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

165623 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 4796, results 119876 - 119900

Show results on a map

Publication Extents

Not all publications have extents, not all extents are completely accurate
Drilling results at the Farah Garan ancient mine, southwestern Saudi Arabia
Charles W. Smith, Mustafa M. Mawad
1982, Open-File Report 82-942
The Farah Garan ancient mine is located at fat 17?41'00'' N., long 43?38'15'' E. in the southwestern part of the Kingdom of Saudi Arabia. Three diamond drill holes intersected base-metal sulfides, which are present both as conformable layers in Precambrian tuffaceous volcanic rocks and as fracture fillings, irregularly shaped masses,...
Data on selected deep wells in south Florida
C.A. Smith, Lauralee Lidz, F.W. Meyer
1982, Open-File Report 82-348
A data base of 870 deep wells was assembled for the south Florida part of the Southeastern Limestone Regional Aquifer Study. The data in this report are for wells in Broward, Collier , Dade, Hendry, Lee, Martin, Monroe, Palm Beach, and St. Lucie Counties. Data are compiled for water wells,...
A model for the simulation of flow of variable-density ground water in three dimensions under steady-state conditions
Emanuel Weiss
1982, Open-File Report 82-352
A computer program has been developed as part of the U.S. Geological Survey's national program of Regional Aquifer System Analysis (RASA) that generates input to ground-water flow models to enable them to simulate variable-density ground-water flow. Information required for the program's operation is: aquifer elevation, thickness, and ground-water density. Included...
A computer program for calculating relative-transmissivity input arrays to aid model calibration
Emanuel Weiss
1982, Open-File Report 82-447
A program is documented that calculates a transmissivity distribution for input to a digital ground-water flow model. Factors that are taken into account in the calculation are: aquifer thickness, ground-water viscosity and its dependence on temperature and dissolved solids, and permeability and its dependence on overburden pressure. Other factors affecting...
Geology of the Jabal Riah area, Kingdom of Saudi Arabia
J. D. Wells
1982, Open-File Report 82-1049
The Jabal Riah area is in the southern part of the Jibal al Hamdah quadrangle (lat 19?00'00'' to 19?07'S0'' N., long 45?37'30'' to 43?45'00' E.) in the southeastern Precambrian Shield, Asir Province, Kingdom of Saudi Arabia. The Jabal Mahanid group of ancient gold mines, which is part of the Jabal...
Hydrogeologic data from two wells at Myakka Head, Manatee County, Florida
W. C. Sinclair
1982, Open-File Report 81-1070
Well construction data, lithologic and geophysical logs, and water-quality data are presented for a deep (1,210 feet) well drilled at myakka Head, Manatee County, Florida. A shallow well (600 feet) was drilled at the same site. The wells were drilled as part of the Southwest Florida Water Management District 's...
Diatremes of the Hopi Buttes, Arizona; chemical and statistical analyses
K. J. Wenrich, J. F. Mascarenas
1982, Open-File Report 82-740
Lacustrine sediments deposited in maar lakes of the Hopi Buttes diatremes are hosts for uranium mineralization of as much as 1500 ppm. The monchiquites and limburgite turfs erupted from the diatremes are distinguished from normal alkalic basalts of the Colorado Plateau by their extreme silica undersaturation and high water, TiO2,...
Water-quality assessment of the American River, California
M.V. Shulters
1982, Open-File Report 82-763
Based on an analysis of water-quality data from more than 168 sites, the American River was found to be of overall good quality and suitable for all beneficial uses specified by the State of California, even though its natural condition has been altered by man 's activities in the basin....
Preliminary geological investigation of the Bir Hayzan diatomite deposit, Kingdom of Saudi Arabia, with a section on selected physical properties and implications for future geophysical exploration
J.W. Whitney, M. E. Gettings
1982, Open-File Report 82-1046
A 2.2-m-thick lake bed composed entirely of diatomite was found in the southwestern arm of the Nafud sand sea, about 67 km east of Tayma in northwestern Saudi Arabia. Its stratigraphic position above eolian sand and below a large barchanoid dune indicates deposition during an exceptional period of pluvial climate...
Simulated changes in water levels in the Minjur Aquifer, Riyadh area, Saudi Arabia
J. F. Williams, I.A. Sagaby
1982, Open-File Report 82-371
A two-dimensional finite-difference computer model of the Minjur aquifer in the Riyadh area of Saudi Arabia was developed to simulate and predict drawdown in an aquifer which, in 1979, supplied more than 80 percent of all water used in this capital area. The Minjur was modeled as a confined aquifer...