Alaska
Douglas V. Prose
1994, Open-File Report 94-179-D
Principal facts for gravity data in the Bethel and Russian Mission 1 degree x 3 degrees quadrangles, Alaska
Robert L. Morin
1994, Open-File Report 94-14-A
Bethel and Russian Mission 1° x 3° quadrangles are located in southwestern Alaska near the mouth of the Kuskokwim River. The Russian Mission quadrangle now has about 266 gravity stations and the Bethel quadrangle has about 485 gravity stations.Riverboat traverses along the Yukon River in the northern part of the...
Principal facts for gravity data in the Bethel and Russian Mission 1 degree x 3 degrees quadrangles, Alaska
Robert L. Morin
1994, Open-File Report 94-14-B
No abstract available....
An inverted metamorphic field gradient in the central Brooks Range, Alaska and implications for exhumation of high-pressure/low-temperature metamorphic rocks
B. Patrick, A.B. Till, W.S. Dinklage
1994, LITHOS (33) 67-83
During exhumation of the Brooks Range internal zone, amphibolite-facies rocks were emplaced atop the blueschist/greenschist facies schist belt. The resultant inverted metamorphic field gradient is mappable as a series of isograds encountered as one traverses up structural section. Amphibolite-facies metamorphism occurred at ??? 110 Ma as determined from 40Ar...
The 1989-1990 eruption of Redoubt Volcano, Alaska: impacts on aircraft operations
T. J. Casadevall
1994, Journal of Volcanology and Geothermal Research (62) 301-316
The December 1989–June 1990 eruption of Redoubt Volcano affected commercial and military air operations in the vicinity of Anchorage, Alaska. These effects were due to the direct impact of volcanic ash on jet aircraft, as well as to the rerouting and cancellations of flight operations owing to eruptive activity. Between...
Pliocene terrace gravels of the ancestral Yukon River near Circle, Alaska: Palynology, paleobotany, paleoenvironmental reconstruction and regional correlation
T. A. Ager, J.V. Matthews Jr., W. Yeend
1994, Quaternary International (22-23) 185-206
Gravels deposited by the ancestral Yukon River are preserved in terrace remnants on the margins of the Yukon River valley near the village of Circle in east-central Alaska. Plant fossils recovered from sandy silt lenses within these gravels include cones and needles of Picea and Larix and a variety of...
Proximal pyroclastic deposits from the 1989-1990 eruption of Redoubt Volcano, Alaska - stratigraphy, distribution, and physical characteristics
C. A. Gardner, C.A. Neal, R. B. Waitt, R. J. Janda
1994, Journal of Volcanology and Geothermal Research (62) 213-250
More than 20 eruptive events during the 1989-1990 eruption of Redoubt Volcano emplaced a complex sequence of lithic pyroclastic-flow, -surge, -fall, ice-diamict, and lahar deposits mainly on the north side of the volcano. The deposits record the changing eruption dynamics from initial gas-rich vent-clearing explosions to episodic gas-poor lava-dome extrusions...
Contrasts in Arctic shelf sea-ice regimes and some implications: Beaufort Sea versus Laptev Sea
E. Reimnitz, D. Dethleff, D. Nurnberg
1994, Marine Geology (119) 215-225
The winter ice-regime of the <80 km wide Alaskan Beaufort Sea shelf is characterized by compression and shearing, resulting in the formation of major grounded pressure ridge systems stabilizing the fast ice on the mid-shelf, and essentially no open-water areas. In contrast,...
Oblique maps of southeastern Alaska, showing major mineral localities
T. R. Alpha, A. B. Ford
1994, Miscellaneous Field Studies Map 2271
Water Resources Data, Alaska, Water Year 1993
K.R. Linn, R.T. Kemnitz, B. J. Bailey, R. L. Rickman, W.C. Swanner
1994, Water Data Report AK-93-1
Miocene and Pliocene lacustrine and fluvial sequences, Upper Ramparts and Canyon village, Porcupine river, east-central Alaska
T. D. Fouch, L. D. Carter, Michael J. Kunk, C.A.S. Smith, J. M. White
1994, Quaternary International (22-23) 11-29
Cenozoic strata exposed along the Porcupine River between the Upper Ramparts and Canyon Village, Alaska, can be divided into five unconformity-bounded units (sequences) which are: lower and middle Miocene unit A, the white sandy fluvial sequence with peat beds; middle Miocene unit B, the basalt sequence-part B1 is basalt, and...
Eruptive history and petrology of Mount Drum volcano, Wrangell Mountains, Alaska
D.H. Richter, E. J. Moll-Stalcup, T. P. Miller, M. A. Lanphere, G. B. Dalrymple, R. L. Smith
1994, Bulletin of Volcanology (56) 29-46
Mount Drum is one of the youngest volcanoes in the subduction-related Wrangell volcanic field (80x200 km) of southcentral Alaska. It lies at the northwest end of a series of large, andesite-dominated shield volcanoes that show a northwesterly progression of age from 26 Ma near the Alaska-Yukon border to about 0.2...
Artifacts resembling budding bacteria produced in placer-gold amalgams by nitric acid leaching
J.R. Watterson
1994, Geology (22) 1131-1134
Microscopic filiform morphologies in gold which are indistinguishable from forms originally interpreted as bacterial in origin were produced in the laboratory by treating amalgams made from natural and artificial gold with hot nitric acid. Textures ranging from cobblestone to deeply crenulated to nodular...
Sample locality map and analytical data for potassium-argon ages in the Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska Peninsula
Frederic H. Wilson, Nora B. Shew, Gregory D. DuBois, Scott W. Bie
1994, Miscellaneous Field Studies Map 2155-E
Potassium-argon age determinations for 84 volcanic, intrusive, and hydrothermally altered rocks from the Port Moller, Stepovak Bay, and Simeonof Island quadrangles are reported here. Of these age determinations, 78 samples were analyzed as part of Alaska Mineral Resource Assessment Program (AMRAP) studies in the Port Moller, Stepovak Bay, and Simeonof...
Palynology, paleoclimatology and correlation of middle Miocene beds from Porcupine River (locality 90-1), Alaska
J. M. White, T. A. Ager
1994, Quaternary International (22-23) 43-77
Beds in the Upper Ramparts Canyon of the Porcupine River, Alaska (67?? 20' N, 141?? 20' W), yielded a flora rich in pollen of hardwood genera now found in the temperate climates of North America and Asia. The beds are overlain or enclosed by two basalt flows which were dated...
Geochemical changes in crude oil spilled from the Exxon Valdez supertanker into Prince William Sound, Alaska
Frances D. Hostettler, Keith A. Kvenvolden
1994, Organic Geochemistry (21) 927-936
North Slope crude oil spilled from the T/V Exxon Valdez in March 1989 and contaminated about 500 km of Prince William Sound shoreline. Aliphatic and aromatic hydrocarbons in oil samples collected in August 1990 and June 1992 from beaches on six islands impacted by the spill have been compared with the hydrocarbons...
A genetic comparison of French alpine ibex populations (Capra ibex ibex) and implications for their management
M. Stuwe, Kim T. Scribner, D. Gauthier
1994, Travaux scientifiques du Parc National de la Vanoise (18) 71-76
No abstract available....
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...
An intersection model for estimating sea otter mortality along the Kenai Peninsula
James L. Bodkin, Mark S. Udevitz
Thomas R. Loughlin, editor(s)
1994, Book chapter, Marine mammals and the <i>Exxon Valdez</i>
We developed an intersection model to integrate parameters estimated from three distinct data sets that resulted from the Exxon Valdez oil spill: (1) the distribution, amount, and movements of spilled oil; (2) the distribution and abundance of sea otters along the Kenai Peninsula; and (3) the estimates of site-specific sea otter mortality...
Geology of northern Alaska
Thomas E. Moore, Wes K. Wallace, Kenneth J. Bird, Susan M. Karl, Charles G. Mull, John T. Dillon
George Plafker, Henry C. Berg, editor(s)
1994, Book chapter, The geology of Alaska
No abstract available....
Pathology of sea otters
T.P. Lipscomb, Richard K. Harris, A.H. Rebar, Brenda E. Ballachey, Romona J. Haebler
Thomas R. Loughlin, editor(s)
1994, Book chapter, Marine mammals and the <i>Exxon Valdez</i>
In the months following the Exxon Valdez oil spill (EVOS), 994 sea otters (Enhydra lutris) from oil-spill-affected areas died (Doroff et al. 1993). Carcasses collected from these areas and otters that died in rehabilitation centers are included in this number. The actual number that died was probably much greater.Within days...
An overview of sea otter studies
Brenda E. Ballachey, James L. Bodkin, Anthony R. DeGange
Thomas R. Loughlin, editor(s)
1994, Book chapter, Marine mammals and the <i>Exxon Valdez</i>
The Exxron Valdez oil spill (EVOS) on 24 March 1989 threatened extensive areas of prime sea otter (Enhydra lutris) habitat along the coasts of south-central Alaska. The spill occurred in northeastern Prince William Sound (PWS), and oil moved rapidly south and west through PWS into the Gulf of Alaska. Much...
Sea otter foraging behavior and hydrocarbon levels in prey
Angela M. Doroff, James L. Bodkin
Thomas R. Loughlin, editor(s)
1994, Book chapter, Marine mammals and the <i>Exxon Valdez</i>
Following the Exxon Valdez oil spill (EVOS), Prudhoe Bay crude oil from the vessel spread on the sea surface and covered coastal shores from western Prince William Sound (PWS) to the Alaska Peninsula. In PWS alone. acute mortality of sca otters at the time of the spill was estimated to...
Management of Pacific brant: Population structure and conservation issues
James S. Sedinger, David H. Ward, R. Michael Anthony, Dirk V. Derksen, Calvin J. Lensink, Karen S. Bollinger, Neil K. Dawe
Richard E. McCabe, Kelly G. Wadsworth, editor(s)
1994, Conference Paper, Transactions of the fifty-ninth North American wildlife and natural resources conference
Pacific brant (Branta bernicla) nest from the Yukon-Kuskokwim (Y-) Delta in southwestern Alaska along the coast of North America to the central Canadian arctic (Pacific Flyway Subcommittee on Pacific Brant 1992) (Figure 1). Birds from this population also nest in the Canadian arctic islands south of Prince Patrick Island and...
Genetic links among fluid cycling, vein formation, regional deformation, and plutonism in the Juneau gold belt, southeastern Alaska
Lance D. Miller, Richard J. Goldfarb, George E. Gehrels, Lawrence W. Snee
1994, Geology (22) 203-206
Gold-bearing quartz vein systems in the Juneau gold belt formed within a 160-km- long by 5- to 8-km-wide zone along the western margin of the Coast Mountains, Alaska. Vein systems are spatially associated with shear zones adjacent to terrane-bounding, mid-Cretaceous thrust faults. Analysis of vein orientations and sense of shear...