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<br />2840 <br /> <br />Most of the rocks exposed are of Cretaceous age. The <br />. oldest formation exposed is the Navajo Sandstone of <br />Jurassic-Triassic age. Pre-Cretaceous rocks younger than <br />the Navajo are, in ascending order: the Entrada Sandstone, <br />the Summerville Formation, the Junction Creek Sandstone, <br />and the Morrison Formation. The Cretaceous rocks are: the <br /> <br />Burro Canyon Formation, the Dakota Sandstone, the Mancos <br /> <br />Shale, the Point Lookout Sandstone, the Menefee Formation, <br /> <br />. <br /> <br />the Cliff House Sandstone, the Lewis Shale, the pictured <br /> <br /> <br />Cliffs Sandstone, the Fruitland Formation, the Kirtland <br /> <br /> <br />Shale, the McDermott Formation, and the Ajo Alamo Sandstone. <br /> <br /> <br />Quaternary deposits include: alluvium and terrace, <br /> <br /> <br />pediment, and talus deposits. Laccoliths, sills, and <br /> <br /> <br />stocks of Cretaceous or Tertiary age intruded into and <br /> <br /> <br />between sedimentary rocks form the Ute Mountains. The <br /> <br /> <br />regional dip is away from the mountains. <br /> <br /> <br />There had bcen little development of water resources <br /> <br /> <br />before the early 1950's. with the establishment of the <br /> <br /> <br />Ute Mountain Indian rehabilitation program, ground-water <br /> <br /> <br />studies were started in an attcmpt to alleviate shortages <br /> <br /> <br />of domestic and stock-water supplies. <br /> <br />. <br /> <br />~ <br />