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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: 170408

Geology of the Iron King Mine, Yavapai county, Arizona

The Iron King mine is about 2,000 feet west-northwest of the intersection of the 112 15 west meridian and the 34 30 north parallel in the Humboldt region in central Yavapai County, Arizona. The mine is approximately in the geographical center of the Humboldt region. Precambrian rocks form the bedrock. Late Cenozoic unconsolidated river wash and valley fill with some interbedded basalt locally mant
Authors
S. C. Creasey

An interim report on gill disease

GILL DISEASE among fish, a disease which is characterized by a proliferation of the gill epithelium, has been attributed to a number of different causes. Generally, there are two recognized types: the eastern or bacterial type, in which long filamentous bacteria can always be demonstrated; and the western type, in which, by definition, bacteria cannot be demonstrated.
Authors
R.R. Rucker, H.E. Johnson, G.M. Kaydas
By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Western Fisheries Research Center

A field method for the determination of traces of cobalt in soils

No abstract available.
Authors
Hy Almond

A hydrogeologic problem in the proposed Echo Park Reservoir, Colorado

No abstract available.
Authors
H. E. Thomas

A magnetic anomaly near Bear Lake, Houghton County, Michigan

A large magnetic anomaly of unknown origin occurs about 1 1/2 miles east of Bear Lake, Houghton County, Michigan, in secs. 24 and 258 T. 56 N., R. 34 W. The occurrence is isolated in an area of very weakly magnetic rocks and has special geologic interest because it is adjacent to a non-magnetic rhyolite porphyry body that is stratigraphically higher than any other known igneous rock in the Keweena
Authors
James C. Wright

A memorandum report on four manganese claim groups near Socorro, New Mexico

No abstract available.
Authors
Sherman K. Neuschel

A method of marking larval lampreys

Biological investigations of lamprey populations in central New York have indicated a need for developing a method of marking larvae of the sea lamprey, Petromyzon marinus Linnaeus, and the American brook lamprey, Lampetra lamottei (Lesueur) Since lamprey larvae live in burrows in the soft sediments of the stream bottom, the use of an external tag is impractical.
Authors
Roland L. Wigley
By
Ecosystems Mission Area, Great Lakes Science Center

A new criterion for weathering in soils

[No abstract available]
Authors
B.N. Rolfe, C.D. Jeffries

A nomogram for obtaining percent composition by weight from mineral-grain counts

No abstract available.
Authors
Robert Berman

A rapid presemptive test for furunculosis in fish

No abstract available.
Authors
P.J. Griffin
By
Ecosystems Mission Area, Eastern Ecological Science Center

A semiquantitative spectrographic method for the analysis of minerals, rocks, and ores (II)

No abstract available.
Authors
C. L. Waring, C.A. Annell

A spectrographic method for determining trace amounts of lead in zircon and other minerals

No abstract available.
Authors
C. L. Waring, Helen Worthing