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Publication Extents

Not all publications have extents, not all extents are completely accurate
Density comparison method for the measurement of isotopic variations in prepared waters
Joseph Howard McCarthy Jr., Thomas Seward Lovering, Herbert Williams Lakin
1965, Open-File Report 65-103
The falling-drop method of density determination has been modified so that the densities of a standard and a sample water are compared simultaneously. A constant temperature bath that does not vary more than 0.0001°C and an accurate double micropipet are described. The method has sufficient sensitivity and precision to distinguish...
An appraisal of the ground-water resources of the lower Susquehanna River basin (An interim report)
Paul R. Seaber, Este F. Hollyday
1965, Open-File Report 65-146
This report describes the availability, quantity, quality, variability, and cost of development of the ground-water resources in the lower Susquehanna River basin. The report has been prepared for and under specifications established by the Corps of Engineers, U. S. Army, and the Public Health Service, Department of Health, Education, and...
Terrain analysis of the lunar equatorial belt
John Francis McCauley
1965, Open-File Report 65-104
The U. S. Geological Survey began, in November 1963, a terrain analysis of the lunar equatorial belt (10°N-10°S, 60° W15°E), on behalf of the National Aeronautics and Space Administration. The purpose of the study is to establish a quantitative classification system in terms of different degrees of relative resolvable roughness,...
Gravity survey in the San Luis Valley area, Colorado
J. Robert Gaca, Daniel E. Karig
1965, Open-File Report 66-46
During the summers of 1963 and 1964, a regional gravity survey covering 6,000 square miles of the San Luis Valley and surrounding areas was made to determine subsurface basement configurations and to guide future crustal studies. The San Luis Valley, a large intermontane basin, is a segment of the Rio...
A field method for the determination of silver in soils and rocks
H. M. Nakagawa, H. W. Lakin
1965, Open-File Report 65-182
A rapid, sensitive, and specific field method useful in geochemical exploration has been developed for the determination of silver in geologic materials. In this method the sample is digested with nitric acid and the silver is extracted with triisooctyl thiophosphate (TOTP) in benzene and stripped from the organic phase with...