01595oam 2200397 a 450 991069671240332120080916162836.0(CKB)5470000002381752(OCoLC)231280882(EXLCZ)99547000000238175220080609d2008 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierThe Yampa Bed, a regionally extensive tonstein in the Williams Fork Formation, northwestern Piceance Creek and southern Sand Wash Basins, Colorado[electronic resource] /by Michael E. Brownfield and Edward A. JohnsonVersion 1.0.Reston, Va. :U.S. Dept. of the Interior, U.S. Geological Survey,2008.vi, 32 pages digital, PDF fileContributions to stratigraphyScientific investigations report ;2008-5033Title from PDF title screen (viewed on June 6, 2008).Includes bibliographical references (pages 30-32).TonsteinsWilliams Fork Formation (Colo. and Utah)TonsteinsBrownfield M. E1382516Johnson Edward A(Edward Allison),1940-1384115Geological Survey (U.S.)GISGISGPOBOOK9910696712403321The Yampa Bed, a regionally extensive tonstein in the Williams Fork Formation, northwestern Piceance Creek and southern Sand Wash Basins, Colorado3464748UNINA