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Page 4749, results 118701 - 118725

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Land-use planning: One geologist's viewpoint
E-An Zen
1983, Environmental Conservation (10) 97-104
Planning for the best use of land and its resources should take fully into consideration the long-term consequences of each type of use in order to stretch out most beneficially the well-being of society in the future, and to protect the integrity of the land and its...
Hydrology of the Ferron Sandstone aquifer and effects of proposed surface-coal mining in Castle Valley, Utah, with a section on stratigraphy and a section on leaching of overburden
Gregory C. Lines, Daniel J. Morrissey, Thomas A. Ryer, Richard H. Fuller
1983, Water Supply Paper 2195
Coal in the Ferron Sandstone Member of the Mancos Shale of Cretaceous age has traditionally been mined by underground techniques in the Emery Coal Field in the southern end of Castle Valley in east-central Utah. However, approximately 99 million tons are recoverable by surface mining. Ground water in the Ferron...
Distribution of quaternary radiolaria in the Navarin Basin geologic province, Bering Sea
J. R. Blueford
1983, Deep Sea Research Part A, Oceanographic Research Papers (30) 763-781
Radiolarians from the surface sediments of the Navarin Basin geologic province in the western part of the Bering Sea are more diverse and abundant than previous reports indicate. The shelf is dominated by two spongy radiolarian species groups (Stylochlamydium venustum and Spongotrochus glacialis groups), while the slope has more diversity. The distributions can...
Holocene history of the estuarine area surrounding Portage, Alaska, as recorded in a 93 m core
S. Bartsch-Winkler, A.T. Ovenshine, R. Kachadoorian
1983, Canadian Journal of Earth Sciences (20) 802-820
A 93 m core obtained at Portage, Alaska records four prograding cycles of estuarine deposition for the past 8230 ± 100 years. Analyses of texture, mineralogy, paleontology, and sedimentary structures enable definition of eight lithologic units. Mineralogic studies show that past and present sedimentation at Portage has been largely mud and sand from...
Earthquakes; January-February 1983
W. J. Person
1983, Earthquake Information Bulletin (USGS) (15) 150-156
A minor earthquake occurred in western Nevada on January 9 at 6:59 a.m. PST. The magnitude 3.8 earthquake was located about 16 miles west of Carson City. MM IV effects were noted at Minden. On February 16 at 12:21 a.m. and February 23 at 3:10 a.m. PST, minor earthquakes occurred in...
Seismological programs in Costa Rica
W. Montero
Henry Spall, editor(s)
1983, Earthquake Information Bulletin (USGS) (15) 11-15
At the beginning of the 1970's, a series of programs in seismology were initiated by different Costa Rican institutions, and some of these programs are still in the process of development. The institutions are Insituto Costaricense de Electricidad (ICE)- The Costa Rica Institute of Electricity La Universidad Nacional Autonoma (UNA)- The National...
Impact of changes in land use on the ground-water system in the Sequim-Dungeness Peninsula, Clallam County, Washington
B. W. Drost
1983, Water-Resources Investigations Report 83-4094
A digital-computer model was developed to simulate three-dimensional ground-water flow in aquifers underlying the Sequim-Dungeness peninsula, Clallam County, Washington. Analysis using the model shows that leakage from irrigation ditches is the area 's most important source of ground-water recharge. Termination of the irrigation system would lead to lower heads throughout...
Yellow birds stand out in a crowd
Colleen M. Handel, Robert E. Gill Jr.
1983, North American Bird Bander (8) 6-9
Highly visible auxiliary markers, such as neck collars, nasal saddles, patagial tags, and leg streamers, are used regularly and effectively with banding in studying migration and distribution of large birds (e.g. waterfowl, birds of prey, wading birds). Simply stated, a large bird can accommodate a marker that is large enough...
Memorial to a Black Turnstone: An examplar of breeding and wintering site fidelity
Robert E. Gill Jr., Colleen M. Handel, Leonard A. Shelton
1983, North American Bird Bander (8) 98-101
Most of us who have banded long-distance migrants are aware, through recaptures of individuals, of the high degree of site fidelity exhibited by many bird species. It is not uncommon for a bander to have a marked bird remain in the vicinity of its banding site throughout a season and...
Earthquakes; November-December 1982
W. J. Person
1983, Earthquake Information Bulletin (USGS) (15) 108-112
The months of November and December were quite active, seismically speaking, compared to the preceding months. The most devastating earthquake of the year occurred in Yemen on December 13 and killed hundreds of people. the largest earthquake of the year, a magnitude 7.7, occurred in the Pacific Tonga Islands on...
The effect of variable spring water conditions on mallard reproduction
Gary L. Krapu, A.T. Klett, Dennis G. Jorde
1983, The Auk (100) 689-698
Mallard (Anas platyrhynchos) breeding densities in the prairie pothole habitat of eastern North Dakota during 1961-1980 varied from 2.28 birds/km2 in 1977 to 9.47 birds/km2 in 1963 and were correlated with pond abundance (r = 0.543, P < 0.05). The number of basins used by pairs declined with drought, as...
Seasonal food of juvenile lake trout in U.S. waters of Lake Ontario
Joseph H. Elrod
1983, Journal of Great Lakes Research (9) 396-402
Stomach contents of 3,554 lake trout (Salvelinus namaycush), 100 to 449 mm in total length, captured with bottom trawls during April through October 1978–81 along the south shore of Lake Ontario were examined. Invertebrates appeared to be an important food of lake trout less than 200 mm long but were...
Earthquakes; July-August 1982
W. J. Person
1983, Earthquake Information Bulletin (USGS) (15) 39-41
During this reporting period, there were three major (7.0-7.9) earthquakes all in unpopulated areas. The quakes occurred north of Macquarie Island on July 7, in the Santa Cruz Islands on August 5, and south of Panama on August 19. In the United Stats, a number of earthquakes occurred, but no...
Earthquakes; September-October 1982
W. J. Person
1983, Earthquake Information Bulletin (USGS) (15) 73-76
Seismically speaking the months of September and October were very quiet. There were no major (magnitude 7.0-7.9) earthquakes. Guatemala was struck by a moderate earthquake on September 29 causing fatalities and considerable damage.  In the United States, a number of earthquakes occurred, but only slight damage was reported. ...
Species decline: A perspective on extinction, recovery, and propagation
J. W. Carpenter
1983, Zoo Biology (2) 165-178
This keynote address was presented at the Conference on the Conservation of Endangered Species in Zoological Parks and Aquariums on April 18, 1982 at the National Aquarium in Baltimore. It outlines 1) future trends in the world's environment, resources, and population; 2) factors affecting species decline; 3) reasons for preserving life forms;...
Palaeomagnetism of lower cretaceous tuffs from Yukon-Kuskokwim delta region, western Alaska
B.R. Globerman, R. S. Coe, J. M. Hoare, J. Decker
1983, Nature (305) 516-520
During the past decade, the prescient arguments1-3 for the allochthoneity of large portions of southern Alaska have been corroborated by detailed geological and palaeomagnetic studies in south-central Alaska 4-9 the Alaska Peninsula10, Kodiak Island11,12 and the Prince William Sound area13 (Fig. 1). These investigations have demonstrated sizeable northward displacements for...
Geology of the Devonian black shales of the Appalachian basin
J.B. Roen
1983, Conference Paper, Preprints Symposia
Black shales of Devonian age in the Appalachian basin are a unique rock sequence. The high content of organic matter, which imparts the characteristic lithology, has for years attracted considerable interest in the shales as a possible source of energy. Concurrent with periodic and varied economic exploitations of the black...