**1**5N-NMR INVESTIGATION OF HYDROXYLAMINE DERIVATIZED HUMIC SUBSTANCES.
Kevin A. Thorn, Jeffrey B. Arterburn, Michael A. Mikita
1986, Conference Paper, National Meeting - American Chemical Society, Division of Environmental Chemistry
Humic substances are the most abundant naturally occurring refactory organic compounds in soils and water. They have a broad range of physical, chemical and physiological properties. In soils, humic substances contribute to the cation exchange capacity, help maintain the physical structure, and play a role in plant growth and nutrition....
Radiocarbon studies of latest Pleistocene and Holocene lava flows of the Snake River Plain, Idaho: Data, lessons, interpretations
M. A. Kuntz, E.C. Spiker, M. Rubin, D.E. Champion, R.H. Lefebvre
1986, Quaternary Research (25) 163-176
Latest Pleistocene-Holocene basaltic lava fields of the Snake River Plain, Idaho, have been dated by the radiocarbon method. Backhoe excavations beneath lava flows typically yielded carbon-bearing, charred eolian sediment. This material provided most of the samples for this study; the sediment typically contains less than 0.2% carbon. Charcoal fragments were...
Regression approximations for transport model constraint sets in combined aquifer simulation-optimization studies
William M. Alley
1986, Water Resources Research (22) 581-586
Problems involving the combined use of contaminant transport models and nonlinear optimization schemes can be very expensive to solve. This paper explores the use of transport models with ordinary regression and regression on ranks to develop approximate response functions of concentrations at critical locations as a function of pumping and...
Air abrasion experiments in U-Pb dating of zircon
S. S. Goldich, L. B. Fischer
1986, Chemical Geology (58) 195-215
Air abrasion of zircon grains can remove metamict material that has lost radiogenic Pb and zircon overgrowths that were added during younger events and thereby improve the precision of the age measurements and permit closer estimates of the original age. Age discordance...
Notes on sedimentation activities calendar year 1985
U.S. Interagency Advisory Committee on Water Data- Subcommittee on Sedimentation
1986, Report
This report is a digest of information furnished by Federal agencies conducting sedimentation investigations. The decision to publish the report was made in 1946, from a proposal by the Chairman of the Federal Interagercy River Basin Committee, Subcommittee on Ground Water. The subcommittee approved the proposal and agreed to issue...
Ground Water
Water Resources Division, U.S. Geological Survey
1986, Report
Some water underlies the Earth's surface almost everywhere, beneath hills, mountains,plains, and deserts. It's not always accessible, or fresh enough for use without treatment, and it's sometimes difficult to locate or to measure and descri be. This water may occur close to the land surface, as in a marsh, or...
Differential dissolution of a Pleistocene reef in the groundwater mixing zone of coastal Yucatan, Mexico
W. Back, B.B. Hanshaw, J.S. Herman, J. N. Van Driel
1986, Geology (14) 137-140
Mixing of fresh groundwater with subterranean Caribbean seawater generates a highly reactive geochemical zone that enhances aragonite and calcite dissolution and permits neomorphism of aragonite....
Gas analyses from the Pu'u O'o eruption in 1985, Kilauea volcano, Hawaii
L. P. Greenland
1986, Bulletin of Volcanology (48) 341-348
Volcanic gas samples were collected from July to November 1985 from a lava pond in the main eruptive conduit of Pu'u O'o from a 2-week-long fissure eruption and from a minor flank eruption of Pu'u O'o. The molecular composition of these gases is consistent with thermodynamic equilibrium at a temperature...
Physical and chemical characteristics of water in coal-mine ponds of eastern Oklahoma.
S. P. Blumer, L. J. Slack
1986, Oklahoma Geology Notes (46) 128-134
Coal-mine ponds cover 4000 acres and have a storage capacity of about 100 000 acre-feet. They are important wild-life habitats and contribute locally to agricultural and municipal water supply. The physical and chemical properties of the water are very variable. By and large, the pond waters showed a lack of...
Catastrophic flooding and eruption of ash-flow tuff at Medicine Lake volcano, California
J.M. Donnelly-Nolan, K.M. Nolan
1986, Geology (14) 875-878
Catastrophic flooding has eroded a discontinuous network of oversized anastomosing channels on the northwest flank of the Medicine Lake volcano. Most of these previously unrecognized channels were cut into an andesitic ash-flow tuff; boulders as large as 2 m in intermediate diameter were...
Minerals, lands, and geology for the common defence and general welfare, Volume 3, 1904-1939 : A history of geology in relation to the development of public-land, federal-science, and mapping policies and the development of mineral resources in the United States from the 25th to the 60th year of the U.S. Geological Survey
Mary C. Rabbitt
1986, Book
Mrs. Rabbitt's third volume covers the years 1904 to 1939, from the beginning of the conservation movement under Theodore Roosevelt to the beginning of World War II. From a national perspective, these were years of great development and change in the use of energy, trouble in the coal industry, and...
What won't Turnstones eat?
Robert E. Gill Jr.
1986, British Birds (79) 402-403
The Turnstone Arenaria interpres probably has one of the most varied diets of any wader species. Besides the 'normal' foods taken (see, e.g., Prater 1972, Nettleship 1973, Jones 1975), a considerable variety of 'unusual' foods and feeding behaviours has also been reported. Items taken include soap, gull excrement, dog food,...
Relationship of grade, tonnage, and basement lithology in volcanic-hosted epithermal precious-and base-metal quartz-adularia-type districts
D.L. Mosier, Donald A. Singer, T. Sato, N.J. Page
1986, Mining Geology (36)
Examination of grades, tonnages, and basement rocks for 88 epithermal precious- and base-metal quartz-adularia-type districts in North, Central, and South America, and Japan reveals that the type of basement rock below the mineralized veins is useful for predicting grade and size of deposits. Epithermal districts overlying basement with salt and...
A sublittoral population of Pleurophycus gardneri Setchell and Saunders 1900 (Phaeophyceae: Laminariaceae) in central California
Glenn R. VanBlaricom, Daniel C. Reed, Christopher Harrold, James L. Bodkin
1986, Bulletin of the Southern California Academy of Sciences (85) 120-122
Published distributional records for the stipitate kelp Pleurophycus gardneri Setchell and Saunders 1900 (Phaeophyceae: Laminariaceae) indicae a geographic range from Montague Island (59°58’N, 147°22W), Alaska to Fort Bragg (39°27’N, 123°47’W), California (Druehl 1969, 1970; Kjeldsen 1972). P. gardneri is found primarily in rocky intertidal and shallow subtidal locations (Scagel 1967;...
Seismic Computerized Alert Network
Henry Spall, editor(s)
1986, Earthquakes & Volcanoes (USGS) (18) 153-153
In 1985 the USGS devised a model for a Seismic Computerized Alert Network (SCAN) that would use continuous monitoring of seismic data from existing types of instruments to provide automatic, highly-reliable early warnings of earthquake shaking. In a large earthquake, substantial damaging ground motions may occur at great distances from...
Potentiometric map of the Meridian-Upper Wilcox aquifer in Mississippi, fall 1983
Daphne Darden
1986, Water-Resources Investigations Report 86-4018
The Meridian-upper Wilcox aquifer consists of the Meridian Sand member of the Tallahatta Formation and the uppermost sand beds of the Wilcox Group. Thickness of the aquifer ranges from 50 ft to 500 ft. Precipitation recharges the Meridian-upper Wilcox in the outcrop area, which extends from Benton County, MS, in...
Location of potential ground-water quality monitoring wells, Pensacola 1° by 2° quadrangle, Florida
Martha E. Thagard, Paul R. Seaber
1986, Water-Resources Investigations Report 85-4139
No abstract available....
Location of potential ground-water quality monitoring wells, Tarpon Springs 1° by 2° quadrangle, Florida
Martha E. Thagard, Paul R. Seaber
1986, Water-Resources Investigations Report 85-4142
No abstract available....
Location of potential ground-water quality monitoring wells, Valdosta 1° by 2° quadrangle, Florida
Martha E. Thagard, Paul R. Seaber
1986, Water-Resources Investigations Report 85-4143
No abstract available....
Potentiometric surface map of the Winona-Tallahatta aquifer in northwestern Mississippi, fall 1983
Daphne Darden
1986, Water-Resources Investigations Report 86-4146
No abstract available....
Transport of chloride ion in a water-unsaturated soil exhibiting anion exclusion
Ronald V. James, Jacob Rubin
1986, Soil Science Society of America Journal (50) 1142-1149
Miscible displacement techniques were used to create Cl- concentration profiles in unsaturated laboratory columns of Delhi sand (Typic Xeropsamments), each having a nearly uniform water content. The three steady flow rates used resulted in three different, average water contents. Chloride concentrations near the top of the column were smaller and...
Waterfowl harvest at Tule Lake National Wildlife Refuge, 1936-41
D.S. Gilmer, J.M. Hicks, James C. Bartonek, E.H. McCollum
1986, California Fish and Game (72) 132-143
Waterfowl harvest at Tule Lake National Wildlife Refuge (NWR) for the 6-yr period 1936-41 is described and compared with a recent (1978-83) period. During the early period 46,987 geese and 76,143 ducks were bagged during 48,610 hunter-visits. Hunting seasons were 30 to 60 d in length. Greater White-fronted Geese Anser...
Location of potential ground-water quality monitoring wells, Gainesville by 1° x 2° quadrangle, Florida
Martha E. Thagard, Paul R. Seaber
1986, Water-Resources Investigations Report 85-4134
No abstract available....
Jabal Silsilah tin prospect, Najd region, Kingdom of Saudi Arabia
du Bray
1986, Journal of African Earth Sciences (4)
A significant Sn deposit at Jabal Silsilah (26°07′N, 42°41′E), a prominent ring complex in the NE Arabian Shield, is associated with greisen in flat-topped cupolas of a highly evolved, zinnwaldite- and topaz-bearing alkali-feldspar granite. This granite is peraluminous, enriched in...
Geology and tin-greisen mineralization of the Akash granite, northern Arabian Shield
K.S. Kellogg, C. W. Smith
1986, Journal of African Earth Sciences (4) 205-210
The western margin of the postorogenic Akash granite, 30 km E of Ha'il in the northern Arabian Shield, is greisenized and contains anomalous concentrations of Sn. The pluton intrudes metamorphic and intrusive rocks, and crops out as a 10 by...
