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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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We are focused on some of the most significant issues society faces, and our science is making a substantial contribution to the well-being of the Nation and the world. Learn more about the major topics our research covers and the programs focused on those topics.

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Filter Total Items: 171122

The recognizable species of the Green River flora

No abstract available.
Authors
R.W. Brown

The value of questionnaires in commercial fisheries regulations and surveys

No abstract available.
Authors
John Van Oosten
By
Ecosystems Mission Area, Great Lakes Science Center

Ulcer disease of trout

During the summer of 1933, lesions of a disease were noted among some fingerling brook, rainbow, blackspotted, and lake trout at the Cortland (New York) trout hatchery. Although these lesions bore a marked superficial resemblance to those of furunculosis, they were sufficiently atypical to warrant further investigation. A more detailed examination of the lesions proved them to be of a distinct dis
Authors
F. F. Fish
By
Ecosystems Mission Area, Western Fisheries Research Center

Classification and nomenclature of rock units

No abstract available. 
Authors
G. H. Ashley, M.G. Cheney, J.J. Galloway, C.N. Gould, C. J. Hares, B.F. Howell, A.I. Levorsen, H. D. Miser, R.C. Moore, J. B. Reeside, W. W. Rubey, T. W. Stanton, G. W. Stose, W.H. Twenhofel

A new lepidolite deposit in Colorado

A newly discovered pegmatite deposit near Ohio City, Colorado, is chiefly lepidolite, massive topaz, beryl, and albite, with some samarskite and columbitc. Three parallel pegmatite dikes, cach about 11 fect thick and 300 feet long, cut black schist. The minerals arc banded parallel to walls, with the following succession from walls to center; fine‐grained albite and quartz, large plates of lcpidol
Authors
E.B. Eckel

Rôle of water conditions in the formation and differentiation of common (banded) coals

No abstract available, 
Authors
D. White

Origin and structure of the Pensauken gravel

No abstract available.
Authors
Marius Robinson Campbell, Florence Bascom

Chloride and sulfate in rain water

No abstract available. 
Authors
W. D. Collins, K.T. Williams

The lode deposits in the Boise Basin, Idaho

No abstract available. 
Authors
C. P. Ross

Specific yield determined from a Thiem's Pumping‐Test

The specific yield of a water-bearing formation is defined as the ratio of (1) the volume of water, which after being saturated, it will yield by gravity to (2) its own volume (O. E. Meinzer, Outline of ground-water hydrology, U.S. Geol. Sur. Water-Supply Paper 494, p. 28, 1923). It is a measure of the quantity of water that a formation will yield when it is drained by lowering of the water-table.
Authors
L.K. Wenzel

Further remarks on the Cripple Creek Volcano, Colorado

Structural evidence, particularly in the deeper mine‐workings, indicates that the volcano, which is of Tertiary age, was developed by explosive eruptions at a number of points along intersecting fissure‐systems that had been formed in pre‐Cambrian granite by east‐west compression, probably during the Laramide revolution. The volcanic breccia, which consists principally of phonolitic material, appe
Authors
G. F. Loughlin

Volcanic history of the Magdalena District, New Mexico

The Magdalena District in central New Mexico comprises the Magdalena Range and Granite Mountain which are block mountains of the Basin Range type. They consist of Carboniferous sedimentary formations on a pre-Cambrian basement and are covered by Tertiary volcanic rocks.Volcanism in the District was preceded by considerable faulting, tilting, and uplifting very probably in early Tertiary time. The
Authors
A. H. Koschmann