A detailed taxonomy of Upper Cretaceous and lower Tertiary Crassatellidae in the eastern United States: An example of the nature of extinction at the boundary
G. Lynn Wingard
1993, Professional Paper 1535
Current theories on the causes of extinction at the Cretaceous-Tertiary boundary have been based on previously published data; however, few workers have stopped to ask the question, 'How good is the basic data set?' To test the accuracy of the published record, a quantitative and qualitative analysis of the Crassatellidae...
Significant bed elevation changes related to Gulf Stream dynamics on the South Carolina continental shelf
G. Gelfenbaum, M. Noble
1993, Continental Shelf Research (13) 385-405
Photographs of the seabed taken from an instrumented bottom tripod located approximately 100 km east of Charleston, South Carolina, reveal bed elevation changes of over 20 cm between July and November 1978. The tripod was in 85 m of water and was equipped with two current meters at 38.7 and...
Radionuclides in ground water of the Carson River Basin, western Nevada and eastern California, U.S.A.
J. M. Thomas, A. H. Welch, M.S. Lico, J. L. Hughes, R. Whitney
1993, Applied Geochemistry (8) 447-471
Ground water is the main source of domestic and public supply in the Carson River Basin. Ground water originates as precipitation primarily in the Sierra Nevada in the western part of Carson and Eagle Valleys, and flows down gradient in the direction of the Carson River through Dayton and Churchill...
First collection of rudd, Scardinius erythrophthalmus (Cyprinidae), in the New River, West Virginia
R.S. Easton, D.J. Orth, N.M. Burkhead
1993, Journal of Freshwater Ecology (8) 263-264
We collected the first rudd, Scardinius erythrophthalmus (Cyprinidae), from the New (Kanawha) River drainage, West Virginia. The rudd has now been reported from 12 states (Arkansas, Kansas, Illinois, Massachusetts, Maine, Missouri, New York, Oklahoma, Virginia, Wisconsin, and West Virginia) and several major river systems. The rapid spread of the rudd has apparently...
Oxygen buffering of Kilauea volcanic gases and the oxygen fugacity of Kilauea basalt
T.M. Gerlach
1993, Geochimica et Cosmochimica Acta (57) 795-814
Volcanic gases collected during episode 1 of the Puu Oo eruption along the east rift zone of Kilauea Volcano, Hawaii, have uniform C-O-H-S-Cl-F compositions that are sharply depleted in CO2. The CO2-poor gases are typical of Type II volcanic gases (gerlach and Graeber, 1985) and were emitted from evolved magma...
Petrology and U-Pb geochronology of buried Avalonian plutonic rocks on southeastern Cape Cod
G. W. Leo, J.K. Mortensen, B. Barreiro, J. D. Phillips
1993, Atlantic Geology (29) 103-113
Plutonic rocks have been intersected by two separate drill holes on southeastern Cape Cod. Hole CC2 is located at Chatham Harbor about 7 km south of the Nauset anomaly, an east-northeast-trending magnetic lineament that was considered to separate the distinct plutonic zones of Avalon terrane. This drill hole intersected weakly...
Chapter 4: Cretaceous thrusting and Neogene block rotation in the northern Portneuf Range region, southeastern Idaho
Karl S. Kellogg
1992, Memoir of the Geological Society of America (179) 95-113
The Putnam thrust has long been recognized as an important Mesozoic structure in the northern Portneuf Range, southeastern Idaho. At most localities, the thrust places Ordovician rocks above Permian and Pennsylvanian rocks, although near its southeastern extent, it ramps laterally downsection to the southeast. At its southeasternmost exposures, Cambrian rocks...
A theoretical model for the flux of radon from rock to ground water
Richard B. Wanty, Errol P. Lawrence, Linda C. Gundersen
1992, GSA Special Papers (271)
A model is derived to predict the abundance of 222Rn in ground water in contact with a rock of known uranium content. The model assumes that secular equilibrium is attained in the rock-water system as a whole, but is independent of any microscopic geometric properties of the system. The key...
A postulated new source for the White River Ash, Alaska: A section in Geologic studies in Alaska by the US. Geological Survey, 1990
Robert G. McGimsey, Donald H. Richter, Gregory D. DuBois, T. P. Miller
1992, Bulletin 1999
The White River Ash (Lerbekmo and others, 1968), product of two of the most voluminous pyroclastic eruptions in North America in the past 2,000 yr, blankets much of the Yukon Terrtory, Canada, and a small part of adjoining eastern Alaska. Lerbekmo and Campbell (1969) narrowed the source of the ash...
Puffins as samplers of juvenile pollock and other forage fish in the Gulf of Alaska
Scott Hatch, Gerald A. Sanger
1992, Marine Ecology Progress Series (80) 1-14
We sampled the nestling diets of tufted puffins (Fratercula cirrhata) and horned puffins (F. corniculata) in 3 years at colonies from the north-central Gulf of Alaska to the eastern Aleutian Islands, Alaska, USA. Overall, tufted puffins consumed (by weight) 41% sandlance (Ammodytes hexapterus), 22% capelin (Mallotus villosus), 19% walleye pollock...
Organochlorines and mercury in osprey eggs from the eastern United States
D. J. Audet, D.S. Scott, Stanley N. Wiemeyer
1992, Journal of Raptor Research (26) 219-224
Organochlorine and mercury concentrations were determined in Osprey eggs collected from Maryland, Virginia, and Massachusetts during 1986-87. DDE concentrations were significantly different among locations. Median DDE concentrations did not decline significantly in eggs from Glenn L. Martin National Wildlife Refuge, Maryland, between 1973 and 1986. The median DDE residue for...
Prevention of eastern equine encephalitis virus in captive cranes
J. W. Carpenter, D.M. Watts, C.L. Crabbs, G.G. Clark, T.W. Scott, D. Docherty, B.B. Pagac, J.M. Dorothy, J.G. Olson, F. J. Dein
Don A. Wood, editor(s)
1992, Book chapter, Proceedings of the 1988 North American Crane Workshop
Geographic patterns in population trends of neotropical migrants in North America
J.R. Sauer, Sam Droege
John M. Hagan III, D.W. Johnston, editor(s)
1992, Book chapter, Ecology and Conservation of Neotropical Migrant Landbirds
We use the route-regression method to estimate the population trends of 100 species of Neotropical migrants using data from the North American Breeding Bird Survey (BBS). We examine long-term (1966-1988) and recent (1978-1988) trends. In the long-term, more species of Neotropical migrants were increasing than were decreasing in...
Speculations on the origin of the North American Midcontinent rift
W.F. Cannon, W. J. Hinze
1992, Tectonophysics (213) 49-55
The Midcontinent rift is an example of lithospheric extension and flood basalt volcanism induced when a new mantle plume arrived near the base of the lithosphere. Very large volumes of basaltic magma were generated and partly erupted before substantial lithospheric extension began. Volcanism continued, along with extension and deep rift...
Beach-ridge development and lake-level variation in southern Lake Michigan
T.A. Thompson
1992, Sedimentary Geology (80) 305-318
The most accurate source of information on lake-level fluctuations in the Great Lakes is the historical record from lake-level gauges. Although it can be semiquantitatively extended back into the late 1700's, the historical record is too short to recognize long-term patterns of lake-level behavior. To extend the historical record, information...
Geology of Keweenawan Supergroup Rocks near the Porcupine Mountains, Ontonagon and Gogebic Counties, Michigan
William F. Cannon, Suzanne W. Nicholson, Cheryl A. Hedgman, Laurel G. Woodruff, Klaus J. Schul
1992, Conference Paper, Institute on Lake Superior Geology, proceedings of the 38th annual meeting
This field trip examines the geology of rocks of the Keweenawan Supergroup (1 .1 Ga) and related intrusive rocks of the Midcontinent rift system (MRS) in the western part of the northern peninsula of Michigan. The combination of stops includes all formations of the Keweenawan Supergroup in this region. Examination...
Hayward fault: Large earthquakes versus surface creep
James J. Lienkaemper, Glenn Borchardt
Glenn Borchardt, Sue E. Hirschfeld, James J. Lienkaemper, Patrick H. McClellan, Patrick L. Williams, Ivan G. Wong, editor(s)
1992, Conference Paper, Proceedings of the second conference on earthquake hazards in the eastern San Francisco Bay area: Special publication 113
The Hayward fault, thought a likely source of large earthquakes in the next few decades, has generated two large historic earthquakes (about magnitude 7), one in 1836 and another in 1868. We know little about the 1836 event, but the 1868 event had a surface rupture extending 41 km along...
Configuration of the base of the Edwards-Trinity aquifer system and hydrogeology of the underlying pre-Cretaceous rocks, west-central Texas
Rene A. Barker, Ann F. Ardis
1992, Water-Resources Investigations Report 91-4071
The Edwards-Trinity aquifer system is underlain by an extensive complex of rocks, ranging from Late Cambrian through Late Triassic in age, that are typically about 10 to perhaps 1,000 times less permeable than those composing the aquifer system. The Cretaceous rocks of the aquifer system are separated from the pre-Cretaceous...
Gloria mosaic of the deep sea floor off the Atlantic coast of the United States
John S. Schlee, William P. Dillon, Peter Popenoe, James M. Robb, Dennis W. O’Leary
1992, Miscellaneous Field Studies Map 2211
This mosaic is a GLORIA (Geological LOng Range Inclined Asdic) view of the deep sea floor off the East Coast of the United States. It covers a surveyed region (fig. 1) of 195,000 square miles, an area nearly as large as Texas. The survey is part of a program to...
Potentiometric surface of the surficial aquifer system, deep zone in eastern Palm Beach County, Florida, May 1-5, 1989
Richard L. Kane
1992, Open-File Report 92-102
No abstract available....
Revisions of stratigraphic nomenclature within the Keweenawan Supergroup of Northern Michigan. Geochemistry, petrography, and volcanology of rhyolites of the Portage Lake volcanics, Keweenaw Peninsula, Michigan
William F. Cannon, Suzanne W. Nicholson
1992, Bulletin 1970-A,B
No abstract available....
The Loma Prieta, California, earthquake of October, 17, 1989: Marina District
Thomas D. O'Rourke, M. G. Bonilla, John Boatwright, Linda C. Seekins, Thomas E. Fumal, Hsi-Ping Liu, Charles S. Mueller, Richard E. Warrick, Robert E. Westerlund, Eugene D. Sembera, Leif Wennerberg, Harry E. Stewart, Ashraf K. Hussein, J. #NAME? Bardet, M. Kapuskar, G. R. Martin, J. Proubet, H. T. Taylor, J.T. Cameron, S. Vahdani, H. Yap, Jonathan W. Pease, Stephen K. Harris, John A. Egan, Charles R. Scawthorn, Keith A. Porter, Frank T. Blackburn
Thomas D. O'Rourke, editor(s)
1992, Professional Paper 1551-F
During the earthquake, a total land area of about 4,300 km2 was shaken with seismic intensities that can cause significant damage to structures. The area of the Marina District of San Francisco is only 4.0 km2--less than 0.1 percent of the area most strongly affected by the earthquake--but its significance...
Hydrogeology and ground-water chemistry of the San Andres-Glorieta aquifer in the Acoma embayment and eastern Zuni uplift, west-central New Mexico
J. A. Baldwin, S. K. Anderholm
1992, Water-Resources Investigations Report 91-4033
No abstract available....
Water Resources Data, New York, Water Year 1991; Volume 1. Eastern New York; Excluding Long Island
Gary D. Firda, Richard Lumia, Patricia M. Murray
1992, Water Data Report NY-91-1
Water resources data for the 1991 water year for New York consist of records of stage, discharge, and water quality of streams; stage; contents, and water quality of lakes and reservoirs; and ground-water levels. This volume contains records for water discharge at 110 gaging stations; stage only at 4 gaging...
Overview of drought and hydrologic conditions in the United States and southern Canada, water years 1986-90
Sandra L. Holmes
1992, Water Supply Paper 2314-B
This report describes the drought and hydrologic conditions in the United States and southern Canada during the 1986-90 water years. This drought, which spread from the Eastern United States, where it was referred to as 'the drought of the century,' through the Midwest to the West Coast, brought to mind...
