Geodetic measurements used to estimate ice transfer during Bering Glacier surge
Jeanne Sauber, George Plafker, John Gipson
1995, Eos Science News (76) 289-290
The application of geodetic measurements to glacial research has found a new testing ground: near a surging Alaskan glacier. A set of geodetic measurements collected adjacent to the Bagley Icefield (Figure 1) and along the Gulf of Alaska (Figure 2) are being used to estimate the effects of the Bering...
10 years of volcanic activity in Alaska; 1983 to 1992; a video
Michael P. Doukas, Robert G. McGimsey, Joseph M. Dorava
1995, Open-File Report 95-61-A
Surficial geologic map of northern Adak Island, Alaska
C. F. Waythomas
1995, Open-File Report 95-128
Surficial deposits on northern Adak Island, Alaska include a variety of volcanic, glacial, eolian, and beach sediments. These deposits are the primary water-bearing units on the island and their distri- bution is shown on the accompanying surficial geologic map. An extensive sequence of volcanic debris-flow deposits (lahars) was identified...
Occurrence of the gasoline additive MTBE in shallow ground water in urban and agricultural areas
Paul J. Squillace, Daryll A. Pope, Curtis V. Price
1995, Fact Sheet 114-95
Methyl tert-butyl ether (MTBE) is a volatile organic compound (VOC) derived from natural gas that is added to gasoline either seasonally or year round in many parts of the United States to increase the octane level and to reduce carbon monoxide and ozone levels in the air. In 1993, production...
10 years of volcanic activity in Alaska; 1983 to 1992; a video
Michael P. Doukas, Robert G. McGimsey, Joseph M. Dorava
1995, Open-File Report 95-61-B
Observations of the surge-type Black Rapids Glacier, Alaska, during a quiescent period, 1970-92
Thomas A. Heinrichs, L.R. Mayo, D.C. Trabant, R.S. March
1995, Open-File Report 94-512
This report presents 23 years (1970 to 1992) of observations of Black Rapids Glacier, Alaska. Black Rapids Glacier is a surge-type glacier which most recently surged in 1936-37, and is currently in its quiescent phase. This glacier is of special interest because it is a potential hazard to the trans-Alaska...
Geology, geochemistry, and uranium favorability of Tertiary rocks in south-central Alaska
Kendell A. Dickinson, John A. Campbell, William Frederick Dula Jr.
1995, Bulletin 2098
No abstract available....
Geologic map of Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska Peninsula, Alaska
Frederic H. Wilson, Robert L. Detterman, John W. Miller, James E. Case
1995, IMAP 2272
Geologic mapping of Port Moller, Stevopak Bay, and Simeonof Island 1° by 2° quadrangles on the Alaska Peninsula was conducted as part of the Alaska Mineral Resource Assessment Program (AMRAP). Geologic observations was obtained by using helicopter overflights, vertical aerial photography, and enhanced and extensively processed Landsat imagery (York and...
Contaminants and sea ducks in Alaska and the circumpolar region
Charles Henny, Deborah D. Rudis, Thomas J. Roffe, Everett Robinson-Wilson
1995, Environmental Health Perspectives (103) 41-49
We review nesting sea duck population declines in Alaska during recent decades and explore the possibility that contaminants may be implicated. Aerial surveys of the surf scoter (Melanitta perspicillata), white-winged scoter (M. fusca), black scoter (M. nigra), oldsqaw (Clangula hyemalis), spectacled eider (Somateria fischeri), and Steller's eider (Polysticta stellei) show...
Bald eagles kleptoparasitizing sea otters at Amchitka Island, Alaska
Jon Watt, Bernhard Krausse, M. Tim Tinker
1995, Condor (97) 588-590
No abstract available....
Low-grade, M1 metamorphism of the Douglas Island Volcanics, western metamorphic belt near Juneau, Alaska
Glen R. Himmelberg, David A. Brew, Arthur B. Ford
1995, GSA Special Papers (51) 51-66
The western metamorphic belt is part of the Coast plutonic-metamorphic complex of western Canada and southeastern Alaska that developed during collision of the Alexander terrane and Gravina assemblage on the west against the Yukon Prong and Stikine terranes to the east. Deformation, metamorphism, and plutonism range from about 120 to...
Seismic refraction measurements within the Peninsular terrane, south central Alaska
Elizabeth L. Ambos, Walter D. Mooney, Gary S. Fuis
1995, Journal of Geophysical Research (100) 4079-4095
We present an interpretation of crustal seismic refraction data from the Peninsular terrane, one of the many exotic terranes that have been accreted to the continental margin of southern Alaska in the past 200 m.y. A seismic refraction line was collected along the Glenn Highway in the...
Mineralogical maps showing the distribution of ore-related minerals in the minus-30-mesh, nonmagnetic heavy-mineral fraction of stream sediment, Healy Quadrangle, Alaska
Richard B. Tripp, Harley D. King, Thomas D. Light
1995, Miscellaneous Field Studies Map 2058-D
A reconnaissance mineralogical and geochemical survey of stream sediments in the Healy quadrangle was conducted during 1980-1982 as part of the Alaskan Mineral Resource Assessment Program (AMRAP) of the United States Geological Survey (USGS). As a result of the various AMRAP investigations, a mineral resource evaluation of the quadrangle was...
Guide to the volcanoes of the western Wrangell Mountains, Alaska; Wrangell-St. Elias National Park and Preserve
Donald H. Richter, Danny S. Rosenkrans, Margaret J. Steigerwald
1995, Bulletin 2072
No abstract available....
The Alaska Mineral Resource Assessment Program: Background information to accompany geologic and mineral-resource maps of the Killik River 1°x3° quadrangle, northern Alaska
Karen D. Kelley, Charles G. Mull
1995, Circular 1117
This report summarizes results of integrated geological, geochemical, and geophysical field and laboratory studies conducted by the U.S. Geological Survey in the Killik River 1°x3° quadrangle, Brooks Range, northern Alaska. These studies were designed to provide an assessment of the mineral resources of the quadrangle. The geological and geochemical data...
Ubiquitous tar balls with a California-source signature on the shorelines of Prince William Sound, Alaska
Keith A. Kvenvolden, Frances D. Hostettler, P.R. Carlson, John B. Rapp, C. N. Threlkeld, Augusta Warden
1995, Environmental Science & Technology (29) 2684-2694
Although the shorelines of Prince William Sound still bear traces of the 1989 Exxon Valdez oil spill, most of the flattened tar balls that can be found today on these shorelines are not residues of Exxon Valdez oil. Instead, the carbon-isotopic and hydrocarbonbiomarker signatures of 61 tar ball samples, collected...
Geochemical survey of the Valdez 1° x 3° quadrangle, south-central Alaska
R.J. Goldfarb, J. Carter Borden, Gary R. Winkler
1995, Bulletin 2084
No abstract available....
Late Pleistocene and Holocene paleoenvironments of the North Pacific coast
D.H. Mann, T. D. Hamilton
1995, Quaternary Science Reviews (14) 449-471
Unlike the North Atlantic, the North Pacific Ocean probably remained free of sea ice during the last glacial maximum (LGM), 22,000 to 17,000 BP. Following a eustatic low in sea level of ca. −120 m at 19,000 BP, a marine transgression had flooded the Bering and Chukchi shelves by 10,000...
Metamorphic and structural history of continental crust at a Mesozoic collisional margin, the Ruby terrane, central Alaska
S. M. Roeske, Cynthia Dusel-Bacon, John N. Aleinikoff, L.W. Snee, Marvin A. Lanphere
1995, Journal of Metamorphic Geology (13) 25-40
The Ruby terrane is an elongate fragment of continental crustal rocks that is structurally overlain by thrust slices of oceanic crust. Our results from the Kokrines Hills, in the south‐central part of the Ruby terrane, demonstrate that the low‐angle schistose fabric formed under high‐P/low‐T conditions, at peak conditions of 10.8‐13.2 kbar...
Response of northern pintail breeding populations to drought, 1961-1992
Jay B. Hestbeck
1995, Journal of Wildlife Management (59) 9-15
According to data from the 1960s, northern pintails (Anas acuta) fly north of the Alberta and Saskatchewan prairies during drought resulting in decreasing pintail annual production. Reanalysis of overflight and reduced-production hypotheses using data from 1961-92 indicated that, although the same basic relationships were present, these relationships changed over time....
Geochemical evaluation of coal from the Tertiary Usibelli Group, Usibelli mine, Alaska, one of the lowest sulfur coals mined in the United States
Ronald H. Affolter, Gary D. Stricker, Richard G. Stanley
1995, Conference Paper, Proceedings, Focus on Alaska Coal 1993: Mineral Industry Research Laboratory Report 94
The Nenana coal basin extends 240 km in length and 1.5-50 krn in width along the northern foothills of the Alaska Range in central Alaska. Located at the western end of the Nenana basin is the Usibelli Coal Mine, approximately 120 km southwest of Fairbanks. The Tertiary Usibelli Group consists...
Decline of northern pintails
Jay B. Hestback
Edward T. LaRoe, Gaye S. Farris, Catherine E. Puckett, Peter D. Doran, Michael J. Mac, editor(s)
1995, Book chapter, Our living resources: A report to the nation on the distribution, abundance, and health of U.S. plants, animals, and ecosystems
The size of the continental breeding population of northern pintail (Anas acuta) has greatly varied since 1955, with numbers in surveyed areas ranging from a high of 9.9 million to a low of 1.8 million in 1991. This variation results primarily from differences in the numbers of breeding pintails in...
Subduction cycles under western North America during the Mesozoic and Cenozoic eras
Peter L. Ward
David M. Miller, Cathy Busby, editor(s)
1995, Book chapter, Jurassic magmatism and tectonics of the North American cordillera
An extensive review of geologic and tectonic features of western North America suggests that the interaction of oceanic plates with the continent follows a broad cyclical pattern. In a typical cycle, periods of rapid subduction (7–15 cm/yr), andesitic volcanism, and trench-normal contraction are followed by a shift to trench-normal extension,...
Seabirds in Alaska
Scott A. Hatch, John F. Piatt
Edward T. LaRoe, Gaye S. Farris, Catherine E. Puckett, Peter D. Doran, Michael J. Mac, editor(s)
1995, Book chapter, Our living resources: A report to the nation on the distribution, abundance, and health of U.S. plants, animals, and ecosystems
About 100 million seabirds reside in marine waters of Alaska during some part of the year. Perhaps half this population is composed of 50 species of nonbreeding residents, visitors, and breeding species that use marine habitats only seasonally (Gould et al. 1982). Another 30 species include 40-60 million individuals that...
North American ducks
David F. Caithamer, Graham W. Smith
Edward T. LaRoe, Gaye S. Farris, Catherine E. Puckett, Peter D. Doran, Michael J. Mac, editor(s)
1995, Book chapter, Our living resources: A report to the nation on the distribution, abundance, and health of U.S. plants, animals, and ecosystems
Increased predation and habitat degradation and destruction coupled with drought, especially on breeding grounds, have caused the declines of some duck populations. More than 30 species of fucks breed in North America, in areas as diverse as the Arctic tundra and the subtropics of Florida and Mexico. For many of...
