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185311 results.

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Page 7053, results 176301 - 176325

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Discussion of “the efficiency of depth‐integrating suspended‐sediment sampling”
R. F. Kreiss, B. R. Colby, Ning Chien
1953, Eos, Transactions, American Geophysical Union 796-797
The author has developed equations and approximate curves to express the percentage of the total sediment discharge that is carried in suspension above the lowest point reached by the nozzle of a depth‐integrating sediment sampler. He assumes that bed load and suspended load are defined by the equations in a...
Stratigraphic sections of the phosphoria formation in Idaho, 1950-51
R.A. Smart, R.G. Waring, T. M. Cheney, R.P. Sheldon
1953, Trace Elements Investigations 376
The U.S. Geological Survey has recently measured and sampled the Phosphoria formation at many localities in Idaho and other western states. These data will not be fully synthesized and analyzed for several years, but segments of the data, accompanied by little or no interpretation, are published as preliminary reports as...
Reconnaissance of superficial phosphate deposit near Minas, Uruguay
E.B. Eckel, C. Milton
1953, Economic Geology (48) 437-446
The phosphate deposit in Uruguay described here is of interest primarily because it is believed to be a superficial deposit that resulted from the action of guano on volcanic rock. Even though some of the rock contains as much as 30 per cent P206, it is unavailable as a source...
Metamorphic differentiates in the blackbird mining district, Lemhi County, Idaho
Wayne A. Roberts
1953, Economic Geology (48) 447-456
Quartz pods and quartz veins devoid of economic minerals occur in the cobalt-copper mineralized Blackbird mining district in Lemhi County, Idaho. These barren quartz bodies are found in regionally and thermally metamorphosed rocks of the Yellowjacket formation (Belt series) of Pre-cambrian age and are believed to be derived from the enclosing quartz-biotite and quartz-biotite-garnet-chloritoid schists by metamorphic differentiation. Other rocks that possibly are...
Petrology of granophyre in diabase near Dillsburg, Pennsylvania
Preston E. Hotz
1953, Geological Society of America Bulletin (64) 675-704
Small bodies of granophyre occur in the upper part of diabase bodies of Triassic age in southeastern Pennsylvania. One near Harrisburg was penetrated by a diamond-drill. Drill core specimens show a gradation from diabase to granophyre.New data include 10 chemical analyses, spectrographic determinations of trace elements, and the results of...
The influence of ground‐water storage on the runoff in the San Bernardino and eastern San Gabriel Mountains of Southern California
Harold C. Troxell
1953, Eos, Transactions, American Geophysical Union (34) 552-562
The steep and rugged mountains of Southern California contain considerable ground‐water storage. A large portion of the runoff is seepage from this storage The variations in runoff distribution depend on the geology, physiography, and soil cover of these mountain areas....
Stratigraphic sections of the phosphoria formation in Utah, 1949-1951
T. M. Cheney, R.A. Smart, R.G. Waring, M.A. Warner
1953, Trace Elements Investigations 360
As part of a comprehensive investigation of the phosphate deposits of the western field begun in 1947, the U.S. Geological Survey has measured and sampled the full thickness of the Permian Phosphoria formation and its partial correlative, the Park City formation, at many localities in Utah and other states....
Muskrats
H.A. Merrill
1953, Wildlife Leaflet 358
No abstract available....
Wood rats
H. Nelson Elliott
1953, Wildlife Leaflet 354
No abstract available....
Cotton rats
Milton Caroline
1953, Wildlife Leaflet 353
No abstract available....
A field method for the determination of titanium in rocks
Leonard Shapiro, Walter Wallace Brannock
1953, Economic Geology (48) 282-287
About 4 mg of rock powder measured with a scoop is fused with potassium bisulfate in a test tube. Tiron is added to the cool melt and the mixture is dissolved in a buffer solution. Sodium dithionite is added and the approximate concentration of TiO 2 is determined by comparing the resulting...