Survival of juvenile ring-necked ducks on wetlands of different pH
Daniel G. McAuley, Jerry R. Longcore
1988, Journal of Wildlife Management (52) 169-176
Brood and duckling survival of ring-necked ducks (Aythya collaris) was examined in relation to wetland water chemistry in eastcentral Maine during 1983-85. Daily survival rates (DSR) of broods and ducklings were determined for 381 ducklings from 64 broods by counts of each brood at 6-10-day intervals during broodrearing. Twelve of...
Foods of juvenile ring-necked ducks: Relationship to wetland pH
Daniel G. McAuley, Jerry R. Longcore
1988, Journal of Wildlife Management (52) 177-185
Foods of 37 juvenile ring-necked ducks (Aythya collaris) from 16 different wetlands were examined in eastcentral Maine in 1983-85. Invertebrates made up 70% aggregate dry weight (100% occurrence) of the foods of Class Ia-IIa (≤ 24 days old) ducklings and 32% (86% occurrence) of Class IIb-III (≥ 25 days old)...
The 1987 Whittier Narrows earthquake in the Los Angeles metropolitan area, California
E. Hauksson, Lucile M. Jones, T.L. Davis, L.K. Hutton, Pat Williams, Allison L. Bent, A. Gerald Brady, Paul A. Reasenberg, A.J. Michael, R. F. Yerkes, E. Etheredge, R. L. Porcella, M.J.S. Johnston, G. Reagor, C. G. Bufe, E. Cranswick, A.K. Shakal
1988, Science (239) 1409-1412
The Whittier Narrows earthquake sequence (local magnitude, ML = 5.9), which caused over 358-million dollars damage, indicates that assessments of earthquake hazards in the Los Angeles metropolitan area may be underestimated. The sequence ruptured a previously unidentified thrust fault that may be part of a large system of thrust faults that extends...
Stratigraphic evidence of Holocene faulting in the mid-continent: The Meers fault, southwestern Oklahoma
Richard F. Madole
1988, GSA Bulletin (100) 392-401
Stratigraphic relations and ten 14C ages show that movement occurred on the Meers fault in late Holocene time. Movement on the fault postdates the Browns Creek Alluvium, which began to be deposited between 14,000 and 13,000 yr B.P., and predates the East Cache Alluvium, which was deposited between 800 and 100...
Voluminous submarine lava flows from Hawaiian volcanoes
Robin T. Holcomb, James G. Moore, Peter W. Lipman, R.H. Belderson
1988, Geology (16) 400-404
The GLORIA long-range sonar imaging system has revealed fields of large lava flows in the Hawaiian Trough east and south of Hawaii in water as deep as 5.5 km. Flows in the most extensive field (110 km long) have erupted from the deep submarine segment of Kilauea's east rift zone....
Deformation along the northeast side of Blacktail Mountains salient, southwestern Montana
Russell G. Tysdal
1988, GSA Memoirs (171) 203-215
The Blacktail Mountains salient is a convex-eastward area of stacked Laramide-age thrust faults that trend north and dip west at moderate angles. The thrusts occur in Mississippian to Cretaceous strata above a basement of Archean metamorphic rocks. The northern margin of the salient is delimited by the Jake Canyon fault,...
Changes in the morphometry of Las Vegas Wash and the impact on water quality
Richard A. Roline, James J. Sartoris
1988, Lake and Reservoir Management (4) 135-142
Las Vegas Wash, a natural wash east of Las Vegas, Nevada, carries stormwater, groundwater drainage, and sewage effluent from two sewage treatment plants to Lake Mean. Over 80 percent of the normal discharge of approximately 3.4 m3/s (120 ft3/s) consists of effluent from the City of Las Vegas and...
Estimation of ground-water use for irrigation in eastern Washington using Landsat imagery
Peter C. Van Metre, P. M. Seevers
1988, Conference Paper, Proceedings of the Symposium on Water-Use Data for Water Resources Management
No abstract available....
Paleomagnetic results from the Shasta Bally Plutonic Belt in the Klamath Mountains Province, northern California
Edward A. Mankinen, William P. Irwin, C. Sherman Gromme
1988, Geophysical Research Letters (15) 56-59
Available paleomagnetic data show approximately 100° of clockwise rotation for Permian and Triassic strata of the Eastern Klamath terrane. Jurassic strata of this terrane are rotated approximately 60° clockwise, which is comparable to rotations reported for Jurassic plutons that occur elsewhere in the Klamath Mountains province. Paleomagnetic data obtained during...
Ground-water geochemistry of the Albuquerque-Belen Basin, central New Mexico
S. K. Anderholm
1988, Water-Resources Investigations Report 86-4094
The purpose of this study was to define the areal distribution of different water types, use the distribution to help define the groundwater flow system, and identify processes resulting in differences in groundwater quality in the Albuquerque-Belen Basin in central New Mexico. The chemistry of surface water inflow from adjacent...
Crustal velocities near Coalinga, California, modeled from a combined earthquake/explosion refraction profile
N. Macgregor-Scott, A. Walter
1988, Bulletin of the Seismological Society of America (78) 1475-1490
Crustal velocity structure for the region near Coalinga, California, has been derived from both earthquake and explosion seismic phase data recorded along a NW-SE seismic-refraction profile on the western flank of the Great Valley east of the Diablo Range. Comparison of the two data sets reveals P-wave phases in common...
Using laser micro mass spectrometry with the LAMMA-1000 instrument for monitoring relative elemental concentrations in vitrinite
J.J. Morelli, D.M. Hercules, P.C. Lyons, C.A. Palmer, J.D. Fletcher
1988, Mikrochimica Acta (96) 105-118
The variation in relative elemental concentrations among a series of coal macerals belonging to the vitrinite maceral group was determined using laser micro mass spectrometry (LAMMS). Variations in Ba, Cr, Ga, Sr, Ti, and V concentrations among the coals were determined using the LAMM A-1000 instrument. LAMMS analysis is not...
Composition and stable-isotope geochemistry of natural gases from Kansas, Midcontinent, U.S.A.
P.D. Jenden, K.D. Newell, I.R. Kaplan, W.L. Watney
1988, Chemical Geology (71) 117-147
More than 28??1012 ft.3 (79??1010 m3) of natural gas and 5.3??109 bbl (8.4??108 m3) of oil have been produced in Kansas, U.S.A., from Paleozoic carbonate and sandstone reservoirs on structural uplifts and shallow embayments along the northern margin of the Anadarko basin. A heavily-explored, geologically well-characterized state, Kansas is an...
What is worse than the “big one”?
R. A. Kerr
1988, Earthquakes & Volcanoes (USGS) (20) 213-218
The Whittier Narrows California earthquake sequence (local magnitude, Ml=5.9 or 1 October, 1987), which caused over $358 million damage, indicates that assessments of earthquake hazards in Los Angeles metropolitan area may be underestimated. the sequence ruptured a previously unidentified thrust fault that may be part of a large system of...
Three decades of geochronologic studies in the New England Appalachians
R. E. Zartman
1988, Geological Society of America Bulletin (100) 1168-1180
Over the past 30 years, both isotope geochronology and plate tectonics grew from infancy into authoritative disciplines in the geological sciences. Previously, mountain systems like the Appalachians had been viewed almost entirely in the context of the classical geosyncline, implying a gradualism in stratigraphic and structural change throughout the orogen....
Crustal structure of east central Oregon: Relation between Newberry Volcano and regional crustal structure
R. D. Catchings, Walter D. Mooney
1988, Journal of Geophysical Research (93) 10081-10094
A 180-km-long seismic refraction transect from the eastern High Cascades, across Newberry Volcano, to the eastern High Lava Plains is used to investigate the subvolcanic crustal and upper mantle velocity structure there. Near-surface volcanic flows and sedimentary debris (1.6-4.7 km/s), ranging from 3 to 5 km in thickness, overlie subvolcanic...
Geochemistry of groundwater in tertiary and cretaceous sediments of the southeastern Coastal Plain in eastern Georgia, South Carolina, and southeastern North Carolina
Roger W. Lee, Donald J. Strickland
1988, Water Resources Research (24) 291-303
Geochemical samples of groundwater taken along hydrologic flow paths in eastern Georgia, South Carolina, and southeastern North Carolina, from noncalcareous sand aquifers, largely of Cretaceous age, are dominated by sodium and bicarbonate ions. Calcareous sand aquifers, largely of Tertiary age, contain water whose chemistry is dominated by calcium and bicarbonate...
Curie temperature isotherm analysis and tectonic implications of aeromagnetic data from Nevada
R.J. Blakely
1988, Journal of Geophysical Research Solid Earth (93) 11817-11832
Estimates of the depth to the Curie temperature isotherm in Nevada are in accordance with other regional geologic and geophysical information and together can be explained in the context of present-day tectonism. A method to estimate the depth extent of magnetic sources from the statistical properties of magnetic anomalies was...
Origin and influence of coal mine drainage on streams of the United States
J. D. Powell
1988, Environmental Geology and Water Sciences (11) 141-152
Degradation of water quality related to oxidation of iron disulfide minerals associated with coal is a naturally occurring process that has been observed since the late seventeenth century, many years before commencement of commercial coal mining in the United States. Disturbing coal strata during mining operations accelerates this natural deterioration...
Geothermal gradients in the conterminous United States
M. Nathenson, M. Guffanti
1988, Journal of Geophysical Research Solid Earth (93) 6437-6450
Geothermal gradients from published temperature/depth measurements in drill holes generally deeper than 600 m are used to construct a temperature gradient map of the conterminous United States. The broadly contoured map displays 284 temperature gradients that are applicable to a depth of 2 km. In terms of the number of...
Cooperative federal-state liming research on surface waters impacted by acidic deposition
R.K. Schreiber
1988, Water, Air, & Soil Pollution (41) 53-73
In the eastern and north-central United States, lakes and streams with low acid neutralizing capacity are at risk from acidity. Resource management agencies are interested in developing mitigation strategies that protect or restore fisheries in these waters. Addition of limestone (calcium carbonate) to improve water quality...
Cathodoluminescent bimineralic ooids from the Pleistocene of the Florida continental shelf
R. P. Major, Robert B. Halley, Karen J. Lukas
1988, Sedimentology (35) 843-855
A bored and encrusted late Pleistocene ooid grainstone was recovered from the seafloor at a depth of approximately 40 m on the outer continental shelf of eastern Florida. Ooid cortices are dominantly bimineralic, generally consisting of inner layers of radial magnesian calcite and outer layers of tangential aragonite. Ooid nuclei...
Forecasting California’s earthquakes
R. A. Kerr
1988, Earthquakes & Volcanoes (USGS) (20) 114-119
The first official earthquake forecast for California emphasizes the broad extent of the hazard and the uncertainties involved in predicting the next quakes. For the first time, researchers have reached to a consensus on the threat of large earthquakes to California, things look no worse for Los Angles than before. It...
Carbonate to siliciclastic periplatform sediments: southwest Florida
Charles W. Holmes
1988, Developments in Sedimentology (42) 271-287
Three distinct carbonate deposits have been identified on the slope and adjacent sea floor of the southwestern Florida Platform: (1) reef talus, recognized by shape and location, found on the upper slope of the Yucatan Channel and also east of the Marquesas Keys; (2) hemipelagic sediments, with complex sigmoid-oblique...
Causes of varied sediment gravity flow types on the Alsek Prodelta, northeast Gulf of Alaska
William C. Schwab, Homa J. Lee, Bruce F. Molnia
1988, Marine Geotechnology (7) 317-342
Slope failures and subsequent mass movements have been identified in Holocene glaciomarine sediment on declivities less than 1.3° on the Alsek prodelta, Gulf of Alaska. Isolated collapse features cover less than 10 percent of a nearshore sand deposit, in water depths less than 40 m. In contrast, sediment gravity flow...
