Geological mapping of the Oak Ridge K-25 Site, Oak Ridge, Tennessee

Lemiszki, P J

doi:10.2172/585045

Title: Geological mapping of the Oak Ridge K-25 Site, Oak Ridge, Tennessee

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Abstract

The Oak Ridge K-25 Site (formerly known as the Oak Ridge Gaseous Diffusion Plant) is located in the southern Appalachian Valley and Ridge province of east Tennessee and overlies an area of folded and faulted Cambrian through Ordovician sedimentary rocks in the footwall of the Whiteoak Mountain fault. Environmental restoration plans for the area require that the geology of the site be well understood because various aspects of the groundwater system are directly influenced by stratigraphic and structural characteristics of the bedrock. This study involved mapping the bedrock geology of an 18-square mile area in and around the plant site. Field mapping focused on: (1) checking the accuracy of previously mapped stratigraphic and fault contacts, (2) dividing the bedrock into distinct stratigraphic units based on field criteria, (3) determining the geometry of map-scale folds and faults, and (4) documenting various aspects of the local fracture system. Besides accomplishing all of the above tasks, results from this study have led to a number of new hypotheses regarding various aspects of the site geology. First, faulting and folding within carbonates of the Chickamauga Supergroup in the plant area has repeated certain rock units, which requires that there be a thrust fault inmore »« less

Authors:: Lemiszki, P J

Publication Date:: Sat Jan 01 00:00:00 EST 1994

Research Org.:: Oak Ridge K-25 Site, TN (United States)

Sponsoring Org.:: USDOE Assistant Secretary for Nuclear Energy, Washington, DC (United States)

OSTI Identifier:: 585045

Report Number(s):: K/ER-111
ON: DE98004556; TRN: 98:001718

DOE Contract Number:: AC05-84OR21400

Resource Type:: Technical Report

Resource Relation:: Other Information: PBD: Jan 1994

Country of Publication:: United States

Language:: English

Subject:: 05 NUCLEAR FUELS; 54 ENVIRONMENTAL SCIENCES; 58 GEOSCIENCES; ORGDP; GEOLOGY; MAPPING; SITE CHARACTERIZATION; STRATIGRAPHY; GEOLOGIC FAULTS; TENNESSEE; REMEDIAL ACTION

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                    Lemiszki, P J. Geological mapping of the Oak Ridge K-25 Site, Oak Ridge, Tennessee.  United States: N. p., 1994. 
        Web.  doi:10.2172/585045.

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                    Lemiszki, P J. Geological mapping of the Oak Ridge K-25 Site, Oak Ridge, Tennessee.  United States.  https://doi.org/10.2172/585045

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                    Lemiszki, P J. 1994.  
        "Geological mapping of the Oak Ridge K-25 Site, Oak Ridge, Tennessee".  United States.  https://doi.org/10.2172/585045.  https://www.osti.gov/servlets/purl/585045.

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@article{osti_585045,

  title        = {Geological mapping of the Oak Ridge K-25 Site, Oak Ridge, Tennessee},

  author       = {Lemiszki, P J},

  abstractNote = {The Oak Ridge K-25 Site (formerly known as the Oak Ridge Gaseous Diffusion Plant) is located in the southern Appalachian Valley and Ridge province of east Tennessee and overlies an area of folded and faulted Cambrian through Ordovician sedimentary rocks in the footwall of the Whiteoak Mountain fault. Environmental restoration plans for the area require that the geology of the site be well understood because various aspects of the groundwater system are directly influenced by stratigraphic and structural characteristics of the bedrock. This study involved mapping the bedrock geology of an 18-square mile area in and around the plant site. Field mapping focused on: (1) checking the accuracy of previously mapped stratigraphic and fault contacts, (2) dividing the bedrock into distinct stratigraphic units based on field criteria, (3) determining the geometry of map-scale folds and faults, and (4) documenting various aspects of the local fracture system. Besides accomplishing all of the above tasks, results from this study have led to a number of new hypotheses regarding various aspects of the site geology. First, faulting and folding within carbonates of the Chickamauga Supergroup in the plant area has repeated certain rock units, which requires that there be a thrust fault in the subsurface below them. This thrust fault may project to the surface with the Carters Limestone. Second, thrust slices of the Rome Formation that overlie the Chickamauga carbonates may be extremely thin and have a limited aerial extent. Third, part of the Knox Group on McKinney Ridge is folded into an anticline. Evaluating the above hypotheses will require information about the subsurface that can only be acquired through drilling and surface geophysical surveys. The geologic map produced from this study can be used to evaluate the location of coreholes that will more effectively intersect a combination of stratigraphic, structural, and hydrologic targets.},

  doi          = {10.2172/585045},

  url          = {https://www.osti.gov/biblio/585045},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Sat Jan 01 00:00:00 EST 1994},

  month        = {Sat Jan 01 00:00:00 EST 1994}

}

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