Taconic plate kinematics as revealed by foredeep stratigraphy, Appalachian orogen
D. C. Bradley
1989, Tectonics (8) 1037-1049
Destruction of the Ordovician passive margin of eastern North America is recorded by an upward deepening succession of carbonates, shales, and flysch. A compilation of the age of shelf drowning (carbonate-to-shale transition) reveals the degree to which orogeny was diachronous both across and along strike. Shelf drowning occurred first at...
The North American Midcontinent rift beneath Lake Superior from GLIMPCE seismic reflection profiling
W.F. Cannon, Alan G. Green, D. R. Hutchinson, Myung W. Lee, Bernd Milkereit, John C. Behrendt, Henry C. Halls, J.C. Green, Albert B. Dickas, G. B. Morey, Richard Sutcliffe, C. Spencer
1989, Tectonics (8) 305-332
The Midcontinent rift system is a 1.1-b.y.-old structure extending from Kansas, through the Lake Superior region, and into southern Michigan. The rift is filled with thick sequences of basaltic volcanic rocks and clastic sediments. For most of its extent it is buried beneath Paleozoic rocks but can be traced by...
Longevity records of North American birds. Supplement 1
M. K. Klimkiewicz, A.G. Futcher
1989, Journal of Field Ornithology (60) 469-494
This is the first supplement to the previous published four-part series on avian longevities (Clapp et al. 1982, 1983; Klimkiewicz et al. 1983; Klimkiewicz and Futcher 1987). R ecords processed in the Bird Banding Laboratory through August 1988 are included, as well as several corrections to the original series. One...
Annual survival rates of breeding adult roseate terns
Jeffrey A. Spendelow, James D. Nichols
1989, The Auk (106) 367-374
Analyses of the capture-recapture data on 910 individual Roseate Terns (Sterna dougallii) trapped from 1978-1987 as breeding adults on nests on Falkner Island, Connecticut, estimate the average annual minimum adult survival rate to be 0.74-0.75. There was weak evidence of year-to-year variation in annual survival rates during the study...
Selenium accumulation by raccoons exposed to irrigation drainwater at Kesterson National Wildlife Refuge, California, 1986
Donald R. Clark Jr., P. A. Ogasawara, Gregory J. Smith, Harry M. Ohlendorf
1989, Archives of Environmental Contamination and Toxicology (18) 787-794
In February–March 1986, eight raccoons (Procyon lotor) were collected at Kesterson Reservoir (Merced Co., California), which had received selenium-contaminated irrigation drainwater, and four raccoons were collected at the nearby Volta Wildlife Area, which had not. Selenium concentrations in Kesterson raccoons averaged 19.9 ppm (μg/g dry wt) in liver, 28.3 ppm...
Polygyny in a wild wolf pack
L.D. Mech, M.E. Nelson
1989, Journal of Mammalogy (70) 675-676
This is the first recorded case of a single free-ranging male wolf breeding two females. The male settled with one at a den. Both females produced pups, and there is some evidence that the pups survived their first winter despite the male's being killed in summer....
Nest success, cause-specific nest failure, and hatchability of aquatic birds at selenium-contaminated Kesterson Reservoir and a reference site
Harry M. Ohlendorf, Roger L. Hothem, Daniel Welsh
1989, The Condor (91) 787-796
During 1983-1985, we studied the reproductive success of several species of aquatic birds (coots, ducks, shorebirds, and grebes) nesting at two sites in Merced County, California: a selenium-contaminated site (Kesterson Reservoir) and a nearby reference site (Volta Wildlife Area). We used a computer program (MICROMORT) developed for the analysis of...
Geology of the Zambales ophiolite, Luzon, Philippines
Darwin L. Rossman, G.C. Castanada, G.C. Bacuta
1989, Tectonophysics (168) 1-22
The Zambales ophiolite of western Luzon, Philippines, exposes a typical succession of basalt flows, diabasic dikes, gabbro and tectonized harzburgite. The age established by limiting strata is late Eocene. Lack of evidence of thrust faulting and the general domal disposition of the lithologie units indicate that the ophiolitic rocks are...
Stetson Pit, Dare County, North Carolina: An integrated chronologic, faunal, and floral record of subsurface coastal quaternary sediments
L.L. York, J.F. Wehmiller, T. M. Cronin, T. A. Ager
1989, Palaeogeography, Palaeoclimatology, Palaeoecology (72) 115-132
Continuous split spoon samples from a drill hole penetrating 34 m of coastal plain sediments at Stetson Pit in Dare County, North Carolina were taken for lithologic, aminostratigraphic, faunal (ostracodes) and floral (pollen) analyses. Three distinct aminozones are recognized in the subsurface section based upon D-alloisoleucine/L-isoleucine (A/I) values in each...
Subduction of the Daiichi Kashima Seamount in the Japan trench
S. Lallemand, Ray Culotta, Roland E. von Huene
1989, Tectonophysics (160) 237-247
In 1984-1985, the Kaiko consortium collected Seabeam, single-channel seismic and submersible sampling data in the vicinity of the Daiichi-Kashima seamount and the southern Japan trench. We performed a prestack migration of a Shell multichannel seismic profile, that crosses this area, and examined it in the light of this unusually diverse...
Assessment of processes affecting low-flow water quality of Cedar Creek, west-central Illinois
Arthur R. Schmidt, W.O. Freeman, R.D. McFarlane
1989, Water-Resources Investigations Report 88-4141
Water quality and the processes that affect dissolved oxygen, nutrient (nitrogen and phosphorus species), and algal concentrations were evaluated for a 23.8-mile reach of Cedar Creek near Galesburg, west-central Illinois, during periods of warm-weather, low-flow conditions. Water quality samples were collected and stream conditions were measured over a diel (24...
The United States Geological Survey: 1879-1989
Mary C. Rabbitt
1989, Circular 1050
The United States Geological Survey was established on March 3, 1879, just a few hours before the mandatory close of the final session of the 45th Congress, when President Rutherford B. Hayes signed the bill appropriating money for sundry civil expenses of the Federal Government for the fiscal year beginning...
Methodology, results, and significance of an unsaturated-zone tracer test at an artificial-recharge facility, Tucson, Arizona
D. D. Graham
1989, Water-Resources Investigations Report 89-4097
A tracer test conducted in 1987 at an artificial-recharge facility in Tucson, Arizona, indicates that solute movement through the poorly sorted stratified alluvial sediments in the unsaturated zone beneath a recharge basin takes place along preferential-flow paths. Movement of a tracer-laced pulse of reclaimed wastewater was monitored using pressure-vacuum lysimeters...
Boron isotope evidence for the involvement of non-marine evaporites in the origin of the Broken Hill ore deposits
J. F. Slack, M. R. Palmer, B.P.J. Stevens
1989, Nature (342) 913-916
Identifying the palaeogeographic setting and mode of origin of stratabound ore deposits can be difficult in high-grade metamorphic terranes, where the effects of metamorphism may obscure the nature of the protoliths. Here we report boron isotope data for tourmalines from the early Proterozoic Broken Hill block, in Australia, which hosts...
Crustal structure of the Chugach Mountains, southern Alaska: A study of peg‐leg multiples from a low‐velocity zone
Ernst Flueh, Walter D. Mooney, Gary S. Fuis, Elizabeth L. Ambos
1989, Journal of Geophysical Research B: Solid Earth (94) 16023-16035
A seismic refraction profile recorded along the geologic strike of the Chugach Mountains in southern Alaska shows three upper crustal high‐velocity layers (6.9, 7.2, and 7.6 km/s) and a unique pattern of strongly focussed echelon arrivals to a distance of 225 km. The group velocity of the...
Peak accelerations from the 17 October 1989 Loma Prieta earthquake
D.M. Boore, Linda Seekins, W. B. Joyner
1989, Seismological Research Letters (60) 151-166
Peak accelerations of the Loma Prieta main shock have been tabulated from instruments maintained by a number of organizations. We have analyzed a subset of 86 records from nominally free-field sites, which have been subdivided into rock, alluvium, and bay-mud categories according to data available in various reports. After correction...
Logging in western Oregon: responses of headwater habitats and stream amphibians
Paul Stephen Corn, R. Bruce Bury
1989, Forest Ecology and Management (29) 39-57
We compared occurrence and abundance of four species of aquatic amphibians in 23 streams flowing through uncut forests to 20 streams flowing through forests logged between 14 and 40 years prior to the study. Species richness was highest in streams in uncut forests. Eleven streams in uncut forests contained all...
Comparative toxicity of lead shot in black ducks (Anas rubripes) and mallards (Anas platyrhynchos)
Barnett A. Rattner, W. James Fleming, C.M. Bunck
1989, Journal of Wildlife Diseases (25) 175-183
In winter, pen-reared and wild black ducks (Anas rubripes), and game farm and wild mallards (Anas platyrhynchos), maintained on pelleted feed, were sham-dosed or given one number 4 lead shot. After 14 days, dosed birds were redosed with two or four additional lead shot. This dosing regimen also was repeated...
The crustal structure of the Wrangellia Terrane along the East Glenn Highway, eastern‐southern Alaska
E.B. Goodwin, Gary S. Fuis, Warren J. Nokleberg, E. L. Ambos
1989, Journal of Geophysical Research B: Solid Earth (94) 16037-16057
Recently acquired seismic refraction data from eastern‐southern Alaska provide new information on the structure and composition of the Wrangellia and adjacent terranes. The data comprise a 160‐km‐long refraction profile along the East Glenn (Tok‐Cutoff) Highway that was collected as part of the U.S. Geological Survey's multidisciplinary Trans‐Alaska Crustal Transect program....
An exact anelastic model for the free-surface reflection of P and S-I waves
Roger D. Borcherdt, G. Glassmoyer
1989, Bulletin of the Seismological Society of America (79) 842-859
Exact anelastic solutions incorporating inhomogeneous waves are used to model numerically S-I and P waves incident on the free surface of a low-loss anelastic half-space. Anelastic free-surface reflection coefficients are computed for the volumetric strain and displacement components of inhomogeneous wave fields. For the problem of an incident homogeneous S-I wave in Pierre shale,...
Application of the Graphic Correlation method to Pliocene marine sequences
H.J. Dowsett
1989, Marine Micropaleontology (14) 3-32
Biostratigraphy — the use of paleontological evidence to establish relative chronologies, forms the cornerstone of many sedimentary geological investigations. Several different approaches to biochronology are available. Traditional interval zones, defined on lowest and/or highest occurrences of selected taxa, are used...
Isostatic residual gravity and crustal geology of the United States
Robert C. Jachens, Robert W. Simpson, Richard J. Blakely, Richard W. Saltus
1989, GSA Memoirs (172) 405-424
A new isostatic residual gravity map of the conterminous United States presents continent-wide gravity data in a form that can be readily used, with geologic information and other geophysical data, in studies of the composition and structure of the continental crust. This map was produced from the gridded gravity data...
Leopard frog and wood frog reproduction in Colorado and Wyoming
Paul Stephen Corn, Lauren J. Livo
1989, Northwestern Naturalist (70) 1-9
Between 1978 and 1988, we recorded reproductive information from populations of ranid frogs in Colorado and Wyoming. Egg masses from five plains and montane populations of northern leopard frogs (Rana pipiens) contained 645-6272 eggs (x̄ = 3045, N = 68 egg masses). In two montane populations of wood frogs (Rana...
Changes in redox conditions in deep‐sea sediments of the subarctic North Pacific Ocean: Possible evidence for the presence of North Pacific Deep Water
Walter E. Dean, J. V. Gardner, Eileen Hemphill-Haley
1989, Paleoceanography (4) 639-653
Cores of upper Quaternary and Holocene sediment from the subarctic North Pacific north of about 48°N contain one or more layers of oxidized brown sediment interbedded within predominantly reduced green sediment. The brown layers are enriched in several trace elements, especially Mn, Mo, Ni, and Co, relative to the green...
Seismic methods for determining earthquake source parameters and lithospheric structure
Walter D. Mooney
1989, GSA Memoirs (172) 11-34
The seismologic methods most commonly used in studies of earthquakes and the structure of the continental lithosphere are reviewed in three main sections: earthquake source parameter determinations, the determination of earth structure using natural sources, and controlled-source seismology. The emphasis in each section is on a description of data, the...
