Plan of study to determine the effect of changes in herbicide use on herbicide concentrations in Midwestern streams, 1989-94
Donald A. Goolsby, Laurie L. Boyer, William A. Battaglin
1994, Open-File Report 94-347
An approach was developed to determine if recent changes in the use of herbicides has affected herbicide concentrations in Midwestern streams. This approach also provides a plan to determine if the abnormally high rainfall and flooding in 1993 has an effect on nitrate concentrations in 1994 in streams that flooded...
Geologic map of the Long Valley quadrangle, Coconino County, Arizona
Gordon Whitney Weir, George E. Ulrich, L. David Nealey
1994, Geologic Quadrangle 1735
Geologic map of the Monte Cristo Range area, Esmeralda and Mineral counties, Nevada
John Harris Stewart, Patrick C. Kelleher, E.A. Zorich
1994, Miscellaneous Field Studies Map 2260
Geologic map of the Montara Mountain and San Mateo 7-1/2' quadrangles, San Mateo County, California
E. H. Pampeyan
1994, IMAP 2390
No abstract available....
Geologic map of the Norris quadrangle, Madison County, Montana
Karl S. Kellogg
1994, Geologic Quadrangle 1738
Geologic map of the Omak Lake 15' quadrangle, Okanogan County, Washington
John W. Goodge, Vicki L. Hansen
1994, Geologic Quadrangle 1726
Mapping the solar system
Water Resources Division, U.S. Geological Survey
1994, IMAP 2447
Quaternary Geologic Map of the Lake Nipigon 4 Degrees x 6 Degrees Quadrangle, United States and Canada
David S. Fullerton, William R. Farrand
David S. Fullerton, editor(s)
1994, IMAP 1420(NM-16)
The Quaternary Geologic Map of the Lake Nipigon 4 degree x 6 degree Quadrangle was mapped as part of the Quaternary Geologic Atlas of the United States. The atlas was begun as an effort to depict the areal distribution of surficial geologic deposits and other materials that accumulated or formed...
Vertical structure of mean cross-shore currents across a barred surf zone
John W. Haines, Asbury H. Sallenger Jr.
1994, Journal of Geophysical Research C: Oceans (99) 14223-14242
Mean cross-shore currents observed across a barred surf zone are compared to model predictions. The model is based on a simplified momentum balance with a turbulent boundary layer at the bed. Turbulent exchange is parameterized by an eddy viscosity formulation, with the eddy viscosity Aυ independent of time and the vertical...
Decade-scale trend in sea water salinity revealed through d18O analysis of Montastraea annularis annual growth bands
Robert B. Halley, Peter K. Swart, Richard E. Dodge, J. Harold Hudson
1994, Bulletin of Marine Science (54) 670-678
Stable oxygen isotope ratios (1)180) of coral skeletons are influenced by ambient water temperature and by the oxygen isotope ratio in the surrounding sea water, which, in turn, is linked to evaporation (salinity) and precipitation. To investigate this relationship more thoroughly, we collected hourly temperature data from the Hen and...
Geologic map of the Chief Mountain quadrangle, Lincoln County, Nevada
Peter D. Rowley, R. R. Shroba, F. W. Simonds, K. J. Burke, G.J. Axen, S.D. Olmore
1994, Geologic Quadrangle 1731
Tonsteins and clay-rich layers in coal-bearing intervals of the Eocene Manning formation, east-central Texas
Leslie F. Ruppert, Peter D. Warwick, Sharon S. Crowley, James Pontolillo
1994, Gulf Coast Association of Geological Societies Transactions (44) 649-656
Six samples from clay-rich intervals in the coal-bearing upper part of the Eocene Manning Formation were analyzed by scanning-electron microscopy and energy-dispersive X-ray fluorescence to determine the origin of minerals in the samples. Two samples were from surface-mine exposures of the 3500 coal bed near Bryan, Texas, and the remaining...
Geologic map of the Mahoney Butte quadrangle, Blaine County, Idaho
Betty Skipp, Wayne Everett Hall, P. K. Link
1994, Geologic Quadrangle 1742
Seismology; the Northridge earthquake and its aftershocks
E. Hauksson, L.M. Jones
1994, Earthquakes & Volcanoes (USGS) (25) 18-30
New recording package for VACM provides sensor flexibility
William J. Strahle, S. E. Worrilow, S. E. Fucile, Marinna A. Martini
1994, Conference Paper, OCEANS '94: 'Oceans Engineering for Today's Technology and Tomorrow's Preservation,' Proceedings
For the past three decades, the VACM has been a standard for ocean current measurements. A VACM is a true vector-averaging instrument that computes north and east current vectors and averages temperature continuously over a specified interval. It keeps a running total of rotor counts, and records one-shot samples of...
Retention of web tags and plasticine-filled leg bands applied to day-old ducklings
Peter Blums, Aivars Mednis, James D. Nichols
1994, Journal of Wildlife Management (58) 76-81
A new plasticine-filled leg band was developed for use in banding dayold ducklings. These bands permit inference about early survival that is not possible from banding of older young in standard operations. Two double-marking experiments with web tags and the new leg bands indicated a high retention rate for the...
Fluid expulsion sites on the Cascadia accretionary prism: mapping diagenetic deposits with processed GLORIA imagery
Bobb Carson, Erol Seke, Valerie F. Paskevich, Mark L. Holmes
1994, Journal of Geophysical Research B: Solid Earth (99) 11959-11969
Point-discharge fluid expulsion on accretionary prisms is commonly indicated by diagenetic deposition of calcium carbonate cements and gas hydrates in near-surface (<10 m below seafloor; mbsf) hemipelagic sediment. The contrasting clastic and diagenetic lithologies should be apparent in side scan images. However, sonar also responds to variations in bottom slope,...
Antifouling leaching technique for optical lenses
William J. Strahle, C. L. Perez, Marinna A. Martini
1994, Conference Paper, OCEANS '94: 'Oceans Engineering for Today's Technology and Tomorrow's Preservation,' Proceedings
The effectiveness of optical lenses deployed in water less than 100 m deep is significantly reduced by biofouling caused by the settlement of macrofauna, such as barnacles, hydroids, and tunicates. However, machineable porous plastic rings can be used to dispense antifoulant into the water in front of the lens to...
Submarine canyon initiation by downslope-eroding sediment flows: Evidence in late Cenozoic strata on the New Jersey continental slope
Lincoln F. Pratson, William B. F. Ryan, Gregory S. Mountain, David C. Twichell
1994, Geological Society of America Bulletin (106) 395-412
Multibeam bathymetry and seismic reflection profiles of the New Jersey continental slope reveal a series of abandoned and now-buried submarine canyons that have apparently influenced the development of modern canyons. The buried canyons are infilled along nine slope-wide unconformities separating upper-middle Miocene to Pleistocene sediments that thin downslope. Canyons...
Lake-level history of Lake Michigan for the past 12,000 years: the record from deep lacustrine sediments
Steven M. Colman, Richard M. Forester, Richard L. Reynolds, Donald S. Sweetkind, John W. King, Paul Gangemi, Glenn A. Jones, Loyd D. Keigwin, David S. Foster
1994, Journal of Great Lakes Research (20) 73-92
Collection and analysis of an extensive set of seismic-reflection profiles and cores from southern Lake Michigan have provided new data that document the history of the lake basin for the past 12,000 years. Analyses of the seismic data, together with radiocarbon dating, magnetic, sedimentologic, isotopic, and paleontologic studies of...
Lake Michigan's late Quaternary limnological and climate history from ostracode, oxygen isotope, and magnetic susceptibility
Richard M. Forester, Steven M. Colman, Richard L. Reynolds, Loyd D. Keigwin
1994, Journal of Great Lakes Research (20) 93-107
The limnology of Lake Michigan has changed dramatically since the late Pleistocene in response to the expansion and contraction of continental glaciers, to differential isostatic rebound, and to climate change. The lake sediment's stratigraphic trends, magnetic susceptibility, δ18O, and ostracode species abundance ratios provide criteria to identify the lake's response...
Seismic images of a tectonic subdivision of the Greenville Orogen beneath lakes Ontario and Erie
D. A. Forsyth, Bernd Milkereit, A. Davidson, S. Hanmer, Deborah R. Hutchinson, W. J. Hinze, R.F. Mereu
1994, Canadian Journal of Earth Sciences (31) 229-242
New seismic data from marine air-gun and Vibroseis profiles in Lake Ontario and Lake Erie provide images of subhorizontal Phanerozoic sediments underlain by a remarkable series of easterly dipping reflections that extends from the crystalline basement to the lower crust. These reflections are interpreted as structural features of crustal-scale subdivisions...
Efficacy of heavy-metal capture by clinoptilolite-rich rocks from heavy-metal-polluted water in five drainages in Colorado
G. A. Desborough
1994, Open-File Report 94-140
Prehistoric Alaska: The land
Frederic H. Wilson, Florence R. Weber
Penny Rennick, editor(s)
1994, Alaska Geographic (21) 6-23
Many Alaskans know the dynamic nature of Alaska’s landscape firsthand. The 1964 earthquake, the 1989 eruption of Mount Redoubt volcano, the frequent earthquakes in the Aleutians and the ever-shifting meanders of the Yukon and Kuskokwim rivers remind them of constant changes to the land. These changes are part of the...
Regional Aquifer-System Analysis Program of the U.S. Geological Survey, 1978-1992
Ren Jen Sun, Richard H. Johnston
1994, Circular 1099
The major ground-water systems of the United States have been investigated by the U.S. Geological Survey (USGS) through its Regional Aquifer-System Analysis (RASA) Program. During the first 15 years of the program (1978-92), 25 regional aquifer systems, including the most heavily pumped aquifers in the Nation, were intensively studied. As...
