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<br />Table ll. Coal reserves in the Upper Colorado Basin by county (millions of tons) . <br />W WRSA <br />N County Underground Strip <br />W <br />N Li ncol n 556 1000 <br /> Sweetwater 3625 1116 <br /> Subtotal iLlll .?!J1. <br /> 2 Moffat 2571 270 <br /> Routt 3414 413 <br /> Rio Blanco 1067 0 <br /> Subtotal 2 7052 683 <br /> 3 Ca rbo n 767 <br /> Emery 72 10 <br /> Uintah 40 <br /> Subtota I 3 879 " 10 <br /> 4 Delta 205 <br /> Gunnison 248 <br /> Subtotal 4 453 <br /> - <br /> 5 Garfield (c) 552.99 <br /> r~esa 229 <br /> Pitkin 88.6 <br /> Subtota 1 5 -870.59 <br /> 6 Grand <br /> Montrose 806 60 <br /> Subtota 1 6 806 6IT <br /> 7 La Plata 322 <br /> Archuleta 66 <br /> San Juall \NM) 442 2008 <br /> Subtota 1 7 830 2008 <br /> 8 Garfield 57 24 <br /> Wayne 23 18 <br /> Kane 1715 200 <br /> Subtotal 8 179~ 242 <br /> Source: Bureau of Mi nes (1976a) , Information Circular 8693. <br /> <br /> <br />Paleozoic, Mesozoic, and Cenozoic systems. <br />Escimated ultimate recoverable reserVes <br />are in excess of 3.5 billion barrels of oil <br />and 6.5 trillion cubic-feet of gas (Sanborn <br />1971). Prospects for development of substan- <br />tial new reserves are excellent. The greater <br />Altamont-Bluebell and Roosevelt Fields in <br />Duchesne and Uiotah Counties in Utah, and the <br />Greater Red Wash Field in Uintah County, Utah <br />are the major oil and gas fields in the <br />Uinta Basin. The Greater Altamont-Bluebell <br />Field 'presently represents the largest <br />producing field in Utah (State of Utah 1976). <br />Raogely oil field and Douglas gas field, <br />located between the two bas ins, and Piceance <br />Creek gas field are the important fields in <br />Rio Blanco County, Colorado. The Rangely <br />field possesses the largest oil reserve <br />base, accounting for 55 percent of Colorado's <br />total output. <br /> <br />Paradox and San Juan Basins <br /> <br />The Paradox and San Juan Basins are in <br />the Paradox region which covers the area from <br />the San Juan Mountains of Southwestern <br />Colorado to the Canyonlands of Southeastern <br />Utah and the San Rafael Swell in Central <br />Utah. These two Breas have good potential <br />for future oil and gas production from <br />Paleozoic rocks. The Paradox region has a <br />cumulative production of approximately 413 <br />million barrels of oil and 5,265 billion <br />cubic feet of gas (Schneider et al. 1971). <br />The Paradox Basin of Southeastern Utah <br />contains sediments up to about 24,000 feet in <br />thickness, but only rocks of. Pennsylvanian <br />age have been widely tested. Aneth, Ismay- <br />Flodine Park, and Lisbon are major producing <br />fields in San Juan County of Utah. Most of <br />the oil and gas that have been produced in <br /> <br />34 <br />