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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: 171122

The sources of our iron ores. II

In this instalment** the iron ore deposits of the Lake Superior States, which normally furnish about 80 per cent, of the annual output of the United States, are described together with historical notes on discovery and transportation of ore. Deposits in the Mississippi Valley and Western States are likewise outlined and the sources of imported ore are given. Reviewing the whole field, it is indica
Authors
E. F. Burchard

The Suslota Pass district, upper Copper River region, Alaska

No abstract available.
Authors
F. H. Moffit

The Tatonduk-Nation district, Alaska

No abstract available.
Authors
John Beaver Mertie

The Valdez Creek mining district, Alaska

No abstract available.
Authors
C. P. Ross

The Willow Creek gold-lode district, Alaska

No abstract available.
Authors
J. C. Ray

On glaciers

The changes in the sizes of glaciers has for long attracted the attention of glacialists on account of the scientific interest and the development of water‐power from the streams issuing from the glaciers.The International Congress of Geologists, at its Zurich meeting in 1894, appointed a committee, with members from many countries, to collect and publish information bearing on this subject. Annua
Authors
F. E. Matthes

On underground water

No abstract available.
Authors
David G. Thompson

Investigations of the fluctuations of the ground‐water table in Pennsylvania

Hydraulic engineers are interested in ground‐water as a source of water supply and also as it affects stream‐flow. The stream‐flow is especially valuable at low stages and it is at the low stages that it is most closely related to the ground‐water conditions. For several years the Pennsylvania Topographic and Geologic Survey and the United States Geological Survey have cooperated in making a compr
Authors
S.W. Lohman

Recent investigations of Thiem's method for determining permeability of water‐bearing materials

This paper presents results obtained in an investigation of the ground-water resources of the Platte River Valley that is being conducted in cooperation between the Conservation and Survey Department of the University of Nebraska and the United States Geological Survey.Most quantitative ground-water studies are concerned with the amount of water that percolates into the discharge-area of an invest
Authors
L.K. Wenzel

Investigations of the fluctuations of water‐levels in observation‐wells in Virginia

An automatic water‐stage recorder has been maintained on an observation‐well in Arlington County, Virginia, about 1‐½ miles from the United States Weather Bureau, in Washington, D.C., since June, 1928, but there are a few interruptions in the record. This is a dug well, about 28 feet deep and extends through terrace deposits of gravelly silt or loam. It has not been used for water‐supply during th
Authors
R.C. Cady

Investigations of underground water problems in Arizona, California, New Mexico, and Oregon

This report is a summary of investigations in progress in 1932 in the southwestern portion of the United States. It covers only those investigations that deal with water in the zone of saturation, and excludes those that deal primarily with water in the zone of aeration. Arizona H. C. Schwalen, Irrigation Engineer, Agricultural Experiment‐Station, Tucson, Arizona, has proposed to undertake a study
Authors
Arthur M. Piper

Oil and gas fields of the United States

No abstract available.
Authors
G. B. Richardson, L.B. Pusey, M.E. Latimer, J. Hanna