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Page 1048, results 26176 - 26200

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Origin of marcasite and its implications regarding the genesis of roll-front uranium deposits
Martin B. Goldhaber, Richard L. Reynolds
1979, Open-File Report 79-1696
Study of five roll-type uranium deposits (three in Texas and two in Wyoming) has resulted in the recognition of ore-stage marcasite in each deposit. Ore-stage marcasite is identified by its close association with uranium- and vanadium-bearing phases in the ore zones; by its close association with ferroselite at and near...
Analysis of picric acid in water by high-performance liquid chromatography
D.F. Goerlitz
1979, Open-File Report 79-207
Methods for the determination of picric acid (2,4,6, trinitrophenol) in water employing high-performance liquid chromatography are presented. Ion-pair chromatography under an isocratic condition is performed on a reverse-phase column. Picric acid can be determined directly in water at a lower detection limit of 10 micrograms per liter. By use of...
Selected streamflow data for the Delaware River basin
Robert D. Schopp, Brian D. Gillespie
1979, Open-File Report 79-347
Selected streamflow data for the Delaware River basin are given in this report. Runoff-precipitation data covering the period 1941-70 are compiled for 28 selected subbasins. Low-flow frequency curves for four main-stem Delaware River sites are also given. For Delaware River at Montague and Trenton, New Jersey, monthly comparative duration curves...
Borehole gravity surveys in native-sulfur deposits, Culberson and Pecos counties, Texas
James W. Schmoker, Stephen L. Robbins
1979, Open-File Report 79-361
Native-sulfur deposits in west Texas are heterogeneous, with sulfur content and formation properties varying significantly over small vertical and horizontal distances. The zone of recovery of the Frasch process extends tens or even hundreds of feet around each recovery well, but the investigation depth of most wire-line logs is measured...
Selected geologic information from drill holes in southeastern Iowa
Daniel J. Gockel
1979, Open-File Report 79-415
This report presents selected geologic information derived from wells in a 22-county area of southeastern Iowa. The information was extracted from the Automatic Data Processing (ADP) geologic file of the Iowa and U.S. Geological Surveys. The data presented include location, well identification number, and elevation of the well sites; depth and stratigraphic classification of...
Reconnaissance geology of the Wadi Shuqub Quadrangle, sheet 20/41 A, Kingdom of Saudi Arabia
Robert C. Greene, Louis Gonzalez
1979, Open-File Report 79-1353
The Wadi Shuqub quadrangle (sheet 20/41 A) lies in the high mountainous part of the Hijaz plateau in west-central Saudi Arabia. The quadrangle is underlain chiefly by Precambrian layered metasedimentary and metavolcanic rocks that are intruded by plutons ranging in composition from gabbroic to granitic. The metasedimentary rocks include quartzite,...
Preliminary data for Madison Limestone test well 3, NW 1/4 Sec. 35. T. 2 N., R. 27 E., Yellowstone County, Montana
Richard K. Blankennagel, L.W. Howells, W. R. Miller, C. V. Hansen
1979, Open-File Report 79-745
This report provides preliminary data for Madison Limestone test well 3 in Yellowstone County, Mont., including test-well history , geology of the test well, hydrologic testing, and geochemistry. It also discusses the preliminary results and future testing. The test well was drilled as part of the study to determine the...
Design of a network for monitoring ground-water quality in Minnesota
Marc F. Hult
1979, Open-File Report 79-1164
A network for monitoring the quality of water in the 13 principal aquifers in Minnesota has been designed and more than 400 wells and springs selected for sampling. The network organization includes four major elements; (1) point sampling, (2) point monitoring, (3) regional monitoring, and (4) site-specific monitoring. These elements...