Geology and ground-water resources of the lower Lodgepole Creek drainage basin, Nebraska, with a section on chemical quality of the water

Abstract

_____ ______________________________ Introduction. _______________________________________________ 2 Purpose and scope of the investigation.____________________ 2 Location and extent of the area_________________________________ 3 Previous investigations. ________ _______________________________ 4 Methods of investigation______________________________________ 4 Well-numbering system________________________________________ 5 Acknowledgments.-__________________________________________ 5 Geography.. _ _____________________________ 6 Topography and drainage______________________________________ 6 Climate._____________________________________________________ 7 Population, agriculture, and industry________________________.___ 9 Geology_______________________________________ 9 Summary of stratigraphy_____________________________-_______ Summary of geologic history____________________________________ Paleozoic and Mesozoic eras__._____________________________ Cenozoic era_____________________________________________ Tertiary period______________________________________ Quaternary period___________________________...______ Geologic formations and their water-bearing properties.____________ Brule formation___________________________________________ Ogallala formation_________________________________________ Alluvium.______________________________________________ Ground water_________________________________________________ The water table.

Geologic and hydrogeologic characteristics of the White River Formation, Lance Formation, and Fox Hills Sandstone, northern greater Denver Basin, southeastern Laramie County, Wyoming

“…In northeastern Colorado, the White River Formation strata have been identified differently, including the White River Formation composed of as many as three members (Galbreath, 1953; these members are no longer recognized in most studies), the Brule Formation of the White River Group (surficial exposures), or the White River Formation or Group (for example, Bjorklund, 1957b;Braddock and Cole, 1978;Scott, 1978Scott, , 1982Tweto, 1979). Older studies identified the exposed upper White River Formation strata in Nebraska contiguous with the strata of the eastern Pine Bluffs lowland area as the Brule Formation of the White River Group (for example, Lugn, 1939;Bjorklund, 1957a;Weist, 1965). More recent mapping by Swinehart and others (1985) and Swinehart and Diffendal (1997) continued to identify the White River Formation strata along the Wyoming-Nebraska border as the White River Group, and the exposed White River Formation strata along Lodgepole Creek in Nebraska that are contiguous with strata in Wyoming were identified as the Brule Formation.…”