Hydrogeology and simulation of ground-water flow in the Rochester area, southeastern Minnesota, 1987-88
G. N. Delin
1991, Water-Resources Investigations Report 90-4081
Ground-water flow in the St. Peter-Prairie du Chien-Jordan aquifer was studied in a 700 square-mile area surrounding Rochester, Minnesota. The aquifer consisting of sandstone, limestone, and dolomite is locally confined by the Decorah-Platteville-Glenwood sequence of shales and limestones. Regional flow in the aquifer is from a ground-water divide on the...
Comparative petrology of cores from two test wells in the eastern part of the Edwards Aquifer, south-central Texas
Ruth G. Deike
1991, Water-Resources Investigations Report 87-4266
No abstract available. ...
Bibliographies and location maps of publications on aeromagnetic and aeroradiometric surveys for the states east of the Mississippi River and north of the Ohio and Potomac Rivers
Patricia L. Hill
1991, Open-File Report 91-370-C
No abstract available....
Tectonic imbrication and foredeep development in the Penokean orogen, east-central Minnesota: An interpretation based on regional geophysics and the results of test-drilling. The Penokean orogeny in Minnesota and upper Michigan; a comparison of structural geology
D. L. Southwick, G. B. Morey, Timothy B. Holst, L. M. H. Carter
P.K. Sims, editor(s)
1991, Bulletin 1904-C,D
No abstract available....
Paleocene-Eocene boundary: Sedimentation in the Potomac River Valley, Virginia and Maryland: field trip guidebook
Thomas G. Gibson, Laurel M. Bybell, I. G. C. P. Project 308
1991, Book
No abstract available....
Effects of site, landscape features, and fire regime on vegetation patterns in presettlement southern Wisconsin
Lawrence A. Leitner, Christopher P. Dunn, Glenn R. Guntenspergen, F. Stearns, David M. Sharpe
1991, Landscape Ecology (5) 203-217
The presettlement tree cover (1831–33) of 3 townships in a southern Wisconsin landscape was analyzed using original survey records. Four forest types were identified: closed forest, open forest, savanna, and prairie. Comparisons of vegetation types and landscape pattern were made between the east and west sides of the Pecatonica River,...
Geologic map of the Adelphia and Farmingdale quadrangles, Monmouth and Ocean Counties, New Jersey
Peter J. Sugarman, James P. Owens, Laurel M. Bybell
1991, New Jersey Geological Survey Map Series 91-1
No abstract available....
The second Lehigh Tunnel; geology and the New Austrian Tunnelling Method
Jack B. Epstein, Patricia F. Buis
1991, Pennsylvania Geology (22) 2-9
No abstract available....
Depositional patterns of the Mississippi Fan surface: Evidence from GLORIA II and high-resolution seismic profiles
David C. Twichell, Neil H. Kenyon, Lindsay M. Parson, Bonnie A. McGregor
1991, Book chapter
GLORIA long-range side-scan sonar imagery and 3.5-kHz seismic-reflection profiles depict a series of nine elongate deposits with generally high-backscatter surfaces covering most of the latest fanlobe sequence of the Mississippi Fan in the eastern Gulf of Mexico. The youngest deposit is a “slump” that covers a 250 by 100 km...
E-4 Central Kentucky to the Carolina Trough
Douglas W. Rankin, William P. Dillon, D.F.B. Black, S.E. Boyer, David L. Daniels, R. Goldsmith, J. A. Grow, J. Wright Horton Jr., Deborah R. Hutchinson, Kim D. Klitgord, R. C. McDowell, D.J. Milton, J. P. Owens, Jeffrey D. Phillips, K.C. Bayer, John R. Butler, D.W. Elliott, Robert C. Milici
1991, Book
E-4 is one of eight Geodynamics transects that cross the Atlantic margin of North America between Georgia and Newfoundland. Five of the transects are in the United States and three are in Canada. Transect E-4, which is 110 km wide and more than 1,100 km long, extends from the stable...
The velocity field along the San Andreas Fault in central and southern California
Michael Lisowski, James C. Savage, W.H. Prescott
1991, Journal of Geophysical Research B: Solid Earth (96) 8369-8389
The velocity field within a 100‐km‐broad zone centered on the San Andreas fault between the Mexican border and San Francisco Bay has been inferred from repeated surveys of trilateration networks in the 1973–1989 interval. The velocity field has the appearance of a shear flow that remains parallel to the local...
Late Devonian history of Michigan basin
R.C. Gutschick, Charles Sandberg
1991, Special Paper of the Geological Society of America (256) 181-202
The Upper Devonian sequence in the Michigan Basin is a westward extension of coeval cyclical facies of the Catskill deltaic complex in the Appalachian basin. Both basins and the intervening Findlay arch express the tectonic and sedimentational effects of foreland compression and isostatic compensation produced by the Acadian orogeny. The...
Upper Devonian biostratigraphy of Michigan Basin
R.C. Gutschick, Charles Sandberg
1991, GSA Special Papers (256) 179
The Late Devonian Michigan Basin was floored by the Middle and Upper Devonian Squaw Bay Limestone, which was deposited during the downwarping that produced the basin within a former Middle Devonian carbonate platform. The Squaw Bay comprises three beds, each having a different conodont fauna. The two upper beds, deposited...
The Loma Prieta earthquake, ground motion, and damage in Oakland, Treasure Island, and San Francisco
Thomas C. Hanks, A. Gerald Brady
1991, Bulletin of the Seismological Society of America (81) 2019-2047
The basis of this study is the acceleration, velocity, and displacement wave-forms of the Loma Prieta earthquake (18 October 1989; M = 7.0) at two rock sites in San Francisco, a rock site on Yerba Buena Island, an artificial-fill site on Treasure Island, and three sites in Oakland underlain by...
Global warming and prairie wetlands: potential consequences for waterfowl habitat
Karen A. Poiani, W. Carter Johnson
1991, BioScience (41) 611-618
The accumulation of greenhouse gasses in the atmosphere is expected to warm the earth's climate at an unprecedented rate (Ramanathan 1988, Schneider 1989). If the climate models are correct, within 100 years the earth will not only be warmer than it has been during the past million years, but...
Crustal subsidence and extension and Medicine Lake volcano, northern California
Daniel Dzurisin, Julie M. Donnelly-Nolan, John R. Evans, Stephen R. Walter
1991, Journal of Geophysical Research B: Solid Earth (96) 16319-16333
The pattern of historical ground deformation, seismicity, and crustal structure near Medicine Lake volcano illustrates a close relation between magmatism and tectonism near the margin of the Cascade volcanic chain and the Basin and Range tectonic province. Between leveling surveys in 1954 and 1989 the summit of Medicine Lake volcano...
Rare earth elements in Japan Sea sediments and diagenetic behavior of Ce/Ce∗: results from ODP Leg 127
R. Murray, Marilyn R. Buchholtz ten Brink, Hans-Juergen Brumsack, David C. Gerlach, G. Price Russ
1991, Geochimica et Cosmochimica Acta (55) 2453-2466
The relative effects of paleoceanographic and paleogeographic variations, sediment lithology, and diagenetic processes on the recorded rare earth element (REE) chemistry of Japan Sea sediments are evaluated by investigating REE total abundances and relative fractionations in 59 samples from Ocean Drilling Program Leg 127. REE total abundances (ΣREE) in the Japan...
Fall and winter distribution of Canada geese in the Mississippi flyway
Michael D. Samuel, Donald H. Rusch, Kenneth F. Abraham, Murray M. Gillespie, J. Paul Prevett, George W. Swenson
1991, Journal of Wildlife Management (55) 449-456
Canada geese (Branta canadensis) from northern Manitoba and northern Ontario were marked with leg bands and neck bands and observed throughout the Mississippi flyway from 1978 to 1989. We used observations of neck-banded geese within each state to determine the relative fall/winter distribution of the Eastern Prairie Population (EPP) and...
Resource constraints in petroleum production potential
C.D. Masters, D. H. Root, E. D. Attanasi
1991, Science (253) 146-152
Geologic reasons indicate that the dominant position of the Middle East as a source of conventional petroleum will not be changed by new discoveries elsewhere. The share of world crude oil production coming from the Middle East could increase, within 10 to 20 years, to exceed 50 percent, under even...
Seismic reflection/refraction mapping of faulting and regional dips in the eastern Alaska Range
Thomas M. Brocher, Warren J. Nokleberg, N.I. Christensen, William J. Lutter, Eric L. Geist, M. A. Fisher
1991, Journal of Geophysical Research B: Solid Earth (96) 10233-10249
We present the results of a Trans‐Alaska Crustal Transect (TACT) investigation of the upper 2–5 km of the eastern Alaska Range in the vicinity of the Denali fault based on seismic reflection/refraction data, laboratory measurements of rock velocities, and structural mapping. The Denali fault is a major dextral slip structure...
Neotectonic effects on sinuosity and channel migration, Belle Fourche River, Western South Dakota
Basil Gomez, Donna C. Marron
1991, Earth Surface Processes and Landforms (16) 227-235
Short-term instability in the behaviour of a small, meandering alluvial channel is identified from the relation between sinuosity and either floodplain slope or channel slope within 17 reaches along an 81-kilometre section of the Belle Fourche River in western South Dakota. In reaches 1 to 4 and 11 to 17...
Basin and range crustal and upper mantle structure, northwest to central Nevada
Rufus D. Catchings, Walter D. Mooney
1991, Journal of Geophysical Research B: Solid Earth (96) 6247-6267
We present an interpretation of the crustal and uppermost mantle structure of the Basin and Range of northwestern Nevada based on seismic refraction/wide‐angle reflection, near‐vertical reflection, and gravity data. In comparison to most previous estimates, we find that the crust is somewhat thicker (32–36 km versus 22–30...
U–Pb geochronology of Late Cretaceous and early Tertiary plutons in the northern Coast Mountains batholith
G.E. Gehrels, W. C. McClelland, S.D. Sampson, Patchett P. Jonathan, David A. Brew
1991, Canadian Journal of Earth Sciences (28) 899-911
U–Pb geochronologic studies demonstrate that steeply dipping, sheetlike tonalitic plutons along the western margin of the northern Coast Mountains batholith were emplaced between ~83 and ~57 (perhaps ~55) Ma. Less elongate tonalitic–granodioritic bodies in central portions of the batholith yield ages of 59–58 Ma, coeval with younger phases of the tonalitic...
Population trends from the American woodcock singing-ground survey, 1970-88
John R. Sauer, James B. Bortner
1991, Journal of Wildlife Management (55) 300-312
Population trend analysis of American woodcook (Scolopax minor) using data from a singing-ground survey indicates population declines throughout the breeding range of the species between 1970 and 1988. In the eastern United States and Canada, this decline has been quite consistent throughout the period, but in the central portion of...
Home range and movements of juvenile Puerto Rican parrots
Gerald D. Lindsey, Wayne J. Arendt, Jan Kalina, Grey W. Pendleton
1991, Journal of Wildlife Management (55) 318-322
We studied home range and movements of 15 radio-marked, juvenile Puerto Rican parrots (Amazona vittata) fledging from wild nests during summer and fall, 1985-87. When juvenile parrots remained in the nest valley, home ranges during 1986 (x̄ = 32 ± 10 [SE] ha, n = 4) were larger (P...
