Cleavage strain in the Variscan fold belt, County Cork, Ireland, estimated from stretched arsenopyrite rosettes
M. Ford, C.C. Ferguson
1985, Journal of Structural Geology (7) 217-223
In south-west Ireland, hydrothermally formed arsenopyrite crystals in a Devonian mudstone have responded to Variscan deformation by brittle extension fracture and fragment separation. The interfragment gaps and terminal extension zones of each crystal are infilled with fibrous quartz. Stretches within the...
Well bore breakouts and in situ stress
Mark D. Zoback, Daniel Moos, Larry Mastin, Roger N. Anderson
1985, Journal of Geophysical Research (90) 5523-5530
The detailed cross-sectional shape of stress induced well bore breakouts has been studied using specially processed ultrasonic borehole televiewer data. Breakout shapes are shown for a variety of rock types and introduce a simple elastic failure model which explains many features of the observations. Both the observations and calculations indicate...
Temporal fluctuations of silver, copper and zinc in the bivalve Macoma balthica at five stations in South San Francisco Bay
Samuel N. Luoma, Daniel Cain, C. Johansson
1985, Hydrobiologia (129) 109-120
Concentrations of Cu, Ag and Zn were measured in the soft tissues of the estuarine bivalve Macoma balthica in South San Francisco Bay at near-monthly intervals for periods of two to three years at four stations, and eight years at a metal-enriched station. The amplitude and frequency of fluctuations differed...
Distribution of volatile organic compounds in a New Jersey coastal plain aquifer system
T. V. Fusillo, J. J. Hochreiter Jr., D. G. Lord
1985, Groundwater (23) 354-359
Samples for analysis of volatile organic compounds were collected from 315 wells in the Potomac-Raritan-Magothy aquifer system in southwestern New Jersey and a small adjacent area in Pennsylvania during 1980–82. Volatile organic compounds were detected in all three aquifer units of the Potomac-Raritan-Magothy aquifer...
Determination of elastic wave velocity and relative hypocenter locations using refracted waves. I. Methodology
Kaye M. Shedlock, Steven W. Roecker
1985, Bulletin of the Seismological Society of America (75) 415-426
An arrival time difference method utilizing refracted arrivals from earthquakes in a homogeneous, layered earth model has been developed for the simultaneous determination of near-source (in situ) velocity and relative locations of earthquakes. The method is particularly applicable when analyzing data from arrays in which most of the recording stations...
Effects of the 1983 Coalinga, California, earthquake on creep along the San Andreas fault
Gerald M. Mavko, Sandra Schulz, Beth D. Brown
1985, Bulletin of the Seismological Society of America (75) 475-489
The M//L approximately equals 6. 5 earthquake that occurred near Coalinga, California, on May 2, 1983 induced changes in near-surface fault slip along the San Andreas fault. Coseismic steps were observed by creepmeters along a 200-km section of the San Andreas. some of the larger aftershocks induced additional steps, both...
Airfall tuff in the Browns Park Formation, northwestern Colorado and northeastern Utah.
S. J. Luft
1985, Mountain Geologist (22) 110-127
Bedded airfall tuffs, mainly rhyolitic in composition and locally very thick, occur throughout the Browns Park Formation (upper Oligocene to upper Miocene) in northwestern Colorado and northeasternmost Utah. They have received only cursory attention other than for the purpose of radiometric dating. The present writer began study of the tuffs...
Rainbow smelt (Osmerus mordax) as predators on young bloaters (Coregonus hoyi) in Lake Michigan
Ralph M. Stedman, Ray L. Argyle
1985, Journal of Great Lakes Research (11) 40-42
Examination of the stomach contents of rainbow smelt caught in bottom trawls in Lake Michigan during mid October, 1982, revealed that of 267 rainbow smelt (Osmerus mordax) with food in their stomachs, 56% (150) had eaten young-of-the-year fish. Nearly 15% of the prey fish consumed were bloaters (Coregonus hoyi), 21 %...
Viral diseases of fish: first report of carp pox in golden ide (Leuciscus idus) in North America
P. E. McAllister, B. C. Lidgerding, R. L. Herman, L.C. Hoyer, J. Hankins
1985, Journal of Wildlife Diseases (21) 199-204
Carp pox, a putative viral disease exotic to North America, occurred in golden ide 1 yr after the fish were imported into the United States from the Federal Republic of Germany. The raised, white, plaque-like lesions, which occurred on about 5% of the...
Trace element content of gossans at four mines in the West Shasta massive sulfide district
R. F. Sanzolone, J. A. Domenico
1985, Economic Geology (80) 2206-2212
We evaluated the trace element content of gossans at four mines in the West Shasta Cu-Zn mining district in California. We found little difference in trace element content between the chipped rock rind and whole-rock gossan samples. Gossans derived from disseminated sulfides were found to have a lower trace element...
Potentiometric map of the Eutaw-McShan aquifer in northeastern Mississippi, fall 1982
Daphne Darden
1985, Water-Resources Investigations Report 85-4042
No abstract available....
General P, type-I S, and type-II S waves in anelastic solids; inhomogeneous wave fields in low-loss solids
Roger D. Borcherdt, Leif Wennerberg
1985, Bulletin of the Seismological Society of America (75) 1729-1763
The physical characteristics for general plane-wave radiation fields in an arbitrary linear viscoelastic solid are derived. Expressions for the characteristics of inhomogeneous wave fields, derived in terms of those for homogeneous fields, are utilized to specify the characteristics and a set of reference curves for general P and S wave fields in arbitrary viscoelastic...
Classification of wetlands and deepwater habitats of the United States
L.M. Cowardin, V. Carter, F.C. Golet, E.T. LaRoe
1985, FWS/OBS 79/31
This classification, to be used in a new inventory of wetlands and deepwater habitats of the United States, is intended to describe ecological taxa, arrange them in a system useful to resource managers, furnish units for mapping, and provide uniformity of concepts and terms. Wetlands are defined by plants (hydrophytes),...
Seawater acclimation of premigratory (presmolt) fall chinook salmon: a possible new management strategy?
R. W. Gould, Aldo N. Palmisano, S.D. Smith, C.V.W. Mahnken, W.S. Zaugg, E.F. Prentice
1985, Technical Report 27
No abstract available at this time...
Empirical estimates of cumulative refraction errors associated with procedurally constrained levelings based on the Gaithersburg- Tucson refraction tests of the National Geodetic Survey
R. O. Castle, T.D. Gilmore, R. K. Mark, R.H. Shaw
1985, Geophysical Research Letters (12) 239-242
Analyses of results of the National Geodetic Survey's leveling refraction tests indicate that the standard deviation about the mean (σ) for high-scale minus low-scale rod readings closely correlates with measured refraction error. Use of this relation in conjunction with values for σ obtained from routinely constrained...
Salmonid whirling disease: serological cross-reactivity confirms myxosporidian-actinosporean unity
M.E. Markiw
1985, Research Information Bulletin 85-74
No abstract available at this time...
Investigation of selected streamflow characteristics of the Alabama River upstream from Selma, Alabama
G. H. Nelson Jr., C. O. Ming, W. L. Psinakis
1985, Water-Resources Investigations Report 85-4055
Available data for floods in the vicinity of Montgomery since the late 1800 's indicate that the flood of 1886 is the highest since settlement of the area in 1814. Profiles for floods in 1948, 1961, 1976, and 1979 were defined using floodmarks and recorded peak stages at gaging stations...
Terrestrial vs. marine depositional model—A new assessment of subsurface Lower Pennsylvanian rocks of southwestern Virginia
C. L. Rice
1985, Geology (13) 786-789
A reinterpretation of the origin of subsurface rocks in southwestern Virginia and southeastern Kentucky suggests that, contrary to commonly accepted ideas, the Mississippian-Pennsylvanian Systemic boundary is an unconformity and the Lower Pennsylvanian quartz arenite sequences were deposited in a fluvial environment. Because Pennsylvanian...
Land subsidence: Its impacts and costs in the U.S
T.L. Holzer
1985, Underground Space (9) 260
[No abstract available]...
Mineral-water reactions in metamorphism and volcanism
I. Barnes
1985, Chemical Geology (49) 21-29
Low-temperature (120??C and less) metamorphism of graywacke, granite and andesite yields zeolites and precursor gels by reaction with fresh water but low-greenschist facies by reaction with salt (sea)water. ?? 1985....
Validation of an automated fluorescein method for determining bromide in water
M. J. Fishman, L.J. Schroder, L.C. Friedman
1985, Water Research (19) 497-501
Surface, atmospheric precipitation and deionized water samples were spiked with ??g l-1 concentrations of bromide, and the solutions stored in polyethylene and polytetrafluoroethylene bottles. Bromide was determined periodically for 30 days. Automated fluorescein and ion chromatography methods were used to determine bromide in these prepared samples. Analysis of the data...
Analysis of low levels of rare earths by radiochemical neutron activation analysis
G.A. Wandless, J. W. Morgan
1985, Journal of Radioanalytical and Nuclear Chemistry Articles (92) 273-282
A procedure for the radiochemical neutron-activation analysis for the rare earth elements (REE) involves the separation of the REE as a group by rapid ion-exchange methods and determination of yields by reactivation or by energy dispersive X-ray fluorescence (EDXRF) spectrometry. The U. S. Geological Survey (USGS) standard rocks, BCR-1 and...
Think Deep: Computer Methods and the Subsurface: Papers presented at the 12th Annual Geochautauqua
J.C. Davis
1985, Journal of the International Association for Mathematical Geology (17) 333-334
[No abstract available]...
MAJOR SOURCE OF SIDE-LOOKING AIRBORNE RADAR IMAGERY FOR RESEARCH AND EXPLORATION: THE U. S. GEOLOGICAL SURVEY.
Allan N. Kover, John Edwin Jones
Carver Keith R., editor(s)
1985, Conference Paper, Digest - International Geoscience and Remote Sensing Symposium (IGARSS)
The US Geological Survey (USGS) instituted a program in 1980 to acquire side-looking airbore radar (SLAR) data and make these data readily available to the public in a mosaic format comparable to the USGS 1:250,000-scale topographic map series. The SLAR data are also available as strip images at an acquisition...
TRANSIENT SOUNDING INVESTIGATION OF NEWBERRY VOLCANO, OREGON.
David V. Fitterman, Deborah K. Neev
1985, Conference Paper, Transactions - Geothermal Resources Council
Transient electromagnetic soundings were used to map the geoelectrical structure of Newberry Volcano in central Oregon. An extensive conductor was found to underlie the volcano and to have resistivities from 20 OMEGA m to 72 OMEGA m. The depth to the conductor ranges from 410 m to 870 m. Inside...
