Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Results

165658 results.

Alternate formats: RIS file of the first 3000 search results  |  Download all results as CSV | TSV | Excel  |  RSS feed based on this search  |  JSON version of this page of results

Page 5201, results 130001 - 130025

Show results on a map

Publication Extents

Not all publications have extents, not all extents are completely accurate
Map showing anomalous tungsten and gold distribution in stream sediment concentrates, Hillsboro and San Lorenzo quadrangles exclusive of the Black Range Primitive Area, Sierra and Grant Counties, New Mexico
K. C. Watts, H. V. Alminas, J. M. Nishi, W.C. Crim
1978, Miscellaneous Field Studies Map 900-I
This map shows the distribution of anomalous tungsten in the two sample fractions, magnetic (M-1) and nonmagnetic (NM-1) gold in the nonmagnetic (NM-1) fraction; these are plotted on a base which includes sample localities, topography, and generalized geology modified from Hedlund (1975a, b). It is part of a series of...
Comparison of the Wilfley concentration table and hand panning for concentration of heavy minerals prior to geochemical analysis
William R. Greenwood, M.E. Koesterer, Steve Ludington, Donald A. Risoli
1978, Open-File Report 78-712
Chemical analysis of heavy—mineral concentrates of stream sediments is a common geochemical exploration technique used by the U.S. Geological Survey. Generally these concentrates are prepared by hand panning at streamside or in a washtub and then further concentrated using heavy—liquid (bromoform) techniques in a laboratory. Concentration using heavy liquids is...
Water resources data for Alabama, water year 1977
Water Resources Division, U.S. Geological Survey
1978, Water Data Report AL-77-1
Water resources data for the 1977 water year for Alabama consist of records of stage, discharge, and water quality of streams; stage and contents of lakes and reservoirs; and water levels and water quality of ground water. This report contains discharge records for 92 gaging stations; stage only records for...
Model evaluation of the hydrogeology of the Cypress Creek well field in west-central Florida
Paul D. Ryder
1978, Water-Resources Investigations Report 78-79
The Cypress Creek well field is being developed to help supply a rapidly growing population in west-central Florida. The ground-water system in the Cypress Creek well-field area consists of a surficial sand aquifer, a semiconfining clay layer ranging from 2 to 25 feet in thickness, and a sequence of carbonate...
Map showing anomalous bismuth distribution in stream sediment concentrates, Hillsboro and San Lorenzo quadrangles, exclusive of the Black Range Primitive Area, Sierra and Grant counties, New Mexico
K. C. Watts, H. V. Alminas, J. M. Nishi, W.C. Crim
1978, Miscellaneous Field Studies Map 900-K
This map shows the distribution of anomalous bismuth in the nonmagnetic (NM-1) sample fraction plotted on a base which includes sample localities, topography, and generalized geology modified from Hedlund (1975a, b). It is part of a series of maps for several metals that accompany this folio. Distributions of bismuth values...
Geochemical explorations for gold deposits at Goldfield, Nevada
Roger P. Ashley, William J. Keith
1978, Open-File Report 78-228
The main problem in geochemical exploration for gold ore bodies in the 40 km2 hydrothermally altered area at Goldfield is to decide which of the many silicified ledges exposed are most likely to yield deposits with additional subsurface exploration. We conclude that the most efficient way to search for exploration...
Hydrologic data for the Antlers aquifer, southeastern Oklahoma
Robert E. Davis, Donald L. Hart Jr.
1978, Open-File Report 78-1038
The U.S. Geological Survey has collected data on Oklahoma's ground-water resources since 1934. Most of these data were collected as part of specific ground-water studies conducted in cooperation with various Federal, State, and local agencies.The information in this report was obtained in the field, from published reports (Davis, 1960, Hart,...
Gas-driven pump for ground-water samples
Donald C. Signor
1978, Water-Resources Investigations Report 78-72
Observation wells installed for artificial-recharge research and other wells used in different ground-water programs are frequently cased with small-diameter steel pipe. To obtain samples from these small-diameter wells in order to monitor water quality, and to calibrate solute-transport models, a small-diameter pump with unique operating characteristics is required that causes...
High resolution seismic profiles, side scan sonar records, and sampling locations from lower Cook Inlet and Kodiak Shelf, R/V SEA SOUNDER cruise S7-77-WG, September - October, 1977
Arnold H. Bouma, Monty A. Hampton
1978, Open-File Report 78-727
During the period from September 14 through October 10, 1977 the second U.S. Geological Survey geo-environmental cruise was conducted in lower Cook Inlet and on the Kodiak shelf and adjacent upper continental slope, Gulf of Alaska, aboard the R/V SEA SOUNDER (Figure 1, Tables 1, 2 and 3). The objective...
Map showing placer deposits of the Seward and Blying Sound quadrangles, Alaska
Russell G. Tysdal
1978, Miscellaneous Field Studies Map 880-B
Placer gold was first recovered from stream gravels of the Seward quadrangle about 1850 by P.P. Doroshin, a mining engineer employed by the Russian-American Company. He obtained a few ounces of gold from gravels from two streams that flow into the Kenai River below Kenai Lake (Moffit, 1906, p. 8)....
Selected hydrologic data, 1931-77, Wasatch Plateau-Book Cliffs coal-fields area, Utah
K.M. Waddell, H.L. Vickers, Robbin T. Upton, P. Kay Contratto
1978, Open-File Report 78-121
The Wasatch Plateau-Book Cliffs coal-fields area in east-central Utah includes a significant part of the State's coal resources and is currently (1977) the most active coal-mining area in the State.This report presents data gathered by the U.S. Geological Survey as part of a hydrologic reconnaissance carried out during the period...