Gold abundance in igneous rocks; bearing on gold mineralization
Robert I. Tilling, David Gottfried, Jack J. Rowe
1973, Economic Geology (68) 168-186
Review of quantitative data, restricted range in gold content (rarely more than 10 ppb, generally below 5 ppb), mafic rocks have more, so do early crystallizing minerals, no use in exploration, factors other than concentration determine mineralization; examples...
Analysis of radiotracking data using digitized habitat maps
D.S. Gilmer, S.E. Miller, L.M. Cowardin
1973, Journal of Wildlife Management (37) 404-409
A method is described that provides a rapid and accurate analysis of habitat used by radio-equipped animals. The digitizer (basically an X-Y plotter in reverse) converts maps into digital form by describing each habitat unit as a polygon that closely approximates the actual shape of the unit. The coordinates of...
Hydraulics of sheetlike solution cavities
Gerald K. Moore
1973, Groundwater (11) 4-11
The sheetlike solution cavities that supply water to most wells in central Tennessee are 100 to 2,500 feet wide and less than 0.2 inch high. These dimensions have a scale similar to those in Hele-Shaw models. Both logical and mathematical evidence indicate laminar ground-water flow, except close to pumping wells....
Mapping of the 1973 Mississippi River floods from the Earth Resources Technology Satellite (ERTS)
Morris Deutsch, F. H. Ruggles, Philip Guss, Edward Yost
1973, Conference Paper, Remote sensing and water resources management
On March 31, and May 4 and 5, 1973, the first Earth Resources Technology Satellite (ERTS-1) obtained multispectral scanner imagery over the Mississippi River below St. Louis, Missouri. The river was in flood, and the ERTS data provided the first opportunity for regional synoptic mapping of the extent of flooding...
Pen-reared fulvous tree ducks used in movement studies of wild populations
Edward L. Flickinger, Kirk A. King, O. Heyland
1973, Journal of Wildlife Management (37) 171-175
To obtain movement data on wild fulvous tree ducks (Dendrocygna bicolor) 165 immature pen-reared fulvous tree ducks were color-marked and released in three southeast Texas counties in July October 1969/70. Nine (5 percent) of the marked birds were recovered from 3 days to 9 months after release, and an additional...
Fluid-inclusion studies of the fluorspar and gold deposits, Jamestown district, Colorado
J. Thomas Nash, C. G. Cunningham
1973, Economic Geology (68) 1247-1262
The Jamestown district, Boulder County, Colorado, is a major producer of fluorspar; prior to 1940, gold, gold-telluride, and lead-silver ores were mined. Fluorite occurs as a primary mineral in phases of the composite sodic granite stock at Jamestown and in breccia zones, stockworks, and pipe-shaped bodies in and adjacent to...
Basement ages and basement depths in the eastern equatorial pacific from Deep Sea Drilling Project Legs 5, 8, 9, and 16
T. H. Van Andel, David Bukry
1973, GSA Bulletin (84) 2361-2379
Recent literature contains numerous references to basement ages and basement depths determined by the Deep Sea Drilling Project. The data are derived from a variety of sources, many of them inadequately documented or preliminary, and are not uncommonly inaccurate or conflicting. In this paper we present tabulations of basement ages...
Stages in the P-T path of ascending basalt magma: an example from San Quintin, Baja California
Charles R. Bacon
1973, Contributions to Mineralogy and Petrology (41) 1-22
Late Pleistocene or Recent lavas from San Quintin, Baja California are basanitoids and alkali basalts. The surface quench temperatures of the lavas average 1 005° C with log fO2">f<span id="MathJax-Span-7"...
Hydraulic sand-model studies of miscible-fluid flow
J.M. Cahill
1973, Journal of Research of the U.S. Geological Survey (1) 243-250
Hydraulic sand models are useful physical tools in the investigation of the transition zone that occurs between salt and fresh ground water in coastal aquifers. Such models are used to demonstrate the effects of transport mechanisms that influence the dynamic behavior and the shape of the transition zone. The techniques employed in obtaining in-place measurements...
Can satellite photography contribute to topographic mapping?
Frederick J. Doyle
1973, Journal of Research of the U.S. Geological Survey (1) 315-325
Photographs taken on early space missions, in the Gemini-Apollo series, demonstrated the usefulness of the long view for cartography despite acknowledged shortcomings. Later developments, such as ERTS and Skylab, will provide far more data about Earth, but mostly in planimetric form. The third dimension, height, which makes the map representation topographic, is not easy to...
Summary of ground-water hydrological data in Michigan for 1971
G.C. Huffman, T. Thompson
1973, Report
No abstract available....
Ground water in perspective
R. L. Nace
1973, JAWRA (9) 18-24
Owing to their enormous capacity, ground‐water reservoirs are at least equal in importance to the ground water itself. As regulators of water movement in the hydrological cycle, these reservoirs surpass all lakes combined, natural and manmade. While many aquifers are not well understood, data on many others are adequate for...
Annual compilation and analysis of hydrologic data for Pin Oak Creek, Trinity River basin, Texas, 1971
B.B. Hampton
1973, Report
The U.S. Soil Conservation Service is actively engaged in the installation of flood- and soil-erosion reducing measures in Texas under the authority of "The Flood Control Act of 1936 and 1944" and "Watershed Protection and Flood Prevention Act" (Public Law 566), as amended. The Soil Conservation Service has found a...
Lake Okeechobee seepage monitoring network
Donald J. McKenzie
1973, Open-File Report FL 73-018
This report summarizes the data collected at the five original monitoring sites along the south shore of Lake Okeechobee from January 29, 1970 to June 28, 1972. In order to use the hydrographs in this report to full advantage, they should be studied in conjunction with Meyer's graphs and text...
Lakes of Oregon, Volume 1: Clatsop, Columbia, and Tillamook Counties
R.B. Sanderson, M.V. Shulters, D. A. Curtiss
1973, Report
An inventory of lakes and reservoirs in Oregon has been needed for many years. Records have long been collected throughout the State to assess the quantity and quality of water from streams, but few data have been collected on water stored in Oregon's lakes and reservoirs. Such data are essential...
Value and validity of earth resources observations from space
Charles J. Robinove
1973, Hydrological Sciences Bulletin (18) 63-67
Observations of the earth from space can provide overall repetitive views in various regions of the electromagnetic spectrum. Data from such surveys can be used as the basis for more detailed observations from aircraft and on the ground to guide resource exploration, development, and conservation activities.The value of earth resource...
Water resources data for Iowa, water year 1972
U.S. Geological Survey
1973, Report
No abstract available....
Ground-water data in Santa Barbara and southern San Luis Obispo counties, California
Charles Edwin Lamb, Mary J. Mermod
1973, Report
No abstract available....
Hydrologic data for 1971, Broward County, Florida
H.W. Bearden
1973, Open-File Report FL 73-016
No abstract available....
Ground-water data for Michigan
Water Resources Division, U.S. Geological Survey
1973, Report, Geological Survey (U.S.). Water Resources Division: Summary of ground-water hydrologic data in Michigan
No abstract available....
Mathematical simulation of temperatures in deep impoundments: verification tests of the Water Resources Engineers, Inc. model - Horsetooth and Flaming Gorge Reservoirs
D.L. King, Jim J. Sartoris
1973, Report
Successful use of predictive mathematical models requires verification of the accuracy of the models by applying them to existing situations where the prediction can be compared with reality. A Corps of Engineers' modification of a deep reservoir thermal stratification model developed by Water Resources Engineers, Inc., was applied to...
Selected storm events in 5-minute increments from Missouri rainfall stations at Kansas City, St. Louis, Springfield, and Columbia, Mo., for the period 1892-1970
Leland D. Hauth
1973, Report
The purpose of this report is to present daily precipitation (see table A) and continual incremental (5-minute duration) rainfall data through entire storm periods (see table B) at four of the longest first-order National Weather Service station records in Missouri. These basic data can be used in model studies, unit-hydrographic...
Evaluating the reliability of specific-yield determinations
Ronald L. Hanson
1973, Journal of Research of the U.S. Geological Survey (1) 371-376
The specific yield of the alluvial aquifer in the Gila River flood plain in southeastern Arizona has been determined using two methods of analysis - the time-drawdown method and the soil-moisture-content method. Time-drawdown data measured at 17 observation wells during a 3.5-day aquifer test define an average apparent specific yield of 0.13. Soil-moisture-content data...
A preliminary classification of wetland plant communities in north-central Minnesota
L.M. Cowardin, Douglas H. Johnson
1973, Special Scientific Report - Wildlife 168
A classification of wetland plant communities was developed for a study area in north-central Minnesota in order to analyze data on waterfowl use of habitat that were gathered by radio telemetry. The classification employs features of several earlier classifications in addition to new classes for bogs and lakeshore communities. Brief...
Annual compilation and analysis of hydrologic data for urban studies in the Austin, Texas Metropolitan Area, 1971
F.H. Tovar
1973, Report
The U.S. Geological Survey, in cooperation with the Texas Water Development Board, began hydrologic studies in the Austin urban area in 1954. The objectives of this project are as follows: 1. To determine the effects of progressive urbanization on infiltration, rates of peak discharge, and rainfall-runoff...
