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A Technique for Delineating Subsurface Fracture Zones Resulting from High-Yield Detonations

Description: From summary: Site investigations were conducted at two locations, the sites of the DUGOUT and CHARLIE events, at the Nevada Test Site for the purpose of evaluating the dynamic in situ technique as a means of determining the boundaries of craters produced by explosive detonations.
Date: February 1967
Creator: Ballard, Robert F., Jr.
Partner: UNT Libraries Government Documents Department
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Surficial Geologic Map of Yucca Flat, Nevada Test Site

Description: "The surficial deposits of Yucca Flat, divided into eleven units, are shown at a scale of 1:48,000 (fig. 1A). Major rock types of the bordering bedrock areas are indicated, as are the lithologies of portions of the surficial units. The map explanation (fig. 1B) includes a description of the surficial units." (page 2)
Date: September 22, 1967
Creator: Fernald, Arthur T.; Corchary, George S. & Williams, William P.
Partner: UNT Libraries Government Documents Department
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Borehole Gravity Meter Observations in Drill Hole UCe-18, Hot Creek Valley, Nye County, Nevada

Description: Abstract: "Drill hole UCe-18 was successfully logged with the U.S. Geological Survey-La Coste Romberg borehole gravity meter to a depth of 6,488 feet. That density increases with depth is apparent in both the alluvium and volcanic rock. The in situ density of the alluvium measured by the gravity meter ranges from 1.77 to 2.34 gm/cc; the lake beds beneath the alluvium have a density of 2.22 gm/cc; and the rhyolitic rocks range in density from 2.26 to 2.47 gm/cc. The average density determined fr… more
Date: October 2, 1967
Creator: Healey, D. L.
Partner: UNT Libraries Government Documents Department
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Underground Effects in the U12n.02 and U12n.03 Drifts, from the Midi Mist (U12n.02) Test, Area 12, Nevada Test Site

Description: Abstract: "The Midi Mist (U12n.02) event produced rock spalling along bedding, joint, and fault planes in the U12n.02 and U12n.03 drifts. The spalling in the U12n.02 drift started at about construction station 12 + 75 and was continuous toward the W.P. Most of the spalling in the U12n.03 drift occurred between C.S. 0 + 00 and 7 + 00."
Date: August 8, 1967
Creator: Ege, John R. & Danilchik, Walter
Partner: UNT Libraries Government Documents Department
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Geophysical and Geologic Field Measurements for the U16a.04 Tunnel, Nevada Test Site, Nevada with a Discussion of Geophysical Measurements in Horizontal Holes

Description: This report summarizes the results of the U.S. Geological Survey geophysical and geological studies of the rock in the U16a.04 tunnel in the Nevada Test Site.
Date: December 19, 1967
Creator: Carroll, Roger D.; Ege, John R.; Cunningham, M. J.; Muller, D. C. & Way, R. J.
Partner: UNT Libraries Government Documents Department
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Geology and Geophysical Field Measurements for the Midi Mist Tunnel, Nevada Test Site, Nevada

Description: The following report summarizes the geological and geophysical studies made on the rocks of the Midi Mist site in the Area-12 tunnel complex of the Nevada Test Site. The data was needed to determine whether the rock met the technical criteria of the nuclear experiment.
Date: February 6, 1967
Creator: Carroll, Roger D.; Ege, John R.; Scott, J. H. & Cunningham, D. R.
Partner: UNT Libraries Government Documents Department
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Geophysical and Geologic Field Measurements for the U12n.03 Tunnel, Nevada Test Site, Nevada

Description: This report summarizes results on surveys taken by the U.S. Geological Survey made to determine the seismic velocity, electrical resistivity, and preliminary geology of rock in the U12n.03 tunnel, Nevada Test Site.
Date: May 26, 1967
Creator: Carroll, Roger D.; Ege, John R. & Cunningham, D. R.
Partner: UNT Libraries Government Documents Department
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