Timothy W. Joseph
1977, FWS/OBS 78/13
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Page 153, results 3801 - 3825
Publication Extents
Not all publications have extents, not all extents are completely accurateRichard Hereford
1977, GSA Bulletin (88) 199-211
Grain size, bedding thickness, dispersion of cross-stratification azimuths, and assemblages of sedimentary structures and trace fossils vary across central Arizona; they form the basis for recognizing six facies (A through F) in the Tapeats Sandstone. Five of these (A through E), present in western central Arizona, are marine deposits containing...
Robert E. Gill Jr.
1977, Western Birds (8) 1-12
San Francisco Bay represents one of the largest estuarine areas on the Pacific Coast of North America. Its open waters, tidal flats, tidal marshes and solar evaporation ponds provide critical foraging, resting and breeding habitat for migratory and resident birds. The avifauna of San Francisco Bay has received considerable attention;...
C. A. von Hake
1977, Earthquake Information Bulletin (USGS) (9) 28-30
Virginia is a State of considerable seismic activity, although the earthquakes are rarely strong. Thirty-five shocks, intensity MM V or greater (Modified Mercalli Scale), are listed with epicenters within its borders. The locations of several of the older events are not precise; thus, the above count i subject to alteration....
George Plafker
1977, Earthquake Information Bulletin (USGS) (9) 18-20
The main fault along which the destructive Guatemala earthquake occurred was the Motagua fault. Ground breakage was observed in a continuous, well-defined line for 230 km. At its closest point, the fault is 25 km north of Guatemala City. Surface displacement across the fault was dominantly horizontal and sinistral (see...
D. R. Mullineaux
1976, Miscellaneous Field Studies Map 786
Volcanic eruptions and related phenomena can be expected to occur in the Western United States, and in some places are potentially hazardous enough to be considered in longe-range land-use planning. But the immediate risk from volcanic hazards is low because eruptions are so infrequent in the conterminous United States that...
William W. Dudley Jr., J. D. Larson
1976, Professional Paper 927
The Ash Meadows area, at the southern tip of the Amargosa Desert in southern Nevada, discharges ground water collected over several thousand square miles of a regional flow system developed in Paleozoic carbonate rocks. Water moves westward across fault contacts from the bedrock into poorly interconnected gravel, sand, and terrestrial-limestone...
Thomas C. Winter
1976, Professional Paper 1001
Because the interrelationship of lakes and ground water is perhaps the least understood aspect of lake hydrology, vertical-section, steadystate, numerical-model simulations were run to evaluate the factors that control the interaction of lakes and ground water. The study is concerned only with lakes encircled by water-table mounds that are at...
Robert C. Greene
1976, Open-File Report 76-753
The McDermitt caldera, a major Miocene eruptive center is locatedin the northernmost Great Basin directly west of McDermitt, Nev. The alkali rhyolite of Jordan Meadow was erupted from the caldera and covered an area of about 60,000 sq km; the volume of rhyolite is about 960 cubic km. Paleozoic and...
Thomas P. Miller, Raymond L. Elliott, Warren I. Finch, Robert A. Brooks
1976, Open-File Report 76-710
Uranium-, thorium-, and rare-earth bearing rocks were found by a U.S. Geological Survey field party 15 miles northeast of Golovin, Alaska, in the southeastern Seward Peninsula (fig. 1) in June 1976. The mineralized areas occur in syenite and appear to be concentrated along the margins of alkaline dikes, with allanite...
Robert A. Zielinski, Peter W. Lipman
1976, GSA Bulletin (87) 1477-1485
The Oligocene Summer Coon center, an eroded continental-interior volcano of the eastern San Juan Mountains, Colorado, was the source of magmas ranging in composition from basaltic andesite to rhyolite. Previous Pb and Sr isotope studies indicate derivation of the magmas from an isotopically homogeneous source. This study presents new data...
Mortimer H. Staatz, John W. Adams, James S. Wahlberg
1976, Journal of Research of the U.S. Geological Survey (4) 575-582
Four types of thorite - brown, yellow, orange, and greenish-black - occur together in narrow fracture fillings rich in brown fluorite near the outer edge of the Seerie pegmatite. The brown thorite is by far the most abundant. The thorites are remarkably similar in composition except for their Fe2O3 and...
Donald C. Ross
1976, Journal of Research of the U.S. Geological Survey (4) 561-568
Prehnite is abundant as monomineralic veins, as lenses in biotite, and as discrete patches and apparent primary crystals in both plutonic and metamorphic rocks along the west edge of the Salinian block in the northern Santa Lucia Range. The prehnite appears to be concentrated near the Sur fault zone but...
Thomas J. O'Shea
1976, Journal of Mammalogy (57) 450-460
A field study of home range, social behavior, and dominance relationships in the African unstriped ground squirrel, Xerus rutilus, was conducted in semi-arid bushland near Kibwezi, Kenya. Ground squirrels lived alone or in small groups in isolated burrow systems and had broadly overlapping home ranges. They were neither...
D.J. Milton
1976, Bulletin Volcanologique (40) 201-208
A group of craters 120 km southeast of Kerman, the largest 1200 m across and 300 m deep, are typical maars, excavated depression with rims of bedded pyroclastic debris. Most of the crater rims are composed entirely of country rock clasts, but the largest crater yields tephrite, composed of phenocrysts...
V. Charles Suppes, Fred P. Meyer
1975, Journal of Parasitology (61) 772-775
Parasitism of fish by coelenterates is rare and the first North American infection was reported in sturgeon (Hoffman et al., 1974, J Parasitol 60: 548-550). In the USSR parasitism of sturgeon (Acipenser sp.) eggs by the coelenterate Polypodium hydriforme Ussov 1885 has long been reported and investigated [Raikova, 1959, in...
Hearn B. Carter Jr., F.R. Boyd
1975, Physics and Chemistry of the Earth (9) 247-255
Within a swarm of late middle Eocene subsilicic-alkalic diatremes, one diatreme 270 by 370 m and an associated dike contain common xenoliths of granulite and rare xenoliths of spinel peridotite and garnet peridotite. Six garnet lherzolite xenoliths have been found and these...
William Wallace Patton Jr., Marvin A. Lanphere, Thomas P. Miller, Richard A. Scott
1975, Open-File Report 75-150
Reconnaissance investigations of the heretofore little known volcanic assemblage on St. Matthew Island provide significant information on the tectonic history of the Bering Sea shelf. St. Matthew Island is made up of approximately 500 m of subaerial calc-alkaline volcanic rocks ranging in composition from high-alumina basalt to rhyolite. Four K-Ar...
D. G. Adolphson
1975, Open-File Report 75-355
Thirty-six test holes were augered by the U.S. Geological Survey in the vicinity of Sol,,r Creek, Rosebud Indian Reservation, Todd County, South Dakota. Wells prcducing more than S gallons per minute (0.32 litre per second) from the Tertiary deposits are rare. However, as much as 20 feet (6.1 metres) of...
Gretchen Luepke
1975, Open-File Report 75-667
Sediments of the Beaufort Sea, off the North Slope of Alaska contain a great variety of heavy minerals. These include garnet, chrome spinel, augite, pigeonite, diopside, hornblende, enstatite, hypersthene, epidote, clinozoisite, zoisite, apatite, tourmaline, chloritoid, sphene, zircon, and opaque minerals. Much rarer constituents are glaucophane, lamprobolite, rutile, kyanite, staurolite, and...
D.A. Singer, Dennis P. Cox, Lawrence J. Drew
1975, Professional Paper 907-A
Three types of copper deposits-porphyry, strata-bound, and massive sulfide-are described, and the distributions of tonnages and grades for 267 deposits are compared with normal and lognormal frequency distributions. The relationships between grades and tonnages are analyzed by examining the correlation coefficients of these variables. Conclusions reached include the following: (1)...
Robert B. Forbes, Florence R. Weber
1975, Journal of Research of the U.S. Geological Survey (3) 647-657
In 1965, a deep test hole drilled near Eielson Air Force Base, Fairbanks district, Alaska, penetrated 9,774 ft (2,979.1 m) into schists of the metamorphic complex of the Yukon-Tanana Upland. Cores recovered from the test hole show that the section is dominated by calc-magnesian rocks with subordinate pelitic schists. Pelitic...
E.M. Preston
1975, Journal of Mammalogy (56) 645-652
This paper describes the home range defense behavior observed when nonresident male red foxes were introduced into established home ranges of resident male-female pairs. In 12 observation periods, four intruders were introduced to each of three mated pairs which had been given three weeks to acclimate to a 4.05-hectare, fenced...
Dennis P. Cox, Ileana Perez Gonzalez, J. Thomas Nash
1975, Journal of Research of the U.S. Geological Survey (3) 313-327
The Sapo Alegre prospect, a small porphyry copper-molybdenum occurrence in west-central Puerto Rico, is characterized by distinct zones of alteration and mineralization of quartz diorite porphyry. A biotite-chlorite zone in the porphyry near its contact with surrounding metavolcanic rocks contains copper, molybdenum, gold, silver, selenium, and tellurium. A quartz-sericite-pyrite zone...
J.C. Jarvis, T.R. Wildeman, N.G. Banks
1975, Chemical Geology (16) 27-37
Samples of unaltered and metamorphosed Leadville Limestone (Mississippian, Colorado) were analyzed by neutron activation for ten rare-earth elements (REE). The total abundance of the REE in the least-altered limestone is 4–12 ppm, and their distribution patterns are believed to be dominated by...