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James K. Otton Robert A. Zielinski Bruce Smith Marvin M. Abbott

Geologic controls on movement of surface and subsurface brine at the OSPER “A” site, Skiatook Lake, Osage County, Oklahoma. James K. Otton Robert A. Zielinski Bruce Smith Marvin M. Abbott. Geological Society of America Salt Lake City, October 16, 2005. AA02. Conclusions.

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James K. Otton Robert A. Zielinski Bruce Smith Marvin M. Abbott

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  1. Geologic controls on movement of surface and subsurface brineat the OSPER “A” site, Skiatook Lake, Osage County, Oklahoma James K. Otton Robert A. Zielinski Bruce Smith Marvin M. Abbott Geological Society of America Salt Lake City, October 16, 2005

  2. AA02

  3. Conclusions • The two pits are the principal sources of PW releases at the A site, although other sources contributed. • Initially PW releases probably moved downslope following original topography and channels filled with permeable colluvium. • PW also moved into the shallow weathered sandstone and moved downslope to the north and downdip to the west. • Shales served as aquitards for PW movement but became salt saturated themselves with time. • The shales have retained substantial amounts of salt.

  4. Conclusions (continued) • Movement through the bedrock was controlled by the position of relatively permeable weathered sandstones and the gently northwesterly dip on the section. • Fractures through less permeable shales and the density of the brine permitted downward movement of brine as it migrated from the pits to the northwest. • The extent of brine contamination of the bedrock is open to the north and northwest.

  5. Thank you

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