Borehole gravity meter survey in drill hole USW G-4, Yucca Mountain Area, Nye County, Nevada

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Description

Drill hole USW G-4 was logged with the US Geological Survey borehole gravity meter (BHGM) BH-6 as part of a detailed study of the lithostratigraphic units penetrated by this hole. Because the BHGM measures a larger volume of rock than the conventional gamma-gamma density tool, it provides an independent and more accurate measurement of the in situ average bulk density of thick lithologic units. USW G-4 is an especially important hole because of its proximity to the proposed exploratory shaft at Yucca Mountain. The BHGM data were reduced to interval densities using a free-air gradient (F) of 0.3083 mGal./m (0.09397 ... continued below

Physical Description

Medium: P; Size: 23 p.

Creation Information

Healey, D.L.; Clutsom, F.G. & Glover, D.A. December 31, 1986.

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Description

Drill hole USW G-4 was logged with the US Geological Survey borehole gravity meter (BHGM) BH-6 as part of a detailed study of the lithostratigraphic units penetrated by this hole. Because the BHGM measures a larger volume of rock than the conventional gamma-gamma density tool, it provides an independent and more accurate measurement of the in situ average bulk density of thick lithologic units. USW G-4 is an especially important hole because of its proximity to the proposed exploratory shaft at Yucca Mountain. The BHGM data were reduced to interval densities using a free-air gradient (F) of 0.3083 mGal./m (0.09397 mGal/ft) measured at the drill site. The interval densities were further improved by employing an instrument correction factor of 1.00226. This factor was determined from measurements obtained by taking gravity meter BH-6 over the Charleston Peak calibration loop. The interval density data reported herein, should be helpful for planning the construction of the proposed shaft.

Physical Description

Medium: P; Size: 23 p.

Notes

US Geological Survey, Box 25425 Federal Center, Denver, CO 80225; OSTI as TI87001783

Source

  • Other Information: PBD: 1986

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  • Other: TI87001783
  • Report No.: USGS-OFR--86-205
  • Grant Number: AI08-78ET44802
  • DOI: 10.2172/60072 | External Link
  • Office of Scientific & Technical Information Report Number: 60072
  • Archival Resource Key: ark:/67531/metadc699072

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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.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • December 31, 1986

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

Description Last Updated

  • April 18, 2016, 6:27 p.m.

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Healey, D.L.; Clutsom, F.G. & Glover, D.A. Borehole gravity meter survey in drill hole USW G-4, Yucca Mountain Area, Nye County, Nevada, report, December 31, 1986; Denver, Colorado. (digital.library.unt.edu/ark:/67531/metadc699072/: accessed October 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.