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Colorado Division of Mining Reclamation and Safety August 22, 2014
<br />Eric Scott 3 1400159
<br />Summary
<br />Based on available information within the literature, the presence of barium within the Niobrara Formation
<br />has been documented near the Boettcher Quarry. In addition, elevated barium concentrations naturally
<br />occur in Niobrara groundwater in the region. For example, an average barium concentration of 18.2 mg /L
<br />was noted for produced water from the Niobrara and Codell units within the Wattenberg Field in Colorado.
<br />References
<br />Arthur, Michael A., Walter E. Dean, Richard M. Pollastro, George E. Claypool, and Peter A. Scholle 1985.
<br />Comparative geochemical and mineralogical studies of two cyclic transgressive pelagic limestone
<br />units, Cretaceous Western Interior Basin, U.S., in Fine - Grained Deposits and Biofacies of the
<br />Cretaceous Western Interior Seaway: Evidence of Cyclic Sedimentary Processes (FG 4). Tulsa, OK:
<br />The Society of Economic Paleontologists and Mineralogists (SEPM), p. 16 -27.
<br />Caraway, Donna C. 1990. Depositional system, facies relations, and reservoir characteristics of Codell
<br />Sandstone, Colorado. (M.S. Thesis — Department of Earth Resources). Fort Collins, CO: Colorado
<br />State University.
<br />Dean, W.E. and Arthur, M.A. 1998. Geochemical expressions of cyclicity in cretaceous pelagic limestone
<br />sequences: Niobrara Formation, Western Interior Seaway, in Stratigraphy and Paleoenvironments of
<br />the Cretaceous Western Interior Seaway, USA: SEPM Concepts in Sedimentology and Paleontology
<br />No. 6. Tulsa, OK: The Society of Economic Paleontologists and Mineralogists (SEPM), p. 227 -255.
<br />Johnson, J. Harlan. 1930. Unconformity in Colorado Group in eastern Colorado. AAPG Bulletin 14(6):
<br />789 -794.
<br />Kulp, Thomas R. and Lisa M. Pratt. 2004. Speciation and weathering of selenium in Upper Cretaceous
<br />chalk and shale from South Dakota and Wyoming, USA. Geocimica et Cosmochimica Acta 68(18):
<br />3687 -3701.
<br />Landis, E.R. 1959. Radioactivity and uranium content, Sharon Springs Member of the Pierre Shale,
<br />Kansas and Colorado, in Geological Survey Belletin 1046 -L: Contributions to the Geology of Uranium.
<br />Washington, D.C.: U.S. Government Printing Office, U.S. Geological Survey, p. 299 -319.
<br />Li, Huishu. 2013. Produced water quality characterization and prediction for Wattenberg Field. (M.S.
<br />Thesis — Department of Civil and Environmental Engineering). Fort Collins, CO: Colorado State
<br />University.
<br />Pearl, Richard Howard. 1974. Special Publication 4: Geology of Groundwater Resources in Colorado —
<br />An Introduction. Denver, CO: Colorado Geological Society, Colorado Department of Natural
<br />Resources.
<br />Surdam, R.C. 2010. Green River Basin Water Plan II, Groundwater Study, Level I. Laramie, WY:
<br />Wyoming State Geological Survey.
<br />Tourtelot, Harry A. and W.A. Cobban. 1968. Stratigraphic significance and petrology of phosphate
<br />nodules at base of Niobrara Formation, East Flank of Black Hills, South Dakota: Geological Survey
<br />Professional Paper 594 -L. Washington, DC: U.S. Government Printing Office, U.S. Geological
<br />Survey.
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