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Middle Tertiary plutonism in the Santa Catalina and Tortolita Mountains, Arizona
S.C. Creasey, Norman G. Banks, R. P. Ashley, Ted G. Theodore
1976, Open-File Report 76-262
Recent reconnaissance geologic mapping in the Santa Catalina and Tortolita Mountains of southeastern Arizona, supplemented by new and published potassium-argon and fission-track ages, suggests that a large middle Tertiary (about 25 m.y.) composite batholith crops out extensively in both mountains. More than two-thirds of the batholith and the contiguous wallrocks...
Interpretation of magnetic surveys in intermontane valleys of Nevada and southern New Mexico
G. D. Bath
1976, Open-File Report 76-440
An evaluation of the magnetic method of geophysical exploration in intermontane valleys is made through examples of magnetic properties, magnetic surveys, reduction of data, and analysis of magnetic anomalies from some valley areas. Measurements of magnetic properties of samples collected along valley margins or from drill holes indicate that the...
Hydrology of the solid waste burial ground as related to potential migration of radionuclides, Idaho National Engineering Laboratory
Jack T. Barraclough, J.B. Robertson, V.J. Janzer, L.G. Saindon
1976, Open-File Report 76-471
A study was made (1970-1974) to evaluate the geohydrologic and geochemical controls on subsurface migration of radionuclides from pits and trenches in the Idaho National Engineering Laboratory (INEL) solid waste burial ground and to determine the existence and extent of radionuclide migration from the burial ground. A total of about...
Handbook for USGS Central California Microearthquake Network, 1969-1975
Stephen Travis Houck, J.D. Guerrero, A.E. Miller, W.H. Lee
1976, Open-File Report 76-282
The Central California Microearthquake Network of the United States Geological Survey furnishes a large volume of earthquake data concerning seismic activity in Central California. It is our hope that this report will render these data more accessible. We will try to accomplish this by presenting tables dealing with station location,...
Guide to the availability of hydrologic data, Greater Pittsburgh region, Pennsylvania
Robert M. Beall
1976, Open-File Report 76-352
A great variety of hydrologic data are collected by many governmental agencies and other entities for diverse purposes. Some of the data are compiled and reported in readily available, widely known publications; some are not. Continuing requests for information on the locations of data collection sites and on the sources...
Field trip to Nevada test site
Water Resources Division, U.S. Geological Survey
1976, Open-File Report 76-313
Two road logs guide the reader through the geologic scene from Las Vegas to Mercury and from Mercury through eight stops on the Nevada Test Site. Maps and cross sections depict the geology and hydrology of the area. Included among the tables is one showing the stratigraphic units in the...