Estudio general de la region del Lago Titicaca evaluando en forma preliminar un sistema de analisis interactivo de imagenes multiespectrales
C.E. Brockmann, William D. Carter
1976, Revista tecnica de Yacimientos Petroliferos fiscales Bolivianos (5) 5-31
ERTS-1 digital data in the form of computer compatible tapes provide the geoscientist with an unusual opportunity to test the maximum flexibility of the satellite system using interactive computers, such as the General Electric Image 100 System. Approximately 9 hours of computer and operator time were used to analyze...
The survival of coho salmon (Oncorhynchus kisutch) eggs in two Wisconsin tributaries of Lake Michigan
James E. Cloern
1976, American Midland Naturalist (96) 451-461
Natural reproduction of coho salmon (Oncorhynchus kisutch) in two Wisconsin tributaries of Lake Michigan (Little Scarboro Creek, Kewaunee Co., and Fischer Creek, Manitowoc Co.), is limited by an unusually high mortality of eggs and preemergent embryos. Of approximately 1800 coho salmon eggs planted in six study redds (spawning beds) within...
Limnological data for the major streams in Chester County, Pennsylvania
Bruce W. Lium
1976, Report
Limnological data on major streams in Chester County, Pennsylvania are tabulated to provide a base line as to the present stream conditions. As land-use patterns change and further urbanization takes place, it is anticipated that these data will serve as a basis for comparison of conditions in the future. The...
Discussion: Ordovician and Silurian stratigraphy of northeastern Aroostook County, Maine
Louis Pavlides
1976, Memoir of the Geological Society of America (148) 53-55
No abstract available. ...
Geologic map of Arkansas
Boyd R. Haley, Ernest E. Glick, William V. Bush, Benjamin F. Clardy, Charles G. Stone, M.J. Woodward, Doy L. Zachry
1976, Report
No abstract available....
Deep evaporitic strata off New York and New Jersey-Evidence from interstitial water chemistry of drill cores
Frank T. Manheim, R.E. Hall
1976, Journal of Research of the U.S. Geological Survey (4) 697-702
No abstract available....
Ground-water resources of the White River Junction area, Vermont
Arthur L. Hodges Jr., David Butterfield
1976, Report
A study of the ground-water resources of the White River Junction area, Windsor County, Vermont, was begun in 1969 as part of a cooperative program between the Vermont Department of Water Resources and the U.S. Geological Survey. The purpose of the study was to provide technical appraisal of potential sources...
Ground-water resources of the Barre-Montpelier area, Vermont
Arthur L. Hodges Jr., David Butterfield
1976, Report
A study of the ground-water resources of the Barre - Montpelier area (fig. 1), Washington County, was begun in 1968 as part of a cooperative program between the Vermont Department of Water Resources and the U.S. Geological Survey. The purpose of the study is to provide technical appraisal of potential...
Hydrogeochemistry of Bermuda: A case history of ground-water diagenesis of biocalcarenites
L.N. Plummer, H. L. Vacher, F.T. MacKenzie, O.P. Bricker, L.S. Land
1976, Geological Society of America Bulletin (87) 1301-1316
Bermuda is composed of relatively young skeletal limestones currently undergoing diagenesis by the ground water passing through them. The saturated zone consists of separate fresh-water bodies laterally surrounded and underlain by extensive brackish aureoles, in which the meteoric water is mixed with sea water. The meteoric water enters the aquifer...
Trace-element variations at Summer Coon volcano, San Juan Mountains, Colorado, and the origin of continental-interior andesite
Robert A. Zielinski, Peter W. Lipman
1976, GSA Bulletin (87) 1477-1485
The Oligocene Summer Coon center, an eroded continental-interior volcano of the eastern San Juan Mountains, Colorado, was the source of magmas ranging in composition from basaltic andesite to rhyolite. Previous Pb and Sr isotope studies indicate derivation of the magmas from an isotopically homogeneous source. This study presents new data...
Preliminary report on the 17th cruise of the Dimitri Mendeleev
E. H. Brown, R. G. Coleman, L.M. Echiverria, R.L. Fisher, W. P. Irwin
1976, Eos, Transactions, American Geophysical Union (57) 1027-1027
No abstract available....
Heat-flow data and their relation to observed geothermal phenomena near Klamath Falls, Oregon
J.H. Sass, Edward A. Sammel
1976, Journal of Geophysical Research (81) 4863-4868
Two holes were drilled to depths of about 180 m in the Lower Klamath Lake basin south of Klamath Falls, Oregon, to obtain heat flow data and to provide estimates of the thermal conductivity of the valley fill. Twenty-nine thermal conductivity determinations on eight cores give a mean conductivity of...
Uranium resource assessment in the United States
R. W. Schnabel, W.I. Finch
1976, Conference Paper, First IIASA Conference on Energy Resources
Uranium is a ubiquitous element-- a little is found in nearly every natural occurring materials, and it is concentrated in many different geologic environments. Thus, uranium differs markedly from the fossil fuels both in its occurrence and how its resources can be assessed. On the one hand uranium behaves like...
Preseismic and coseismic deformation associated with the Hollister, California, earthquake of November 28, 1974
James C. Savage, Mary Ann Spieth, W.H. Prescott
1976, Journal of Geophysical Research (81) 3567-3574
The epicenter of the Hollister earthquake (ML = 5.1) of November 28, 1974, is located near the center of an 81‐line trilateration network which has been surveyed annually since 1971. Five lines in the neighborhood of the epicenter were surveyed just 2 days before the earthquake, and two other lines nearby...
Strain accumulation on the San Andreas Fault near Palmdale, California
W.H. Prescott, James C. Savage
1976, Journal of Geophysical Research B: Solid Earth (81) 4901-4908
Precise distance measurements of a 10×25 km 15‐station trilateration network that spans the San Andreas fault west of Palmdale, California, have been repeated annually in the period 1971–1975. The network appears to be deforming under simple uniform tensor shear of about 0.21±0.03 μstrain/yr with the direction of maximum right‐lateral shear...
Canine tooth wear in captive big brown bats (Eptesicus fuscus)
D. R. Clark Jr.
1976, Journal of Mammalogy (57) 778-780
No abstract available. ...
Industrial glass beads in beach sand from Chesapeake Bay, Maryland
R. B. Finkelman, C. Milton, R.R. Larson
1976, Chesapeake Science (17) 310-310
No abstract available. ...
Fat content in migratory central Arizona Brazilian free-tailed bats, Tadarida brasiliensis (Molossidae)
Thomas J. O'Shea
1976, Southwestern Naturalist (21) 321-326
Fat content of migratory Tadarida brasiliensis was determined during the spring, summer and fall of 1972 in the Verde Valley of Arizona. Fat indices were highest in March arrivals, generally declined throughout the summer, and were lowest in September. In both 1972 and 1973 bats had arrived at...
Field recalibration of radiometers by using the shading technique
Alan P. Jackman, Richard D. Noble
1976, Journal of Research of the U.S. Geological Survey (4) 757-764
Use of radiometers to measure radiant energy components in energy budgets is widespread in water-resources studies. Previous experience has shown that readings of radiometers may contain substantial errors. These errors may be due to deterioration of the instrument during use and (or) inaccurate initial calibration. Both of these errors may...
Liquid scintillation counting of filtered algae in primary production studies
Doyle W. Stephens
1976, Journal of Research of the U.S. Geological Survey (4) 753-756
A technique for preparing phytoplankton samples for liquid scintillation counting and standardization has been developed. It consists of digestion of the carbon-14 labeled algae on small, inert filters coupled with a filter standardization and channels ratio method of efficiency determination. The technique is an alternative to many currently used methods...
Classification of organic solutes in water by using macroreticular resins
J.A. Leenheer, Edward W. D. Huffman Jr.
1976, Journal of Research of the U.S. Geological Survey (4) 737-751
A series of macroreticular resin adsorbents was evaluated for ability to extract and fractionate organic solutes found in natural waters. Studies with organic solute standards and natural water samples lead to the development of dissolved organic carbon (DOC) fractionation analysis whereby the DOC is concentrated and fractionated by macroreticular...
Relations among surficial materials, light intensity, and sycamore-seed germination along the Potomac River near Washington, D.C.
Robert S. Sigafoos
1976, Journal of Research of the U.S. Geological Survey (4) 733-736
Seed of sycamore, a common tree on river flood plains, germinate in mineral soil exposed to high light intensities. Germination rates are low on surfaces covered with leaf litter, and seedlings die when shaded by closely spaced herbaceous plants. All germination rates were higher when seed were kept moist....
Use of thermal-infrared imagery in ground-water investigations, northwestern Montana
A. J. Boettcher, R. M. Haralick, C. A. Paul, Norman Smothers
1976, Journal of Research of the U.S. Geological Survey (4) 727-732
Thermal-infrared imagery was used to locate ground-water inflow along a 50-mile (80-kilometre) reach of the Kootenai River and Lake Koocanusa and a 55-mi (88-km) reach of the Clark Fork of the Columbia River in northwestern Montana and northeastern Idaho. The imagery confirmed that measured streamflow gains below Noxon Rapids Dam,...
Microprobe study of olivine chromitites of the Goodnews Bay ultramafic complex, Alaska, and the occurrence of platinum
M. L. Bird, A. L. Clark
1976, Journal of Research of the U.S. Geological Survey (4) 717-725
Electron-microprobe analyses of the dunite and olivine chromitite of the ultramaflc complex at Goodnews Bay, Alaska, show that the chromite contains more ferrous and ferric iron than is found in chromite from alpine or stratiform complexes. The iron-magnesium distribution coefficients between chromite and olivine demonstrate that more ferrous iron...
Brannerite from the Penn Haven Junction uranium occurrence, Carbon County, Pennsylvania
R. B. Finkelman, Harry Klemic
1976, Journal of Research of the U.S. Geological Survey (4) 715-716
Thorium-free brannerite has been identified in Upper Devonian uraniferous sandstone from Penn Haven Junction, Carbon County, Pa. The brannerite was located by a variation of the "Lexan" technique and is associated with galena, uraninite, and clausthalite. The angular thorium-free nature of the brannerite suggests that it formed by metamorphism of...
