The Hiawatha and West Hiawatha gas fields, located in Vermilion Creek basin and on the state line between southwest Wyoming and northwest Colorado, are of commercial importance as the field terminus of the gas pipe-line system supplying Salt Lake City and adjacent towns with natural gas.
Gas production is from highly lenticular sandstones in the lower Wasatch formation of Eocene age. Porosities are variable.
Gas accumulation is controlled by domes superimposed on a major line of anticlinal folding. Since these are the first Tertiary (Eocene) gas-producing fields of major commercial importance in the Rocky Mountain province, geologic conditions are of special interest.