Introduction: "This report presents physical property analyses for 28 additional samples and is a supplement to Geological Survey Technical Letter: Area-12-1, which gave a brief summary of the geology, descriptive data on the tunnel, and X-ray, chemical, semiquantitative spectrographic analyses, and some physical properties determinations of samples collected in the U12g.01 tunnel."

This report summarizes the gravity data of the Area 12, Nevada Test Site.

This report presents the physical properties of tuff in the vicinity of the U12g.01 tunnel at the Nevada Test Site based off of two previous Technical Letters on the tunnel: Technical Letter: Area 12-1, and Technical Letter 12-1, Supplement 1.

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 from the borehole gravity meter data for the alluvium plus the lake beds is 2.22 gm/cc and for the volcanic rocks is 2.35 gm/cc."

This report presents the gravity data of drill hole Ue19n at the Nevada Test Site.

The following report describes the computer technique for tracing seismic rays in two-dimensional geological models in the state during the time this report was written, and presents some preliminary results.

The following report explains the seismic ray models presented in this report.

From contributions of astrogeology: The principal goal of research in astrogeology is the solution of several cardinal problems of geology...The present volume is the first of a series of professional papers that will describe major results of research in astrogeology.

From introduction: The general objectives of this Geological Survey were to study the geologic and geophysical studies of the effects of underground nuclear explosions under Rainier Mesa.

Abstract: As a part of continuous geologic and geophysical investigations at the Nevada Test Site, gamma-radioactivity measurements are being made in tunnels and drill holes to determine semiquantitatively the natural gamma radioactivity of geologic formations and the distribution of nuclear-explosion-produced radioisotopes.

Abstract: "Geodimeter surveys were made on four traverses near the east scarp of Rainier Mesa between October 27, 1967 and April 26, 1968. These measurements were made in order to determine if an changes in distance between survey stations had resulted from downslope creep of the rocks behind the scarp, or if any displacements had resulted from nuclear explosions beneath the mesa and in adjacent areas. A persistent small but possibly significant, slopeward displacement was measured along one traverse and may represent detachment of a large block; monitoring for an additional period of time is recommended."

From purpose and scope: The purpose of this report is to present all the previously collected hydrogeologic, geophysical, and hydrochemical data on well J-13, and to reanalyze these data, using newly developed methods of analysis.

A geological map and sections of the Ammonia Tanks quadrangle at the Nevada test site, Nye County, Nevada

Preliminary 16 x 7.5 minute map of the Thirsty Canyon quadrangle, showing geology, roads, drainage, meridians and parallels, triangulation stations, and air-photo centers and wing points.

The following report provides a geological map of sections of the Thirsty Canyon South East quadrangle of Nye County, Nevada.

This report summarizes the geological features of the Pahute Mesa map in the Nevada Test Site.

This is a geologic map of the Scrugham Peak quadrangle in Nye County, Nevada.

This is a geological map of the Buckboard Mesa quadrangle in Nye County, Nevada.

This is a geological map of the Cane Spring quadrangle in Nye County, Nevada.

This is a geological map of the Dead Horse Flat quadrangle in Nye County, Nevada.

The following report provides a geological map of the Deadhorse Flat quadrangle, Nye County, Nevada.

This is a geological map of the Frenchman Flat quadrangle of Nye County, Lincoln, and Clark Counties, Nevada.

This is a geologic map of the Lathrop Wells quadrangle in Nye County, Nevada.

Map of the Mine Mountain Quadrangle in Nye County, Nevada.