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Page 1189, results 29701 - 29725

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Not all publications have extents, not all extents are completely accurate
Aluminum resources of Brazil
Max Gregg White
1975, Open-File Report 75-30
Large deposits of bauxite, the principal ore of aluminum, occur at several places in Brazil. The largest deposits now undergoing extensive exploration and development are in the eastern Amazon Basin. Most of these deposits are in the State of Para, but some are in Amazonas and Maranhao.Discovery of large-scale resources...
Predicted double-couple S-polarization angles
W.H. Dillinger
1975, Open-File Report 75-24
The main purpose of this paper is to provide a graphical procedure with which to evaluate the orientation of an earthquake source using S-polarization angles. Background material is presented on the use of S-polarization angles, including the necessary material for the use of the catalog and the manner of its...
Numerical model of the salt-wedge reach of the Duwamish River estuary, King County, Washington
Edmund A. Prych, W.L. Haushild, J.D. Stoner
1975, Open-File Report 75-13
A numerical model of a salt-wedge estuary developed by Fischer has been expanded and used to calculate the distributions of salinity, temperature, chlorophyll a concentrations, biochemical oxygen demand, and dissolved-oxygen concentrations in the Duwamish River estuary, King County, Wash. With this model, which was calibrated and verified with observed data,...
Sediments, structural framework, petroleum potential, environmental conditions, and operational considerations of the United States North Atlantic Outer Continental Shelf
Water Resources Division, U.S. Geological Survey
1975, Open-File Report 75-353
The area designated for possible oil and gas lease sale as modified from BLM memorandum 3310 #42 (722) and referred to therein as the North Atlantic Outer Continental Shelf (OCS) contains about 58,300 sq km of shelf beneath water depths of less than 200 m and lies chiefly within the...
Reconnaissance of the geology and ore mineralization in part of the Chagai District, Pakistan
Raymond H. Nagell
1975, Open-File Report 75-550
The Chagai District of the Quetta Division is in the northwestern part of Pakistan. Igneous activity during the Himalayan orogeny included the extrusion of horizontally layered andesites of the Cretaceous Sinjrani Volcanic Group, emplacement of monzonitic stocks of the Cretaceous Chagai intrusions, and the extrusion of flows and tuffs of the...
Flood of April 1975 at Meridian Township, Michigan
R. L. Knutilla, L.A. Swallow
1975, Open-File Report 75-301
On April 18 between 5 p.m. and 12 p.m. Meridian Township experienced an intense rain storm that caused the Red Cedar River to overflow its banks resulting in extensive flooding.  The Federal Disaster Assistance Administration report that five homes were destroyed, and 332 homes and 10 businesses damaged.  Early estimates...
U, Th, and K analyses of selected plutonic rocks from west-central Alaska
Thomas P. Miller, Carl M. Bunker
1975, Open-File Report 75-216
Numerous samples of plutonic rocks collected during reconnaissance mapping in western Alaska have been analyzed for K, U, and Th. The U and Th content of the plutonic rocks from the southeastern Seward Peninsula have been discussed in a separate report (Miller and Bunker, 1975); because of the current interest...
Self-calibrating seismic amplifier and telemetry system
John R. Van Schaack
1975, Open-File Report 75-64
A frequency modulated, constant bandwidth, telemetry system has been designed to transmit simultaneously up to 8 channels of seismograph data from remote locations to a central recording site via radio or voice-grade telephone circuit. By utilizing state-of-the-art integrated circuits, the size of the remote unit has been considerably reduced over...