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Page 5423, results 135551 - 135575

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Water resources data for Washington, water year 1975
Water Resources Division, U.S. Geological Survey
1976, Water Data Report WA-75-1
Water resources data for the 1975 water year for Washington consist of records of stage, discharge, and water quality of streams; stage, contents, and water quality of lakes and reservoirs; and water-levels and water quality of wells and springs. This report contains discharge records for 250 gaging stations; stage only...
Water and stream-sediment sampling techniques for use in uranium exploration
Karen J. Wenrich-Verbeek
1976, Open-File Report 76-77
Methods of sampling water and stream sediments for uranium were established in this study. Water samples should be taken using a US DH-48 water sampler across the stream channel and should be filtered and acidified in situ. Stream sediments should be taken as a composite sample up and across the...
Maps showing mineralogical and geochemical data for heavy-mineral concentrates in the Tanacross quadrangle, Alaska
R. B. Tripp, G.C. Curtin, G.W. Day, R. C. Karlson, S.P. Marsh
1976, Miscellaneous Field Studies Map 767-O
This series of maps showing the following data for heavy mineral concentrates: distribution and abundance of selected ore-related minerals, distribution and abundance of copper in the magnetic fraction, and distribution and abundance of lead, copper, tin, beryllium, tungsten and bismuth in the nonmagnetic fraction. The data are plotted on base...
Empirical transfer functions for stations in the Central California seismological network
W. H. Bakun, Jay Dratler
1976, Open-File Report 76-259
A sequence of calibration signals composed of a station identification code, a transient from the release of the seismometer mass at rest from a known displacement from the equilibrium position, and a transient from a known step in voltage to the amplifier input are generated by the automatic daily calibration...
Oxalic-acid leaching of rock, soil, and stream-sediment samples as an anomaly-accentuated technique
Henry V. Alminas, Elwin L. Mosier
1976, Open-File Report 76-275
In many instances total-rock and sieved-soil and stream-sediment samples lack the sensitivity and contrast required for reconnaissance exploration and necessary in the search for blind ore deposits. Heavy-mineral concentrates incorporate the required sensitivity and contrast but are overly expensive for two reasons: time-consuming sample preparation is required to obtain them,...
A probabilistic estimate of maximum acceleration in rock in the contiguous United States
Sylvester Theodore Algermissen, David M. Perkins
1976, Open-File Report 76-416
This paper presents a probabilistic estimate of the maximum ground acceleration to be expected from earthquakes occurring in the contiguous United States. It is based primarily upon the historic seismic record which ranges from very incomplete before 1930 to moderately complete after 1960. Geologic data, primarily distribution of faults, have...