Marine sediment sample preparation for analysis for low concentrations of fine detrital gold
H. Edward Clifton, Arthur Hubert, R. Lawrence Phillips
1967, Circular 545
Analyses by atomic absorption for detrital gold in more than 2,000 beach, offshore, marine-terrace, and alluvial sands from southern Oregon have shown that the values determined from raw or unconcentrated sediment containing small amounts of gold are neither reproducible nor representative of the initial sample. This difficulty results from a...
Economic significance of revised age relations of rocks in the Cornucopia mining district, Elko County, Nevada
Robert Roy Coats
1967, Circular 549
Recent geologic work in the Cornucopia mining district, a small silver-gold mining district in northwestern Elko County, Nev., has resulted in significant revision of the geological interpretation. Rocks formerly thought to be premineralization in age, but unmineralized, are now known to be postmineral extrusives, resting unconformably on the altered andesite...
Ground water of the Piedmont and Blue Ridge provinces in the Southeastern States
H. E. LeGrand
1967, Circular 538
The aeration capacity of streams
W. B. Langbein, W. H. Durum
1967, Circular 542
Water resources of Pulaski and Saline Counties, Arkansas
Raymond O. Plebuch, Marion S. Hines
1967, Water Supply Paper 1839-B
General field and office procedures for indirect discharge measurements
M. A. Benson, Tate Dalrymple
1967, Techniques of Water-Resources Investigations 03-A1
The discharge of streams is usually measured by the current-meter method. During flood periods, however, it is frequently impossible or impractical to measure the discharges by this method when they occur. Consequently, many peak discharges must be determined after the passage of the flood by indirect methods, such as slope-area,...
Measurement of peak discharge at dams by indirect methods
Harry Hulsing
1967, Techniques of Water-Resources Investigations 03-A5
This chapter describes procedures for measuring peak discharges using dams, weirs, and embankments. Field and office procedures limited to this method are described. Discharge coefficients and formulas are given for three general classes of weirs-sharp-crested, broad-crested, and round-crested-and for highway embankments and weirs of unusual shape. The effects of...
Instructions for using the punchcard system for the storage and retrieval of ground-water data. (NOTE: This publication is no longer maintained, USGS Library still has a copy)
Solomon Max Lang, Alvin Riley Leonard
1967, Techniques of Water-Resources Investigations 7-A
Measurement of peak discharge at width contractions by indirect methods
Howard Frederick Matthai
1967, Techniques of Water-Resources Investigations 03-A4
This chapter describes procedures for measuring peak discharges using open-channel width contractions. Field and office procedures limited to this method are described. The discharge equation based on the continuity and energy equations between an approach cross section and the contracted section under a bridge or contraction is given. Contractions...
Geologic map of the Belted Peak quadrangle, Nye County, Nevada
E. B. Ekren
1967, Geologic Quadrangle 606
Magnitude and frequency of floods in the United States, part 11. Pacific slope basin in California: Vol.1. Coastal basins south of the Klamath River basin and Central Valley drainage from the West
L. E. Young, R.W. Cruff
1967, Water Supply Paper 1685
No abstract available....
Magnitude and frequency of floods in the United States: Part 11. Pacific slope basins in California — Volume 2. Klamath and Smith River basins and Central Valley drainage from the east
L. E. Young, R.W. Cruff
1967, Water Supply Paper 1686
No abstract available....
Are we running out of water?
Raymond L. Nace
1967, Circular 536
Water supplies are not running out, but time is getting short to stem waste of water and destructive exploitation of the environment before harm is done that may be irreparable. Most of the world's water is oceanic brine. Of the waters on the land, most is frozen in Antarctica and...
Quality of surface waters of the United States, 1963, Parts 1 and 2, North Atlantic slope basins and south Atlantic slope and eastern Gulf of Mexico basins
S. K. Love
1967, Water Supply Paper 1947
Quality of surface waters of the United States, 1961, Parts 9-14, Colorado River basin to Pacific slope basins in Oregon and lower Columbia River basin
S. K. Love
1967, Water Supply Paper 1885
Quality of surface waters of the United States, 1961, Parts 7 and 8, Lower Mississippi River basin and western Gulf of Mexico basins
S. K. Love
1967, Water Supply Paper 1884
Quality of surface waters of the United States, 1961, Parts 1 and 2: North Atlantic slope basins and South Atlantic slope and Eastern Gulf of Mexico basins
S. K. Love
1967, Water Supply Paper 1881
Distribution of gold, tellurium, silver, and mercury in part of the Cripple Creek district, Colorado
Garland Bayard Gott, J. H. McCarthy, G.H. Van Sickle, J. B. McHugh
1967, Circular 543
Geochemical exploration studies were undertaken in the Cripple Creek district to test the possibility that large low-grade gold deposits might be found. Surface rock samples taken throughout the district indicate that the volcanic rocks between the productive veins contain an average of about 0.6 ppm (part per million) gold. In...
Locations and descriptions of lode prospecting in the Livengood area, east-central Alaska
Robert L. Foster, Robert M. Chapman
1967, Open-File Report 67-91
No abstract available....
Geology and uranium deposits of the Laguna district, New Mexico
Robert Hadley Moench, John Stevens Schlee
1967, Professional Paper 519
No abstract available....
Geologic map of the Gulf of Alaska Tertiary Province, Alaska
George Plafker
1967, IMAP 484
Pre-Quaternary geologic and magnetic map and sections of part of the eastern Gogebic Iron Range, Michigan
W. C. Prinz, J.A. Hallbert
1967, IMAP 497
Engineering geology of the Northeast Corridor, Washington D.C., to Boston, Massachusetts: Bedrock geology
Water Resources Division, U.S. Geological Survey
1967, IMAP 514-A
No abstract available....
Reconnaissance geologic map of the Sheridan Mountain quadrangle, Yavapai County, Arizona
M. H. Krieger
1967, IMAP 505
Reconnaissance geologic map of the Simmons quadrangle, Yavapai County, Arizona
M. H. Krieger
1967, IMAP 503
