Permian Tethyan Fusulinina from the Kenai Peninsula, Alaska
C.H. Stevens, V.I. Davydov, D. Bradley
1997, Journal of Paleontology (71) 985-994
Two samples from a large, allochthonous limestone block in the McHugh Complex of the Chugach terrane on the Kenai Peninsula, Alaska, contain species of 12 genera of Permian Fusulinina including Abadehella, Kahlerina, Pseudokahlerina?, Nankinella, Codonofusiella, Dunbarula, Parafusulina?, Chusenella, Verbeekina, Pseudodoliolina, Metadoliolina?, Sumatrina?, and Yabeina, as well as several...
Late Mesozoic and Cenozoic thermotectonic evolution of the central Brooks Range and adjacent North Slope foreland basin, Alaska: Including fission track results from the Trans-Alaska Crustal Transect (TACT)
P. B. O’Sullivan, J.M. Murphy, A.E. Blythe
1997, Journal of Geophysical Research B: Solid Earth (102) 20821-20845
Apatite fission track data are used to evaluate the thermal and tectonic history of the central Brooks Range and the North Slope foreland basin in northern Alaska along the northern leg of the Trans-Alaska Crustal Transect (TACT). Fission track analyses of the detrital apatite grains in most sedimentary units resolve...
Stratigraphic and structural implications of conodont and detrital zircon U-Pb ages from metamorphic rocks of the Coldfoot terrane, Brooks Range, Alaska
Thomas E. Moore, J. N. Aleinikoff, A. G. Harris
1997, Journal of Geophysical Research B: Solid Earth (102) 20797-20820
New paleontologic and isotopic data from the Emma Creek and Marion Creek schists of the Coldfoot terrane, Arctic Alaska superterrane, central Brooks Range, suggest Devonian and possibly younger ages of deposition for their sedimentary protoliths. Conodonts from marble of the Emma Creek schist, intruded by a roughly 392 Ma orthogneiss,...
Permian deposition in the north central Brooks Range, Alaska: Constraints for tectonic reconstructions
K.E. Adams, C. G. Mull, R.K. Crowder
1997, Journal of Geophysical Research B: Solid Earth (102) 20727-20748
Two opposing tectonic models have been offered to explain the regional structural relations in the north central Brooks Range fold-thrust belt of northern Alaska. The first suggests that rocks of the northern Endicott Mountains were thrust from south to north over the area of the present Mount Doonerak high and...
An integrated model for the tectonic development of the frontal Brooks Range and Colville Basin 250 km west of the Trans-Alaska Crustal Transect
F. Cole, K. J. Bird, J. Toro, F. Roure, P. B. O’Sullivan, M. Pawlewicz, D. G. Howell
1997, Journal of Geophysical Research B: Solid Earth (102) 20685-20708
We present a kinematic model for the sequence of deformation and sedimentation in the frontal Brooks Range and adjacent Colville Basin in the Etivluk River region, 250 km west of the Trans-Alaska Crustal Transect (TACT). The model is based on a tectonic subsidence analysis of the foreland basin, combined with...
A numerical investigation of choked flow dynamics and its application to the triggering mechanism of long-period events at Redoubt Volcano, Alaska
M.M. Morrissey, B. A. Chouet
1997, Journal of Geophysical Research B: Solid Earth (102) 7965-7983
We use numerical simulations of transonic flow through a crack to study the dynamics of the formation of shock waves downstream from a nozzle-like constriction inside the crack. The model solves the full set of Navier-Stokes equations in two dimensions via an explicit multifield finite difference representation. The crack walls...
Late quaternary regional geoarchaeology of Southeast Alaska Karst: A progress report
E. J. Dixon, T. H. Heaton, T. E. Fifield, Thomas D. Hamilton, D. E. Putnam, F. Grady
1997, Geoarchaeology - An International Journal (12) 689-712
Karst systems, sea caves, and rock shelters within the coastal temperate rain forest of Alaska's Alexander Archipelago preserve important records of regional archaeology, sea level history, glacial and climatic history, and vertebrate paleontology. Two 14C AMS dates on human bone discovered in a remote cave (49-PET-408) on Prince of Wales...
A watershed approach to ecosystem monitoring in Denali National Park and preserve, Alaska
L.K. Thorsteinson, D.L. Taylor
1997, Journal of the American Water Resources Association (33) 795-810
The National Park Service and the National Biological Service initiated research in Denali National Park and Preserve, a 2.4 million-hectare park in southcentral Alaska, to develop ecological monitoring protocols for national parks in the Arctic/Subarctic biogeographic area. We are focusing pilot studies on design questions, on scaling issues and regionalization,...
Hydrocarbons in hair, livers, and intestines of sea otters (Enhydra lutris) found dead along the path of the Exxon Valdez oil spill
Brenda E. Ballachey, Kimberly A. Kloecker
1997, Report MMS 6-3
No abstract available....
Hydrocarbon residues in tissues of sea otters (Enhydra lutris) collected following the Exxon Valdez Oil Spill
Brenda E. Ballachey, Kimberly A. Kloecker
1997, Report MMS 6-16
No abstract available....
Hydrocarbon residues in tissues of sea otters (Enhydra lutris) collected from southeast Alaska
Brenda E. Ballachey, Kimberly A. Kloecker
1997, Report MMS 6-2
No abstract available....
Food of Flesh-footed shearwaters Puffinus carneipes associated with high-seas driftnets in the central North Pacific Ocean
Patrick J. Gould, Peggy H. Ostrom, William Walker
1997, Emu (97) 168-173
We examined digestive tract contents and stable nitrogen isotope ratios in breast muscles of Flesh-footed Shearwaters Puffinus carneipes associated with high-seas driftnet fisheries in the central North Pacific Ocean. Small fish, Lanternfish (Myctophidae) and Pacific Saury Cololabis saira, were the principal prey found in the digestive tracts. Pieces of unidentified...
Discrimination among populations of sockeye salmon fry with Fourier analysis of otolith banding patterns formed during incubation
James E. Finn, Carl V. Burger, Leslie E. Holland-Bartels
1997, Transactions of the American Fisheries Society (126) 559-578
We used otolith banding patterns formed during incubation to discriminate among hatchery- and wild-incubated fry of sockeye salmon Oncorhynchus nerka from Tustumena Lake, Alaska. Fourier analysis of otolith luminance profiles was used to describe banding patterns: the amplitudes of individual Fourier harmonics were discriminant variables. Correct classification of otoliths to...
Demersal fish assemblages of the northeastern Chukchi Sea, Alaska
W.E. Barber, R. L. Smith, M. Vallarino, R.M. Meyer
1997, Fishery Bulletin (95) 195-209
We documented the distribution and abundance of demersal fishes in the northeastern Chukchi Sea, Alaska, in 1990 and 1991, and described 1990 demersal fish assemblages and their relationship to general oceanographic features in the area. We collected samples using an otter trawl at 48 stations in 1990 and 16 in...
Complexities of plinian fall deposition at vent: An example from the 1912 Novarupta eruption (Alaska)
J. Fierstein, Bruce F. Houghton, C. J. N. Wilson, W. Hildreth
1997, Journal of Volcanology and Geothermal Research (76) 215-227
An extremely proximal ejecta ring, with exposures to within 100 m of vent, was deposited during later-stage plinian fall activity during the 1912 Novarupta eruption in Alaska. One bed in the ejecta ring (bed S) contains predominantly andesitic clasts which serve to delineate the striking contrast in thinning rates along...
Persistence rates and detection probabilities of oiled king eider carcasses on St Paul Island, Alaska
A. C. Fowler, Paul L. Flint
1997, Marine Pollution Bulletin (34) 522-526
Following an oil spill off St Paul Island, Alaska in February 1996, persistence rates and detection probabilities of oiled king eider (Somateria spectabilis) carcasses were estimated using the Cormack-Jolly-Seber model. Carcass persistence rates varied by day, beach type and sex, while detection probabilities varied by day and beach type. Scavenging,...
The relative importance of nesting and foraging sites in selection of breeding territories by Townsend's Warblers
Steven M. Matsuoka, Colleen M. Handel, Daniel D. Roby, D.L. Thomas
1997, The Auk (114) 657-667
We investigated habitat selection by the Townsend's Warbler (Dendroica townsendi), a Netropical-Nearctic migrant that breeds primarily in mature coniferous forests. From 1993 to 1994, we compared the features of habitat selected for nest sites and foraging sites with those selected for territories in mature, mixed coniferous-deciduous forests in south-central Alaska....
Evaluation of conditions along the grounding line of temperate marine glaciers: An example from Muir Inlet, Glacier Bay, Alaska
K.C. Seramur, R.D. Powell, P.R. Carlson
1997, Marine Geology (140) 307-327
In the marine environment, stability of the glacier terminus and the location of subglacial streams are the dominant controls on the distribution of grounding-line deposits within morainal banks. A morainal bank complex in Muir Inlet, Glacier Bay, SE Alaska, is used to develop a model of terminus stability and location...
Lithofacies and seismic-reflection interpretation of temperate glacimarine sedimentation in Tarr Inlet, Glacier Bay, Alaska
J. Cai, R.D. Powell, E. A. Cowan, P.R. Carlson
1997, Marine Geology (143) 5-37
High-resolution seismic-reflection profiles of sediment fill within Tart Inlet of Glacier Bay, Alaska, show seismic facies changes with increasing distance from the glacial termini. Five types of seismic facies are recognized from analysis of Huntec and minisparker records, and seven lithofacies are determined from detailed sedimentologic study of gravity-, vibro-...
Distribution of autumn-staging Lesser Snow Geese on the northeast coastal plain of Alaska
Donna G. Robertson, Alan W. Brackney, Michael A. Spindler, Jerry W. Hupp
1997, Journal of Field Ornithology (68) 124-134
We conducted aerial surveys of Lesser Snow Geese (Chen caerulescens caerulescens) during autumn staging on the coastal plain of the Arctic National Wildlife Refuge (ANWR) in northeast Alaska from late August through September, 1982 - 1993. We evaluated numbers and distribution of Snow Geese that staged on the ANWR, compared...
The California current of the last glacial maximum: reconstruction at 42°N based on multiple proxies
Joseph D. Ortiz, Alan C. Mix, Steven W. Hostetler, Michaele Kashgarian
1997, Paleoceanography (12) 191-205
Multiple paleoceanographic proxies in a zonal transect across the California Current near 42°N record modern and last glacial maximum (LGM) thermal and nutrient gradients. The offshore thermal gradient, derived from foraminiferal species assemblages and oxygen isotope data, was similar at the LGM to that at present (warmer offshore), but average...
Hematological and plasma biochemical reference ranges of Alaskan seabirds: Their ecological significance and clinical importance
S. H. Newman, John F. Piatt, J. White
1997, Colonial Waterbirds (20) 492-504
Blood was analyzed from 151 pelagic marine birds to establish reference ranges for hematological and plasma biochemical parameters from healthy, wild populations of Pacific seabirds. Of the 13 species examined, 9 were from the Family Alcidae (N = 122 individuals) and the remainder (N = 29) from the Families Phalacrocoracidae,...
Deep seismic structure and tectonics of northern Alaska: Crustal-scale duplexing with deformation extending into the upper mantle
G. S. Fuis, J.M. Murphy, W. J. Lutter, Thomas E. Moore, K. J. Bird, N.I. Christensen
1997, Journal of Geophysical Research B: Solid Earth (102) 20873-20896
Seismic reflection and refraction and laboratory velocity data collected along a transect of northern Alaska (including the east edge of the Koyukuk basin, the Brooks Range, and the North Slope) yield a composite picture of the crustal and upper mantle structure of this Mesozoic and Cenozoic compressional orogen. The following...
Migration behavior of tundra swans from the Yukon-Kuskokwim Delta, Alaska
Craig R. Ely, David C. Douglas, A. C. Fowler, Colleen A. Babcock, D.V. Derksen, John Y. Takekawa
1997, The Wilson Bulletin (109) 679-692
Opening the arctic: The drilling of Umiat #1
L. C. Gerhard
1997, Northeastern Geology and Environmental Sciences (19) 8-13
One of the greatest excitements for a petroleum geologist is to venture into the frontier, to explore and drill "where no man has gone before." Over 50 years ago Bill Rex, a Kansas oilman, was tapped to lead the first oil drilling expedition into the Alaskan Arctic. He successfully assembled...
