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Browse more than 160,000 publications authored by our scientists over the past 100+ year history of the USGS.  Publications available are: USGS-authored journal articles, series reports, book chapters, other government publications, and more.

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Filter Total Items: 171268

Muskrats

No abstract available.
Authors
H.A. Merrill

Tree squirrels and chipmunks: their habits and controls.

No abstract available.
Authors
John A. Ludeman

Wood rats

No abstract available.
Authors
H. Nelson Elliott

Cotton rats

No abstract available.
Authors
Milton Caroline

Annual fur catch of the United States

No abstract available.
Authors
Frank G. Ashbrook

A field method for the determination of titanium in rocks

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 yellow solution with permanent standards, which are simple to prepare.The results obtained by this field met
Authors
Leonard Shapiro, Walter Wallace Brannock

Terminology for stratification and cross-stratification in sedimentary rocks

A terminology is suggested to aid the field geologist in describing the structures of stratified and cross-stratified rock units. Qualitative terms describing the character of rock layering are stratification, stratum, cross-stratification, cross-stratum, set, coset, and composite set. Quantitative terms applying to the thickness of stratification are very thick-bedded, thick-bedded, thin-bedded,
Authors
Edwin D. McKee, Gordon W. Weir

Carnotite resources of the Dolores bench, Montrose County, Colorado

The Dolores bench is about 2 miles northwest of Uravan, Montrose County, Colo. From 1913 to November 1952 about 95,000 short tons of ore averaging 0.40 percent U3O8 and 2.0 percent V2O5 was mined from the Dolores bench. The production represents three periods of activity--1913-18, 1938-43, and 1948-52. The ore deposits are in broad sandstone lenses near the top of the Salt Wash member of the Jura
Authors
Daniel Alfred Jobin

Stratigraphic sections of the Phosphoria formation in Wyoming, 1952

The U.S. Geological Survey has measured and sampled the Phosphoria formation of Permian age at many localities in Wyoming and adjacent states. These data will not be fully synthesized for many years, but segments of the data, accompanied by little or no interpretation, are published as preliminary reports as they are assembled. This report, which contains abstracts of the sections measured in wes
Authors
R.P. Sheldon, E. R. Cressman, L.D. Carswell, R.A. Smart

Stratigraphic sections of the Phosphoria formation in Wyoming, 1951

The U.S. Geological Survey has recently measured and sampled the Phosphoria formation at many localities in Wyoming and adjacent states. These data will not be fully synthesized for many years, but segments of the data, accompanied by little or no interpretation, are published as preliminary reports as they are assembled. This report, which contains abstracts of the sections measured in western W
Authors
Thomas McGriffin Cheney, Richard Porter Sheldon, R.G. Waring, M.A. Warner

Stratigraphic sections of the Phosphoria formation in Wyoming, 1949-50

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 Phosphoria formation of Permian age at many localities in Wyoming and adjacent states. These data will not be fully synthesized for many years, but segments of the data, accompanied by little or no interpretation, are published as preliminar
Authors
R.P. Sheldon, R.G. Waring, M.A. Warner, R.A. Smart

Stratigraphic sections of the Phosphoria Formation in Montana, 1949-50: part II

The U.S. Geological Survey has recently measured and sampled the Phosphoria formation at many localities in Montana 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 they are assembled. This report, which contains abstracts of many of the se
Authors
R. W. Swanson, E. R. Cressman, R. S. Jones, B.K. Replogle
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