Hydraulic piston coring of late Neogene and Quaternary sections in the Caribbean and equatorial Pacific: Preliminary results of Deep Sea Drilling Project leg 68
W.L. Prell, James V. Gardner, Charles Adelseck, Gretchen Blechschmidt, Andrew J. Fleet, Lloyd D. Keigwin, Dennis V. Kent, Michael T. Ledbetter, Ulrich Mann, Larry Mayer, William R. Reidel, Constance Sancetta, Dann J. Spariosu, Herman B. Zimmerman
1980, Geological Society of America Bulletin (91) 433-444
Leg 68 of the Deep Sea Drilling Project used the newly developed Hydraulic Piston Corer (HPC) to recover two virtually continuous, undisturbed sections of late Neogene and Quaternary sediment. The sites are located in the western Caribbean (Site 502, 4 holes) and in...
Scaling variables and interpretation of eigenvalues in principal component analysis of geologic data
A.T. Miesch
1980, Journal of the International Association for Mathematical Geology (12) 523-538
The dominant feature distinguishing one method of principal components analysis from another is the manner in which the original data are transformed prior to the other computations. The only other distinguishing feature of any importance is whether the eigenvectors of the inner product-moment of the transformed data matrix are taken...
Computational methods for inverse problems in geophysics: Inversion of travel time observations
V. Pereyra, H.B. Keller, W.H.K. Lee
1980, Physics of the Earth and Planetary Interiors (21) 120-125
General ways of solving various inverse problems are studied for given travel time observations between sources and receivers. These problems are separated into three components: (a) the representation of the unknown quantities appearing in the model; (b) the nonlinear least-squares problem; (c) the direct, two-point ray-tracing problem used to compute...
Gas and hydrogen isotopic analyses of volcanic eruption clouds in Guatemala sampled by aircraft
W.I. Rose Jr., R.D. Cadle, L.E. Heidt, I. Friedman, A.L. Lazrus, B.J. Huebert
1980, Journal of Volcanology and Geothermal Research (7) 1-10
Gas samples were collected by aircraft entering volcanic eruption clouds of three Guatemalan volcanoes. Gas chromatographic analyses show higher H2 and S gas contents in ash eruption clouds and lower H2 and S gases in vaporous gas plumes. H isotopic data demonstrate lighter isotopic distribution of water vapor in ash...
Geophysical investigations in deep horizontal holes drilled ahead of tunnelling
R. D. Carroll, M.J. Cunningham
1980, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts (17) 89-107
Deep horizontal drill holes have been used since 1967 by the Defense Nuclear Agency as a primary exploration tool for siting nuclear events in tunnels at the Nevada Test Site. The U.S. Geological Survey had developed geophysical logging techniques for obtaining resistivity and velocity in these holes, and to date...
Emission spectra of the cations of some fluoro-substituted phenols in the gaseous phase
John Paul Maier, O. Marthaler, Manijeh Mohraz, R.H. Shiley
1980, Journal of Electron Spectroscopy and Related Phenomena (19) 11-20
Emission spectra of the cations of 2,5- and 3,5-difluorophenol, of 2,3,4- and 2,4,5-trifluorophenol, of 2,3,5,6-tetrafluorophenol and of 2,3,4,5,6-pentafluorophenol have been obtained in the gas phase using low-energy electron beam excitation. The band systems are assigned to the B̃(π−1) → X̃(π−1) electronic transitions of these cations by reference to photoelectron spectroscopic data. The...
Geohydrology of southwestern Kansas
Edwin D. Gutentag, David H. Lobmeyer, Steven E. Slagle
1980, Open-File Report 80-218
Southwestern Kansas is one of the principal areas of ground-water development for irrigation in the State, and many reports are available concerning ground-water conditions in the area. The purposes of this investigation were to consolidate and update data, to determine the extent and effects of irrigation development on the ground-water...
Flameless atomic-absorption determination of gold in geological materials
A. L. Meier
1980, Journal of Geochemical Exploration (13) 77-85
Gold in geologic material is dissolved using a solution of hydrobromic acid and bromine, extracted with methyl isobutyl ketone, and determined using an atomic-absorption spectrophotometer equipped with a graphite furnace atomizer. A comparison of results obtained by this flameless atomic-absorption method on U.S. Geological Survey reference rocks and geochemical samples...
Nd-isotopes in selected mantle-derived rocks and minerals and their implications for mantle evolution
A. R. Basu, M. Tatsumoto
1980, Contributions to Mineralogy and Petrology (75) 43-54
The Sm-Nd systematics in a variety of mantle-derived samples including kimberlites, alnoite, carbonatite, pyroxene and amphibole inclusions in alkali basalts and xenolithic eclogites, granulites and a pyroxene megacryst in kimberlites are reported. The additional data on kimberlites strengthen our earlier conclusion that kimberlites are derived from a relatively undifferentiated chondritic...
Notes on sedimentation activities calendar year 1979
U.S. Interagency Advisory Committee on Water Data- Subcommittee on Sedimentation
1980, Report
This report is a digest of information furnished by Federal Agencies on sedimentation investigations, both ongoing and planned. Included in the report are a review of important findings, new methodologies, new publications, laboratory and other research activities, and other pertinent information. The material is organized on the basis of the...
Implications of regional gravity for state of stress in the earth's crust and upper mantle
M. McNutt
1980, Journal of Geophysical Research Solid Earth (85) 6377-6396
Topography is maintained by stress differences within the earth. Depending on the distribution of the stress we classify the support as either local or regional compensation. In general, the stresses implied in a regional compensation scheme are an order of magnitude larger than those corresponding to local isostasy. Gravity anomalies,...
Preparation and Presentation of Digital Maps in Raster Format
K. Edwards, R. M. Batson
1980, American Cartographer (7) 39-49
A set of algorithms has been developed at USGS Flagstaff for displaying digital map data in raster format. The set includes: FILLIN, which assigns a specified attribute code to units of a map which have been outlined on a digitizer and converted to raster format; FILBND, which removes the outlines;...
Some constraints on levels of shear stress in the crust from observations and theory
Art McGarr
1980, Journal of Geophysical Research Solid Earth (85) 6231-6238
In situ stress determinations in North America, southern Africa, and Australia indicate that on the average the maximum shear stress increases linearly with depth to at least 5.1 km measured in soft rock, such as shale and sandstone, and to 3.7 km in hard rock, including granite and quartzite. Regression...
Satellite image atlas of glaciers
J.G. Ferrigno, R. S. Williams Jr.
1980, IAHS Red Book 126
The US Geological Survey has initiated a project to prepare a satellite image atlas of glaciers with the cooperation of a number of US and international organizations. The atlas will include the geographical distribution of glaciers as well as topics of glaciology and related environmental phenomena using Landsat, NOAA and...
Water resources data for Maryland and Delaware, water year 1978
Water Resources Division, U.S. Geological Survey
1979, Water Data Report MD-DE-78-1
No abstract available....
Developing a state water plan: Ground-water conditions in Utah, spring of 1979
Don Price, W.N. Jibson, P. Kay Contratto, R. W. Mower, Judy I. Steiger, V.L. Jensen, M. D. ReMillard, D. C. Emett, C.T. Sumison, P.A. Carroll, L.J. Neff, G. W. Sandberg, L. R. Herbert
1979, Cooperative Investigations Report 18
This report is the sixteenth in a series of annual reports that describe ground-water conditions in Utah. Reports in this series, prepared cooperatively by the U.S. Geological Survey and the Utah Division of Water Resources, provide data to enable interested parties to keep abreast of changing ground-water conditions.This report, like...
Preliminary geologic and geophysical data of the UE25a-3 exploratory drill hole, Nevada Test Site, Nevada
Florian Maldonado, D. C. Muller, J.N. Morrison
1979, Report
The UE25a-3 drill hole, located in the Calico Hills area, southwestern part of the Nevada Test Site, was drilled as part of an effort to evaluate the Calico Hills area as a possible nuclear waste repository site. The purpose of the drill hole was to verify the existence of an...
Land use statistics for West Virginia, Part I
Robert B. Erwin, West Virginia Geological and Economic Survey, Water Resources Division, U.S. Geological Survey
1979, Environmental Geology Bulletin 18
The West Virginia Geological and Economic Survey and the United States Geological Survey have completed a cooperative program to provide land-use and land-cover maps and data for the State. This program begins to satisfy a longstanding need for a consistent level of detail, standardization in categorization, and scale of compilation...
United States Geological Survey Yearbook, fiscal year 1978
Water Resources Division, U.S. Geological Survey
1979, Report
Fiscal year 1978 saw the U.S. Geological Survey continuing to perform its basic historical missions of collecting, analyzing, and disseminating information about the Earth, its processes, and its water and mineral resources. Classifying Federal lands and supervising lessee mineral extraction operations on those lands were also major Survey concerns during...
Preliminary summary of the U.S. Geological Survey strong-motion records from the October 15, 1979 Imperial Valley earthquake
R. L. Porcella, R.B. Matthiesen
1979, Open-File Report 79-1654
This report summarizes the data from near-in strong-motion accelerograph stations operated by the U.S. Geological Survey in the Imperial Valley of California at the time of the October 15, 1979 Imperial Valley earthquake. The purpose of this report is to alert others as to the nature of the strong-motion data...
Feeding ecology and development of juvenile black ducks in Maine
Kenneth J. Reinecke
1979, The Auk (96) 737-745
Data from 41 juvenile Black Ducks (Anas rubripes) collected in the Penobscot River valley of Maine from June through August 1974-76 were used to estimate the proportion of aquatic invertebrates in the prefledging diet and the allometric growth rates of the tarsi, flight muscles, and alimentary system. The proportion of...
Multiple-factor influences upon feeding flight rates at wading bird colonies (Alias: Are flight-line counts useful?)
R. Michael Erwin, John C. Ogden
1979, Conference Paper, Proceedings of the 1979 conference of the colonial waterbird group
The temporal patterns of feeding, resting, and reproductive behavior in colonial wading birds have been studied by a number of investigators (Recher and Recher 1972, King 1974, Capen 1978, Custer and Osborn 1978, Kushlan 1978) both on a short-term (daily) and long-term (annual) basis. In coastal marine environments, activities...
Acute oral and percutaneous toxicity of pesticides to mallards: Correlations with mammalian toxicity data
R. H. Hudson, M. A. Haegele, R. K. Tucker
1979, Toxicology and Applied Pharmacology (47) 451-460
Acute oral (po) and 24-hr percutaneous (perc) LD50 values for 21 common pesticides (19 anticholinesterases, of which 18 were organophosphates, and one was a carbamate; one was an organochlorine central nervous system stimulant; and one was an organonitrogen pneumotoxicant) were determined in mallards (Anas platyrhynchos). Three of the pesticides tested...
Seasonal occurrence and distribution of submerged aquatic macrophytes in the tidal Potomac River
G.M. Haramis, V. Carter, P. Gammon, C. Hupp
1979, Book chapter, Seminar on water quality in the tidal Potomac River, December 1978
A systematic survey was conducted in the Tidal Potomac River in 1978 to determine the presence, abundance, and phenology of submersed aquatic macrophytes. The survey covered 81.5 km of main river and 59.3 km of tributary on the Maryland shore. Four regions were selected for the study: (1)...
Bird communities associated with succession and management of lowland conifer forests
D.K. Dawson
1979, Book chapter, Management of North Central and Northeastern Forests for Nongame Birds, Proceedings of the Workshop
Data from published bird censuses were used to determine changes in avian communities in relation to plant succession, fire, type conversion, and timber management practices in lowland conifer forests in the northeastern United States. With modifications in current logging practices, habitat for the bird species that nest in undisturbed...
