ <br />~ <br />~ <br /> <br />Paleozoic and Precambrian rocks, undifferentiated <br /> <br />PALEOZOIC AND { <br />PRECAMBRIAN <br /> <br />CONTACf <br />-+- ARCH <br /> <br />Figure 2. Generalized structure and bedrock geology (modified from Tweto, 1979). <br /> <br />8 Sediment Tranaport and Water-Quality Characteristics and Loads, White River, Northwestarn,l:olorado, Water Veara <br />1975-88 <br />