Hydrogeology and groundwater quality of the glaciated valleys of Bradford, Tioga, and Potter Counties, Pennsylvania
John H. Williams, Larry E. Taylor, Dennis J. Low
1998, Water Resource Report 68
The most important sources of groundwater in Bradford, Tioga, and Potter Counties are the stratified-drift aquifers. Saturated sand and gravel primarily of outwash origin forms extensive unconfined aquifers in the valleys. Outwash is underlain in most major valleys by silt, clay, and very fine sand of lacustrine origin that comprise...
Release of metamorphosed juveniles by the green floater, Lasmigona subviridis
W.A. Lellis, T.L. King
1998, Triannual Unionid Report 16
No abstract available....
General philosophy 5: Concerning nonuniqueness
D. A. Chapin
1998, Book chapter, Geologic applications of gravity and magnetics: Case histories
There are models we might like to accept that just dont fit gravity, magnetic, or electrical data. This benefit of modeling is important. It forces the interpreter to prove that an interpretation is possible, and it eliminates impossible models even seismic models. A simple depth estimate may be all the...
General philosophy 3: Concerning modeling
D. A. Chapin
1998, Book chapter, Geologic applications of gravity and magnetics: Case histories
The trend toward modeling is a healthy change from the days when “prospects” were located solely on the basis of closures on residual maps of mysterious and sometimes secret origin. Although residual maps are valuable for helping us notice unusual relationships, the business of exploration has become less tolerant of...
General philosophy 4
D. A. Chapin
1998, Book chapter, Geologic applications of gravity and magnetics: Case histories
I offer these statements about the interpretation process:A contractor's job often consists of enhancing potential-field data to make them as interpretable as possible (by either the contractor or the client). In getting data ready for interpretation, I like to confine the work to “atural processes” and avoid arbitrary processes.I see...
Sources of magnetic anomalies over a sedimentary basin: preliminary results from the coastal plain of the Arctic National Wildlife Refuge, Alaska
J. D. Phillips, R. W. Saltus, R. L. Reynolds
1998, Book chapter, Geologic applications of gravity and magnetics: case histories
No abstract available....
Velocities of the Pine Island, Thwaites, and smaller glaciers along the Marie Byrd Land coast, West Antarctica
Christina E. Rosanova, Baerbel K. Lucchitta, Jane G. Ferrigno
1998, Annals of Glaciology (27) 47-53
Average velocities for time intervals ranging from < 1 to 15 years were measured by tracking ice-surface patterns on sequential Landsat and European Remote-sensing Satellite synthetic aperture radar images. Velocities ofThwaites Glacier range from 2.2 km a−1 above the grounding line to 3.4 km a−1 at the limit of measurements...
Summary of ground-water quality in West Virginia
M.V. Mathes, Mark D. Kozar, David P. Brown
1998, Report
Water-quality data for the 28 sites in the West Virginia ambient ground-water-quality network and for wells in the U.S. Geological Survey National Water Information System (NWIS) data base for West Virginia were analyzed statistically to identify any water-quality trends and relations and to compare data from the two data sets....
The reproductive success of lake herring in habitats near shipping channels and ice-breaking operations in the St. Marys River, Michigan, USA
Marc A. Blouin, M.M. Kostich, T. N. Todd, J.F. Savino
1998, Book chapter, Biology and management of Coregonid fishes -- 1996
A study of the reproductive success of lake herring (Coregonus artedi) in the St. Marys River was conducted in the winters and springs of 1994, 1995, and 1996. The St. Marys River connects Lake Superior to the lower Great Lakes making it an important route for ship traffic. Recent pressure...
The collection of clear-water contraction and abutment scour data at selected bridge sites in the coastal plain and piedmont of South Carolina
Stephen T. Benedict, Andy W. Caldwell
S. R. Abt, editor(s)
1998, Conference Paper, Water Resources Engineering
Clear-water contraction and abutment scour data were collected at 128 bridge sites in South Carolina. In the sandy soils of the Coastal Plain, clear-water-scour data were collected at 63 sites (scour depths ranged from 0.4 to 7.2 meters.) In the clayey soils of the Piedmont, clear-water-scour data were collected at...
Biogeochemical cycles of nitrogen, phosphorus, and sulfur: Natural distributions and response to disturbance
M.E. McClain, Richard E. Bilby, F.J. Triska
R. Naiman, editor(s)
1998, Book chapter, The ecology and management of rivers and streams in the Pacific Northwest Ecoregion
No abstract available. ...
Effects of flooding regime, mycorrhizal inoculation and seedling treatment type on first-year survival of Nuttal Oak (Quercus nuttallii Palmer)
Virginia Burkett, Hans Williams
1998, Conference Paper, Proceedings of the Ninth Biennial Southern Silvicultural Research Conference
Three different types of Nuttall oak (Quercus nuttallii Palmer) seedlings were planted on floodprone, former cropland in Mississippi, Louisiana, and Texas. The three types of 1+0 seedlings planted at each site in January and February of 1995 were bareroot seedlings, seedlings grown in 164 square centimeters plastic containers, and container grown seedlings...
Sources and age of aquatic humus
Diane M. McKnight, George R. Aiken
1998, Book chapter, Aquatic humic substances: Ecology and biogeochemsitry
As aquatic scientists have recognized the diversity of processes controlled by or dependent upon aquatic humus, it has become important to learn more about the genesis, chemical properties, and concentration of humic substances in aquatic ecosystems. There are three classes of aquatic humus (fulvic acids, humic acids, and humin), all...
Buoyancy characteristics of the bloater (Coregonus hoyi) in relation to patterns of vertical migration and acoustic backscattering
Guy W. Fleischer, Leslie M. TeWinkel
1998, Book chapter, Biology and management of Coregonid fishes -- 1996
Acoustic studies in Lake Michigan found that bloaters (Coregonus hoyi) were less reflective per size than the other major pelagic species. This difference in in situ acoustic backscattering could indicate that the deep-water bloaters have compressed swimbladders for much of their vertical range with related implications on buoyancy. To test...
The compilation and application of aeromagnetic data for hydrocarbon exploration in interior Alaska
J.F. Meyer Jr., L.J. Racic, R. W. Saltus
1998, Book chapter, Geologic applications of gravity and magnetics: case histories
No abstract available....
Characterization of an old-growth bottomland hardwood wetland forest in Northeast Texas: Harrison Bayou
Laurence C. Walker, Thomas Brantley, Virginia Burkett
1998, Book chapter, Wilderness and natural areas in Eastern North America : Research, management and planning
Most wetland losses in the southern region over the past 200 years have occurred in bottomland hardwood forests. By 1980 the original extent of palustrine bottomland in Texas had been reduced by 63%, from roughly 16 to 6 million acres. Additional losses have occurred during more recent years as a result of conversion...
Mineral exploration of Bi'r Warshah, Urghub Warshah, and Jabal Hathah West gold prospects, Kingdom of Saudi Arabia
James E. Elliott, Mabrouk Basahel, Ahmed Zamzami, Abdulla Al Eissa, Mahmoud Al Shanti
1998, Book
No abstract available....
Biology and management of Canada geese
D. H. Rusch, M.D. Samuel, D.D. Humburg, B.D. Sullivan
1998, Book
No abstract available....
A report of field surveys for the Transantarctic Mountains Aerogeophysical Research Activities (TAMARA) Program
Carol A. Finn, Detlef Damaske, Terry Wilson
1998, Antarctic Journal of the United States (33) 348-350
No abstract available....
Radiogenic isotopes and the Eastern Mineral Resources Program of the U.S. Geological Survey
Robert A. Ayuso
1998, Report
Radiogenic isotope geology relies on a small group of naturally occurring but unstable elements that naturally produce energy and disintegrate or decay to more stable atoms of different elements. Because this phenomenon occurs at a known rate, is unaffected by most physical and chemical processes, and takes place over periods...
Carolina slate belt gold deposits in Virginia, North Carolina, South Carolina, and Georgia
Robert A. Ayuso
1998, Report
The Southeastern United States, in particular, the Carolina slate belt of Virginia, North Carolina, South Carolina, and Georgia, has been an important region of mineral production (fig. 1). This region is thought to have major potential for containing large undiscovered deposits of gold and silver, as well as copper, lead,...
Phreatophyte influence on reductive dechlorination in a shallow aquifer containing TCE
Roger W. Lee, Sonya A. Jones, Eve L. Kuniansky, Gregory J. Harvey, Sandra M. Eberts
Godage B. Wickramanayake, Robert E. Hinchee, editor(s)
1998, Conference Paper, Bioremediation and phytoremediation: chlorinated and recalcitrant compounds: the First International Conference on Remediation of Chlorinated and Recalcitrant Compounds, Monterey, California, May 18-21, 1998
Tectonic geomorphology and paleoseismology of the Septentrional fault system, Dominican Republic
Paul Mann, Carol S. Prentice, G. Burr, Luis R. Pena, F. W. Taylor
Paul Mann, James F. Dolan, editor(s)
1998, Book chapter, Active Strike-Slip and Collisional Tectonics of the Northern Caribbean Plate Boundary Zone
No abstract available....
Use of 13C NMR and FTIR for elucidation of degradation pathways during natural litter decomposition and compositing. IV. Characterization of humic and fulvic acids extracted from senescent leaves
Robert L. Wershaw, K. R. Kennedy
1998, Book chapter, Humic substances structures, properties and uses
No abstract available. ...
Regional characteristics, tilt domains, and extensional history of the later Cenozoic Basin and Range Province, western North America
John H. Stewart
James E. Faulds, John H. Stewart, editor(s)
1998, Book chapter, Accommodation zones and transfer zones; the regional segmentation of the Basin and Range Province
No abstract available....
