Processing and geologic analysis of conventional cores from well ER-20-6 No. 1, Nevada Test Site

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In 1996, Well Cluster ER-20-6 was drilled on Pahute Mesa in Area 20, in the northwestern corner of the Nevada Test Site (NTS). The three wells of the cluster are located from 166 to 296 meters (m) (544 to 971 feet [ft]) southwest of the site of the underground nuclear test code-named BULLION, conducted in 1990 in Emplacement Hole U-20bd. The well cluster was planned to be the site of a forced-gradient experiment designed to investigate radionuclide transport in groundwater. To obtain additional information on the occurrence of radionuclides, nature of fractures, and lithology, a portion of Well ER-20-6 No. ... continued below

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56 p.

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Prothro, L.B., Townsend, M.J. & Drellack, S.L. Jr. September 1, 1997.

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Description

In 1996, Well Cluster ER-20-6 was drilled on Pahute Mesa in Area 20, in the northwestern corner of the Nevada Test Site (NTS). The three wells of the cluster are located from 166 to 296 meters (m) (544 to 971 feet [ft]) southwest of the site of the underground nuclear test code-named BULLION, conducted in 1990 in Emplacement Hole U-20bd. The well cluster was planned to be the site of a forced-gradient experiment designed to investigate radionuclide transport in groundwater. To obtain additional information on the occurrence of radionuclides, nature of fractures, and lithology, a portion of Well ER-20-6 No. 1, the hole closest to the explosion cavity, was cored for later analysis. Bechtel Nevada (BN) geologists originally prepared the geologic interpretation of the Well Cluster ER-20-6 site and documented the geology of each well in the cluster. However, the cores from Well ER-20-6 No. 1 were not accessible at the time of that work. As the forced-gradient experiment and other radio nuclide migration studies associated with the well cluster progressed, it was deemed appropriate to open the cores, describe the geology, and re-package the core for long-term air-tight storage. This report documents and describes the processing, geologic analysis, and preservation of the conventional cores from Well ER20-6 No. 1.

Physical Description

56 p.

Notes

INIS; OSTI as DE98052966

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  • Other Information: PBD: Sep 1997

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  • Other: DE98052966
  • Report No.: DOE/NV/11718--162
  • Grant Number: AC08-96NV11718
  • DOI: 10.2172/623024 | External Link
  • Office of Scientific & Technical Information Report Number: 623024
  • Archival Resource Key: ark:/67531/metadc697832

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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Creation Date

  • September 1, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • Nov. 24, 2015, 7:59 p.m.

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Prothro, L.B., Townsend, M.J. & Drellack, S.L. Jr. Processing and geologic analysis of conventional cores from well ER-20-6 No. 1, Nevada Test Site, report, September 1, 1997; United States. (digital.library.unt.edu/ark:/67531/metadc697832/: accessed June 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.