Regional geohydrology of the San Juan hydrologic basin of New Mexico, Colorado, Arizona, and Utah
Maurice E. Cooley, William G. Weist
1979, Open-File Report 79-1498
The San Juan Basin in the southeastern part of the Colorado Plateau, southwest of the San Juan Mountains, broadly includes the Acoma and Gallup Sags in its southern part and the small Chama Basin in its northeastern part. Regionally, the water-yielding strata (aquifers) dip inward toward the center of San...
The appearance and distribution of the gas-hydrate reflector off the southeastern United States.
Charles K. Paull, William P. Dillon
1979, Open-File Report 80-88
No abstract available....
Djurleite (Cu1.94S) and low chalcocite (Cu2S): New crystal structure studies
H. T. Evans Jr.
1979, Science (203) 356-358
Additional x-ray structure studies on low chalcocite generally confirm the previously reported structure but show that either disorder is present or the true space group is not P21/c but Pc, four of the 96 copper atoms in the monoclinic unit cell taking on twofold (linear) coordination. The crystal structure of...
Frontier Formation and equivalent rocks in eastern Wyoming
E. Allen Merewether, W. A. Cobban, E.T. Cavanaugh
1979, Mountain Geologist (16) 67-95
No abstract available....
Late Jurassic Independence dike swarm in eastern California
J.-H. Chen, James G. Moore
1979, Geology (7) 129-133
The Independence dike swarm in eastern California, more than 250 km long, extends from the eastern Sierra Nevada and Inyo Mountains through the Argus Range, Alabama Hills, and Spangler Hills to the Garlock fault, where it is offset 64 km before continuing into the Mojave Desert. The dike swarm includes...
Regional deformation of the Sierra Nevada, California, on conjugate microfault sets
J. P. Lockwood, James G. Moore
1979, Journal of Geophysical Research B: Solid Earth (84) 6041-6049
Strike slip microfaults are pervasive throughout the granitic rocks of the eastern Sierra Nevada. Offsets typically range from less than a millimeter to several tens of centimeters but exceed 100 m in some places. The spacing between microfaults varies from a few tens of centimeters to a few tens of...
Emplacement temperatures of unsorted and unstratified deposits of volcanic rock debris as determined by paleomagnetic techniques
Richard P. Hoblitt, Karl S. Kellogg
1979, GSA Bulletin (90) 633-642
Unsorted and unstratified deposits of volcanic rock debris typically flank recently active stratovolcanoes. It is often difficult, using standard geologic procedures, to establish whether a particular deposit was emplaced by a pyroclastic flow, lahar, rock avalanche, or glacier. Determination of the emplacement temperatures of clasts contained in the deposit aids...
Genesis of ore deposits in the San Juan Volcanic Field, Southwestern Colorado-lead isotope evidence
B. R. Doe, T. A. Steven, M.H. Delevaux, J. S. Stacey, P. W. Lipman, F. S. Fisher
1979, Economic Geology (74) 1-26
In the San Juan volcanic area of southwestern Colorado, the isotopic composition of lead in ores and ore prospects of Cenozoic age ranges widely: 17.72 to 21.13 for 206Pb/ 204Pb; 15.50 to 15.81 for 207Pb/ 204Pb; and 37.21 to 38 for 208Pb/ 204Pb. Examination of the lead isotope data indicates that once deposition of lead minerals...
Hydrologic and geologic data from the Upper East Coast Planning Area, southeast Florida
Wesley L. Miller
1979, Open-File Report 79-1543
The Upper East Coast Planning Area, one of five designated planning areas in the South Florida Water Management District, consists of St. Lucie, Martin, and eastern Okeechobee Counties. Existing hydrologic and geologic data have been compiled as a base for additional investigations to determine the water-bearing characteristics of the shallow...
Hydrologic conditions in Broward County, Florida, 1976
T.R. Beaven
1979, Open-File Report 79-1258
During the 1976 water year, rainfall was 3.6 percent below average in Broward County, Fla. Water levels in the Pompano Beach and Dixie well fields were lower during the peak of the 1976 dry season than the peak of the record low dry season in 1971. Flow in the major...
Lakes of Oregon, Volume 6: Douglas County
Joseph F. Rinella
1979, Report
An inventory of lakes and reservoirs in Oregon is useful in evaluating the surface-water supply of the State and in providing answers to questions about Oregon's lakes. Much of the information on lakes and reservoirs previously collected by Federal and State agencies has never been published. Those data were compiled...
Collecting biologic and geologic specimens in south Florida
Eugene A. Shinn
1979, Report
Geologic map of Colorado
Ogden Tweto
1979, Report
No abstract available....
Nonparametric estimation of population density for line transect sampling using FOURIER series
B.R. Crain, K.P. Burnham, David R. Anderson, J.L. Lake
1979, Biometrical Journal (21) 731-748
A nonparametric, robust density estimation method is explored for the analysis of right-angle distances from a transect line to the objects sighted. The method is based on the FOURIER series expansion of a probability density function over an interval. With only mild assumptions, a general population density estimator of wide...
Myths concerning instream flows: a background to understanding instream uses
C.B. Stalnaker
1979, Report, Elements in Negotiating Stream Flows Associated with Federal Projects: Instream Flow Information Paper No. 9
No abstract available....
The use of habitat structure preferenda for establishing flow regimes necessary for maintenance of fish habitat
Clair B. Stalnaker
1979, Book chapter, The Ecology of Regulated Streams
The pursuit of simplicity in the complex management of instream and out-of-stream water uses very early led to the minimum, or “base,” flow concept and the myth that a consistent methodology could be used to establish the desired minimum flow. Such a single flow value has not proven to be...
CEL, index to current earthquake literature
Water Resources Division, U.S. Geological Survey
1979, Report
No abstract available....
Proposed mining and reclamation plan, Pearl Mine, Big Horn County, Montana: Draft environmental statement
U.S. Geological Survey, Montana Department of State Lands
1979, Report
No abstract available....
Digital image processing system For Landsat 3
George Harris Jr.
1979, Conference Paper, Proceedings volume 0183, Space Optics II
The Department of Interior (DOI) and the National Aeronautics and Space Administration (NASA) have entered into a joint program to provide a digital image processing system in support of the Landsat 3 mission. NASA will provide the data reception and pre-processing facilities, while the DOI provides the production image processing...
Effects of aldrin exposure on snow geese in Texas rice fields
Edward L. Flickinger
1979, Journal of Wildlife Management (43) 94-101
In 1972 and 1974, 112 dead or moribund snow geese (Chen c. caerulescens), mostly immature white-phase males, were found in a study area on the Garwood Prairie, Texas. Dying geese were observed within 2 days after rice fields planted with aldrin-treated seed were flooded by heavy tains6n 21 March 1972...
Primary feather molt of adult mourning doves in North and South Carolina
G.H. Haas, S.R. Amend
1979, Journal of Wildlife Management (43) 202-207
Examination of 8,141 adult mourning doves (Zenaida macroura) in North and South Carolina revealed that substantial numbers complete primary feather molt in September. Adult mourning doves shed primaries at the rate of 1 per 14 days. No difference was found in this rate between sexes or among years, 1969-74. The...
Contributions to the mammalogy of Chile
Ronald H. Pine, Sterling D. Miller, Mel L. Schamberger
1979, Mammalia (43) 339-376
Collections of mammals were made during more than three years of biological investigations in Chile sponsored by the Corporación Nacional Forestal under the aegis of the Peace Corps (Smithsonian Environmental Program). Genera and species hitherto unreported for that country were taken and many useful data concerning distributional patterns of...
An improved method of censusing deer in deciduous-coniferous forests
T.J. Floyd, L.D. Mech, M.E. Nelson
1979, The Journal of Wildlife Management (43) 258-261
Aerial censusing has been used to determine densities of many large mammals, including deer (Odocoileus virginianus) in agricultural areas or deciduous forests (Saugstad 1942, Morse 1946, Petrides 1953, Sanderson 1953, Berner pers. comm.). However, observability of deer from the air remains a problem in northern coniferous forests. LeResche and...
The analysis of lands unsuitable for mining
John M. Bartholow
1979, Report, Proceedings of the Rapid Assessment Methodology
No abstract available....
Draft environmental statement, proposed Colstrip project, Rosebud County, Montana
James R. Balsley
1979, Report
No abstract available....
