Relationship between reported commercial landings and abundance of young striped bass in Chesapeake Bay, Maryland
C.P. Goodyear
1985, Transactions of the American Fisheries Society (114) 92-96
The ability to predict subsequent landings of striped bass Morone saxatilis from the indices of abundance of juveniles (young of the year) determined annually by the Maryland Department of Natural Resources was evaluated by multiple‐regression techniques. About 57% of the variation in reported landings could be accounted for by the...
HIGH-ANGLE AEOLIAN CROSSBEDDING AT TRAIL RIDGE, FLORIDA.
Eric Force, Tom Garnar
1985, Industrial Minerals
This paper described new evidence concerning the origin of the Trail Ridge mineral sands deposit in Florida. Rarely exposed sections of the orebody exhibit structures indicative of sand dune formation rather than coastal beach sand accumulation. The implications for mineral sands exploration, and therefore resources, in the southeastern USA are...
Geochemistry: Uses for synthetic fluid inclusions in quartz crystals
E. Roedder
1985, Nature (315) 544-545
[No abstract available]...
The effect of glaciers on streamflow variations
Andrew G. Fountain, Wendell V. Tangborn
1985, Water Resources Research (21) 579-586
The effect of temperate glaciers on runoff variations is examined for the North Cascade Mountains of Washington State. The principal influences of glaciers on streamflow are often unexpected contributions to streamflow volume, a delay of the maximum seasonal flow, and a decrease in annual and monthly variation of runoff. The...
EARTHQUAKE HAZARDS IN THE OFFSHORE ENVIRONMENT.
Robert A. Page, Peter W. Basham
1985, Ocean science and engineering (10) 195-352
This report discusses earthquake effects and potential hazards in the marine environment, describes and illustrates methods for the evaluation of earthquake hazards, and briefly reviews strategies for mitigating hazards. The report is broadly directed toward engineers, scientists, and others engaged in developing offshore resources. The continental shelves have become a...
Chemistry of thermal and nonthermal springs in the vicinity of Lassen Volcanic National Park
J. M. Thompson
1985, Journal of Volcanology and Geothermal Research (25) 81-104
Meaningful applications of water geothermometry to thermal springs in and around Lassen Volcanic National Park (LVNP) are limited to Growler Hot Spring and Morgan Hot Springs. Most hot springs located within LVNP are low-chloride, acid-sulfate waters associated with nearby steam vents. This type of hot-spring activity is characteristically found above...
Origin of discontinuities in coal-bearing strata at roaring creek (basal Pennsylvanian of Indiana)
W.J. Nelson, Donald L. Eggert, William A. DiMichele, A.C. Stecyk
1985, International Journal of Coal Geology (4) 355-370
Basal Pennsylvanian coal-bearing strata exposed along Roaring Creek, west-central Indiana, exhibit extreme lateral discontinuity. Coal seams abruptly change in thickness and elevation; they split, grade into shale, are cut out by channels and disrupted by soft-sediment deformational structures. Initial sediments were...
Electronic spectra of Fe3+ oxides and oxide hydroxides in the near IR to near UV.
David M. Sherman, T.D. Waite
1985, American Mineralogist (70) 1262-1269
Optical absorption and diffuse reflectance spectra of several Fe2O3 and FeOOH polymorphs (hematite, maghemite, goethite, lepidocrocite) in the near-IR to near-UV spectral regions (2000-200 nm) are presented. The spectra consist primarily of Fe3+ ligand field and ligand-to-metal charge-transfer transitions.-J.A.Z....
QUALITY ASSURANCE OF U. S. GEOLOGICAL SURVEY WATER-QUALITY FIELD MEASUREMENTS.
D. E. Erdmann, J.D. Thomas
1985, Conference Paper, ASTM Special Technical Publication
Reference samples are submitted semiannually to field analysts for measurement of these parameters with the same techniques and instruments used in the field. Both the personnel and the instruments involved in making the determinations are recorded. When the data are complete, a report defining the quality of the analytical results...
Element mobility during alteration of silicic ash to kaolinite - A study of tonstein
R. A. Zielinski
1985, Sedimentology (32) 567-579
A laterally persistent kaolinitic mudstone parting (tonstein) occurring in a Wyoming coal bed of Eocene age was sampled to estimate the compositional contrast with a probable silicic ash precursor, and to determine the compositional influence of leached ash on immediately adjacent coal. With the exception of Al, and possibly Ti,...
Statistical evaluation of an inductively coupled plasma atomic emission spectrometric method for routine water quality testing
J.R. Garbarino, B. E. Jones, G.P. Stein
1985, Applied Spectroscopy (39) 535-541
In an interlaboratory test, inductively coupled plasma atomic emission spectrometry (ICP-AES) was compared with flame atomic absorption spectrometry and molecular absorption spectrophotometry for the determination of 17 major and trace elements in 100 filtered natural water samples. No unacceptable biases were detected. The analysis precision of ICP-AES was found to...
PREPRO: a computer program for encoding regional exploration data for use in characteristic analysis
N.J. Bridges, J.T. Hanley, R.B. McCammon
1985, Computers & Geosciences (11) 513-519
The preprocessor (PREPRO) computer program offers the exploration geologist a variety of options for encoding regional exploration data into ternary form for use in characteristic analysis. PREPRO's options include variable-input formats, cursor input, ordering among a set of input variables, and selectable ternary transformations. Moreover, the program provides for the...
Redescription of Bellerophon bittneri (Gastropoda: Triassic) from Wyoming.
E. L. Yochelson, D.W. Boyd, B. Wardlaw
1985, Contributions to Geology - University of Wyoming, Laramie (23) 99-104
Bellerophon bittneri Newell and Kummel is an Early Triassic bellerophontacean from the Dinwoody Formation in the Wind River Mountains. The available type material consists of one fair, but incomplete, external mold, which resembles a Bellerophon but is actually a Retispira. After repeated search, additional specimens were found at one locality...
An estimate of hydrothermal fluid residence times and vent chimney growth rates based on 210Pb Pb ratios and mineralogic studies of sulfides dredged from the Juan de Fuca Ridge
D. Kadko, R. Koski, M. Tatsumoto, R. Bouse
1985, Earth and Planetary Science Letters (76) 35-44
The210PbPb ratios across two sulfide samples dredged from the Juan de Fuca Ridge are used to estimate the growth rate of the sulfide material and the residence time of the hydrothermal fluid within the oceanic crust from the onset of basalt alteration.210Pb...
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...
Federal coal resource occurrence and coal development potential maps of the Pillar 3 SE 7 1/2-minute quadrangle, San Juan and McKinley Counties, New Mexico
Berge Exploration Inc.
1985, Open-File Report 79-1379
No abstract available....
Geohydrology of the aquifer in the Santa Fe Group, northern West Mesa of the Mesilla Basin near Las Cruces, New Mexico
R. G. Myers, B. R. Orr
1985, Water-Resources Investigations Report 84-4190
Because of the heterogeneity of the Santa Fe Group, New Mexico, the hydrologic characteristics of the aquifer vary substantially from place to place. Hydraulic conductivities of 12 and 30 feet per day were estimated from aquifer tests for two wells in the eastern one-half of the study area. Well yields...
Earthquakes March-April 1985
W. J. Person
1985, Earthquake Information Bulletin (USGS) (17) 193-198
There were two major earthquakes (7.0-7.9) during this reporting period-both were in Chile and both caused fatalities. Earthquake-related deaths were also reported from the Philippine Islands, Bolivia, and China. In the United States a strong earthquake occurred in Alaska on March 9 and a magntidue 6.3 earthquake occurred off the coast...
The age and origin of felsic intrusions of the Thetford Mines ophiolite, Quebec
D.A. Clague, C.S. Frankel, J.S. Eaby
1985, Canadian Journal of Earth Sciences (22) 1257-1261
The Thetford Mines ophiolite in southern Quebec was obducted in Early Ordovician time during the closing of the proto-Atlantic. The tectonized peridotite lower unit of the ophiolite is intruded by felsic dikes and pods including isolated lenses of massive rodingite, small bodies of strongly deformed diorite, and younger, less deformed...
Prediction of central California earthquakes from soil-gas helium fluctuations
G.M. Reimer
1985, Pure and Applied Geophysics PAGEOPH (122) 369-375
The observations of short-term decreases in helium soil-gas concentrations along the San Andreas Fault in central California have been correlated with subsequent earthquake activity. The area of study is elliptical in shape with radii approximately 160??80 km, centered near San Benito, and with the major axis parallel to the Fault....
CONMAP - USGS MARINE MAPPING PROGRAM.
Edward C. Escowitz
1985, Conference Paper, Technical Papers of the American Congress of Surveying and Mapping
The U. S. Geological Survey has commenced a marine mapping program, CONMAP (the Continental Margin Maps), which is supported by, and dependent on, a foundation of digital data-bases. The goal of the program's first phase is to prepare a series of maps that completely cover the Exclusive Economic Zone. The...
In-situ fluid-pressure measurements for earthquake prediction: An example from a deep well at Hi Vista, California
J. H. Healy, T. C. Urban
1985, Pure and Applied Geophysics PAGEOPH (122) 255-279
Short-term earthquake prediction requires sensitive instruments for measuring the small anomalous changes in stress and strain that precede earthquakes. Instruments installed at or near the surface have proven too noisy for measuring anomalies of the size expected to occur, and it is now recognized that even to have the possibility...
TSX-PLUS MULTI-TASKING UPGRADE FOR THE NICOLET L-11 POWDER DIFFRACTION SYSTEM.
J. Fitzpatrick, David L. Queen
1985, Conference Paper, Advances in X-Ray Analysis
In August of 1982, a single-user, dual-translator, automated powder diffraction system was purchased by the Denver Research Institute for use on project work in the Chemical and Materials Sciences Division. Within a short period of time, the system had already become saturated with users. Scheduling conflicts arose. In view of...
Adsorption and desorption of hexavalent chromium in an alluvial aquifer near Telluride, Colorado
Kenneth G. Stollenwerk, D.B. Grove
1985, Journal of Environmental Quality (14) 150-155
A laboratory investigation of reactions between hexavalent chromium [Cr(VI)] and alluvium was conducted to evaluate reactions of Cr(VI) contaminating an alluvial aquifer near Telluride, CO and to determine the mechanisms responsible for these reactions. Uncontaminated alluvium and groundwater (spiked with CrO42−) from the study site were used...
Scientific knowledge and modern prospecting
G. J. Neuerburg
1985, Mineralium Deposita (20) 30-32
Modern prospecting is the systematic search for specified and generally ill-exposed components of the Earth's crust known as ore. This prospecting depends entirely on reliable, or scientific knowledge for guidance and for recognition of the search objects. Improvement in prospecting results from additions and refinements to scientific knowledge. Scientific knowledge...
