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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse more than 65,000 articles authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.
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Preliminary report on the North Atlantic deep‐sea cores taken by the Geophysical Laboratory, Carnegie Institution
A series, of 11 cores from the North Atlantic sea‐bottom between the Newfoundland Banks and the banks off the Irish Coast have been studied by a group of geologists of the United States Geological Survey. These cores were taken by Dr. C. S. Piggot of the Carnegie Institution's Geophysical Laboratory from the cable ship Lord Kelvin with the explosive type of sounding‐apparatus, which he designed (C
Authors
W.H. Bradley, M. N. Bramlette, J.A. Cushman, L.G. Henbest, K.E. Lahman, P.D. Trask
The problem of the Chelmsford, Massachusetts, Granite
The Chelmsford granite is quarried in and around Oak Hill, about six miles west of Lowell, Massachusetts. The granite‐area is about eight miles long and one to three miles wide, and its longer dimension has a northeast bearing which is parallel with the regional axis of foliation in the country rock. The writer favors a hypothesis that much of the granite represents granitization of biotite schist
Authors
L.W. Currier
Origin of the bedding replacement deposits of fluorspar in the Illinois field
The banded fluorspar deposits of the Cave In Rock district are attributed to replacement of limestone and the preservation of bedding and cross-bedding of the rock. The solutions contained hydrofluoric acid which reacted with CaCO 3 . The replacement was stoichiometrical, with consequent reduction of volume, but continued deposition of calcium fluoride, brought in from other points, partly or comp
Authors
L.W. Currier
Determination of mercurous chloride and total mercury in mercury ores
No abstract available.
Authors
J. J. Fahey
First records of the smelt, Osmerus mordax, in Lake Erie
Abstract has not been submitted
Authors
John Van Oosten
Furunculosis in wild trout
Furunculosis, or as it has been more appropiately termed, "fish septicemia," is a disease primarily affecting salmon and trout. It is caused by the invasion and growth of Bacterium salmonicida Emmerich and Weibel, a Gram negative, non-spore forming, diplobacterium belonging to the family Bacteriaceae Cohn. After gaining entrance to the host, presumably by way of the digestive tract, the organism i
Authors
F. F. Fish
The age, growth, and sex ratio of the Lake Superior longjaw, Leucichthys zenithicus (Jordan and Evermann)
Abstract has not been submitted
Authors
John Van Oosten
The Artificial propagation of the commercial species of fish of the Great Lakes
No abstract available.
Authors
John Van Oosten
The dispersal of smelt, Oserus mordax (Mitchill), in the Great Lakes region
No abstract avaiable.
Authors
John Van Oosten
The Great Lakes fisheries: their proper management for sustained yields
No abstract available.
Authors
John Van Oosten