New evidence on the age of the top of the Madison Limestone (Mississippian), Bighorn Mountains, Wyoming and Montana
William Jasper Sando, Bernard L. Mamet
1974, Journal of Research of the U.S. Geological Survey (2) 619-624
The youngest strata recognized in the Madison Limestone arc dated by foraminifers and corals at two localities on the west flank of the Bighorn Mountains in Wyoming and Montana. Fossils collected in situ from the Madison at Shell Canyon represent Zone 12 of Mamet and Skipp of late Salem age...
Correlation of uppermost Precambrian and lower Cambrian strata from southern to east-central Nevada
John H. Stewart
1974, Journal of Research of the U.S. Geological Survey (2) 609-618
Study of exposed uppermost Precambrian and Lower Cambrian strata in southern and east-central Nevada and intervening areas indicates that the Johnnie Formation of southern Nevada and the McCoy Creek Group (restricted) are correlative. In detail, the uppermost units of both sequences, the Rainstorm Member of the Johnnie Formation and the...
Stratigraphy, structure, and geologic history of the Lunar Lake Caldera of northern Nye County, Nevada
E. B. Ekren, W. D. Quinlivan, R.P. Snyder, F. J. Kleinhampl
1974, Journal of Research of the U.S. Geological Survey (2) 599-608
The Lunar Lake caldera is in northern Nye County, Nev., about 70 mi (110 km) east-northeast of Tonopah. It is the youngest caldera in the central Nevada multiple-caldron complex and the source of the tuff of Lunar Cuesta, a multiple-flow simple cooling unit of quarts latitic welded tuff that is...
Phosphorus, iron, and manganese distribution in sediment cores of six Wisconsin lakes
Gilbert C. Bortleson, G. Fred Lee
1974, Limnology and Oceanography (19) 794-801
Depositional patterns of iron, manganese, and phosphorus in one central and five northern Wisconsin lakes ranging from oligotrophic to eutrophic, primarily from natural causes, have been investigated. One-meter cores from one or more locations within each lake were analyzed. The historical pattern of iron and manganese deposition is closely related...
Correlation between geophysical data and rock types in the Piedmont and coastal plain of northeast Virginia and related areas
Louis Pavlides, K Sylvester, David L. Daniels, Robert G. Bates
1974, Journal of Research of the U.S. Geological Survey (2) 569-580
Physical, chemical, and mineralogic characteristics of rock units in parts of the northeast Virginia Piedmont are reflected in the aeromagnelic, aeroradioactivity, and gravity data for this area. Magnetic anomalies show the areal distribution of rocks containing magnetite. Aeroradiometric anomalies in the Piedmont and Coastal Plain provinces are directly related to...
Dissolved organic carbon (DOC), an index of organic contamination in ground water near Barstow, California
Jerry L. Hughes, Lawrence A. Eccles, Ronald L. Malcolm
1974, Groundwater (12) 283-290
The alluvial aquifer underlying and adjacent to the Mojave River near Barstow, California, has been subjected to degradation from percolation of industrial and municipal wastes for more than 60 years. Effluents discharged to the aquifer have contained high concentrations of both organic (detergents, oil and grease, phenols, humic compounds, and...
Detailed near-bottom geophysical profile across the continental slope off northern California
Eli A. Silver
1974, Journal of Research of the U.S. Geological Survey (2) 563-567
A geophysical profile was run across the continental slope off the California-Oregon border by use of a deeply submerged instrument package, approximately 50 m above the sea floor, containing a proton magnetometer and a 3.5-kHz transducer for shallow seismic penetration. Surface-towed seismic reflection equipment was operated concurrently. The deep-tow data...
Stratiform chromitite at Campo Formoso, Bahia, Brazil
David Carl Hedlund, Jairo Fernandes de Couto Moreira, Antonio Carlos Ferraz Pinto, Jose Carols Goncalves da Silva, Geraldo Vianney V. Souza
1974, Journal of Research of the U.S. Geological Survey (2) 551-562
Serpentinized ultramafic rocks of pre-Minas age (Precambrian) crop out in an elongate belt 1 km wide and 15 km long on the west side of the Serra de Jacobina near Campo Formoso, Brazil. The original stratiform ultramafic body has been so metamorphosed, faulted, and eroded that only narrow dismembered segments...
Geohydrologic considerations in the management of radioactive waste
George D. DeBuchananne
1974, Nuclear Technology (24) 356-361
Nongaseous radioactive wastes occur as liquids containing high-level concentrations of radionuclides, liquids containing low concentrations of radionuclides, and solids contaminated by radioactivity. Whether released by accident or design into the earth or onto the earth’s surface, only water is capable of transporting significant quantities of radionuclides away from burial sites....
Calculated volumes of individual shield volcanoes along the Hawaiian-Emperor chain
Keith E. Bargar, Everett D. Jackson
1974, Journal of Research of the U.S. Geological Survey (2) 545-550
Volume was calculated for the 107 individual volcanic shields along the Hawaiian Ridge Emperor Seamounts chain to help fulfill the need for volume data essential to determining eruption rates, fraction of mantle melted, and other parameters. Boundaries used were based principally upon location of rift zones related to each shield....
Distribution of chlorinated hydrocarbons in stream-bottom material
Donald F. Goerlitz, LeRoy M. Law
1974, Journal of Research of the U.S. Geological Survey (2) 541-543
Six stream-bottom samples, contaminated in situ with high levels of chlorinated hydrocarbons, were size graded and the separates were analyzed. The contaminants were found distributed throughout the sample. The complexity of bottom-material samples is such that the distribution of chlorinated hydrocarbons may be controlled to a major extent by the...
Comparison of bacterial and phytoplankton populations under natural and laboratory conditions
Theodore A. Ehlke
1974, Journal of Research of the U.S. Geological Survey (2) 533-539
Bacteria and blue-green algae were isolated from Oneida Lake, N.Y., and other sources. The blue-green algae Anabaena flos-aquae, Anabaena spiroides, Gloeotrichia echinulata, and Microcystis aeruginosa were grown under laboratory conditions and were separated into unialgal cultures. The bacterial population living in association with the unialgal blue-green algae differed significantly from...
Regional flow system and ground-water quality in western Ohio
Stanley E. Norris
1974, Journal of Research of the U.S. Geological Survey (2) 527-531
Most relatively deep wells drilled in the carbonate aquifers in western Ohio tap a recognizable regional flow system encompassing all or parts of several major basins. The principal recharge area includes the higher, central part of the region, where much of the terrane is hummocky to hilly glacial moraine. The...
Hydrogeologic aspects of structural deformation in the northern Gulf of Mexico Basin
P. H. Jones, R. H. Wallace Jr.
1974, Journal of Research of the U.S. Geological Survey (2) 511-517
The first Earth Resources Technology Satellite (ERTS-1), launched by the National Aeronautics and Space Administration in.July 1972, is providing valuable data for investigations of the most inaccessible and hostile regions of the Earth the Arctic and Antarctic. ERTS images and map products derived from them offer a whole new dimension...
A mineral separation procedure using hot Clerici solution
Sam Rosenblum
1974, Journal of Research of the U.S. Geological Survey (2) 479-481
Careful boiling of Clerici solution in a Pyrex test tube in an oil bath is used to float minerals with densities up to 5.0 in order to obtain purified concentrates of monazite (density 5.1) for analysis. The "sink" and "float" fractions are trapped in solidified Clerici salts on rapid chilling,...
Guidebook to the geology of Meteor Crater, Arizona
Eugene Merle Shoemaker, Susan W. Kieffer, Robert L. Sutton
1974, Book
No abstract available....
A discussion of sources and description of the Earth's magnetic field and its secular variations
Leroy Romney Alldredge, Charles O. Stearns
1974, Journal of Geomagnetism & Geoelectricity (26) 393-404
The problem of collecting data for making geomagnetic charts including secular change is reviewed. Satellite data gives excellent coverage, but the satellite total field intensity data is not sufficient to properly define the field components. In constructing charts, the specific time and space filtering that is used should be specified...
Feeding Ecology of Breeding Blue-Winged Teals
George A. Swanson, Mavis I. Meyer, Jerome R. Serie
1974, Journal of Wildlife Management (38) 396-407
A 5-year investigation of factors influencing the selection of foods consumed by blue-winged teals (Anas discors) during the breeding season in the glaciated prairie region of south-central North Dakota showed that birds first arriving on the breeding grounds consumed a diet consisting of 45 percent invertebrates. The proportion of animal...
Composition and time relations of plutonic and associated volcanic rocks, Boulder Batholith Region, Montana
Robert I. Tilling
1974, GSA Bulletin (85) 1925-1930
Comparison of areally weighted bulk compositions for the Boulder batholith and prebatholith volcanic rocks (Elkhorn Mountains Volcanics) shows a close match in terms of K2O-Na2O-CaO-SiO2 variations. Detailed examination of available chemical data suggests, however, that the constituent units of the volcanic rocks differ among themselves, as well as from many of...
A deep research drill hole at the summit of an active volcano, Kilauea, Hawaii
Charles J. Zablocki, Robert I. Tilling, D. W. Peterson, Robert L. Christiansen, George V. Keller, John C. Murray
1974, Geophysical Research Letters (1) 323-326
Drilling and geophysical logging data for a 1,262 m‐deep bore hole in the area inferred to overlie the magma reservoir of Kilauea Volcano, Hawaii, support earlier interpretations based on surface geophysical surveys that a zone of brackish or saline water lies above the reservoir. Temperatures encountered within the hole are...
Foods of breeding pintails in North Dakota
Gary L. Krapu
1974, Journal of Wildlife Management (38) 408-417
Food habits of breeding pintails (Anas acuta) were studied relative to sex, land use, and reproductive condition during the spring and summer of 1969, 1970, and 1971 in eastern North Dakota. Hens and drakes, respectively, consumed 79.2 percent and 30.0 percent animal matter on nontilled wetlands and consumed 16.6 percent...
Palynology and stratigraphy of Cretaceous strata in Long Island, New York, and Block Island, Rhode Island
Leslie A. Sirkin
1974, Journal of Research of the U.S. Geological Survey (2) 431-440
Palynologic analysis of core samples from Fire Island well, S21,091T, in southern Long Island and of surface samples from Garvies Point in northern Long Island and from eastern Block Island indicates that the Cretaceous of this region includes Raritan, Magothy, Matawan, and Monmouth (as previously defined) strata, and ranges in...
Shallow seismic compressional and shear wave refraction and electrical resistivity investigations at Rocky Flats, Jefferson County, Colorado
Hans D. Ackermann
1974, Journal of Research of the U.S. Geological Survey (2) 421-430
Seismic refraction and electrical resistivity investigations at Rocky Flats, Colo., a gravel-capped pediment, indicated an irregular bedrock surface which ranges in depth from 3 to 27 m (10-90 ft). Layers within the gravel that were revealed by interpretation of seismic and electrical data do not correlate, but the combining of...
Folds and overthrusts of late Jurassic or early Cretaceous age in northern Nevada
Keith B. Ketner, J. Fred Smith Jr.
1974, Journal of Research of the U.S. Geological Survey (2) 417-419
The partly isoclinal, partly overturned Adobe syncline extends for at least 75 mi northeastward across the northern Cortez Mountains, the northern Pinon Range, and along the entire length of the Adobe Range. The folded rocks range in age from Ordovician through Jurassic and may include some rocks of Cretaceous age....
Stratigraphic evidence on the age of the Roberts Mountains thrust, Eureka and White Pine Counties, Nevada
T. B. Nolan
1974, Journal of Research of the U.S. Geological Survey (2) 416
Several stratigraphic discontinuities in Devonian and Mississippian sedimentary sequences in folded thrust plates east of the Roberts Mountains thrust of central Nevada indicate that the thrust was sporadically active during this interval. From estimates for displacement and time involved for the thrust, the average rate of movement was 1 cm/5...
