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Science Quality and Integrity

The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.

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Browse more than 82,000 reports authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.

Filter Total Items: 83829

The Nelchina-Susitna region, Alaska

No abstract available.
Authors
Theodore Sheffield Chapin

The Newington moraine, Maine, New Hampshire, and Massachusetts

No abstract available.
Authors
F.J. Katz, Arthur Keith

The oxidized zinc ores of Leadville, Colorado

No abstract available.
Authors
G. F. Loughlin

The Pliocene history of northern and central Mississippi

The record of Pliocene time in northern and central Mississippi is generally assumed to be scant or lacking. The published geologic maps of this region show no Pliocene formations, and the only deposit in the region that has been assigned to the Pliocene is the un-mapped so-called Lafayette formation. This formation, however, in recent years has lost some of its good standing, for several students
Authors
E.W. Shaw

The Quaternary geology of southeastern Wisconsin, with a chapter on the older rock formations

No abstract available.
Authors
W. C. Alden

The rice rats of North America (genus Oryzomys)

No abstract available.
Authors
Edward A. Goldman

The Salt Creek oil field, Wyoming

No abstract available.
Authors
Carroll H. Wegemann

The structural and ornamental stones of Minnesota

No abstract available.
Authors
Oliver Bowles

The upper Chitina Valley, Alaska, with a description of the igneous rocks

No abstract available.
Authors
Fred Howard Moffit, Robert Milton Overbeck

Thirty-ninth annual report of the Director of the United States Geological Survey

The appropriations for the work of the United States Geological Survey for the fiscal year 1917-18 comprised items amounting to $1,750,520. The plan of operations as approved by the Secretary of the Interior contemplated surveys and investigations in the United States and Alaska designed mainly to obtain information or to encourage activities essential to the rapid and successful prosecution of th
Authors
George Otis Smith

Topographic instructions of the United States Geological Survey

This book is intended to replace the instructions relating to the topographic work of the United States Geological Survey, issued as a part of the general Survey, instructions of 1903, which are now in many respects obsolete, although revised portions of them have, from time to time, been issued as circular letters or printed leaflets. The several portions of this book were prepared by the members
Authors

Second report of the Hawaiian Volcano Observatory of the Massachusetts Institute of Technology and the Hawaiian Volcano Research Association: On cyclical variations in eruption at Kilauea

This work treats chiefly of observed changes in the height of stand of molten lava in the crater of Kilauea. It also takes account of concurrent variations in the apparent energy of eruptive action at the surface of the magma column. With little doubt these conditions vary in a complex periodic way.To explain these periods in part an hypothesis is advanced which depends upon recurrent astronomical
Authors
Harry O. Wood
By
Volcano Hazards Program, Volcano Science Center, Hawaiian Volcano Observatory