Vertical transmission of infectious hematopoietic necrosis virus in sockeye salmon (Oncorhynchus nerka): Isolation of virus from dead eggs and fry
D. Mulcahy, R.J. Pascho
1985, Journal of Fish Diseases (8) 393-396
The control of epizootics of infectious haematopoietic necrosis (IHN) virus in salmonid fishes is presently based on examination and certification of adult brood fish to prevent the introduction of virus-infected eggs into hatcheries (Canadian Fisheries and Marine Service 1976; McDaniel 1979). This strategy is based on the assumption that the...
Processes on a glacier-dominated coast, Alaska
Bruce F. Molnia
1985, Zeitschrift fur Geomorphologie, Supplementband (57) 141-153
The 500 km long Gulf of Alaska coastline between Cape Suckling and Cape Spencer can be characterized by constant rapid change in an environment of glaciers, stormy climate, high relief, and extreme oceanographic parameters. During a more than 200-year history of observation, bays have completely filled with sediment, new bays...
Limnology of nine small lakes, Matanuska-Susitna Borough, Alaska, and the survival and growth rates of rainbow trout
P. F. Woods
1985, Water-Resources Investigations Report 85-4292
The survival and growth rates of rainbow trout (Salmo gairdnieri) were concurrently measured with selected limnological characteristics in nine small (surface area < 25 sq hectometers) lakes in the Matanuska-Susitna Borough. The project goal was to develop empirical models for predicting rainbow trout growth rates from the following variables: total...
A reconnaissance of the major Holocene tephra deposits in the upper Cook Inlet region, Alaska
J.R. Riehle
1985, Journal of Volcanology and Geothermal Research (26) 37-74
The upper Cook Inlet region of southcentral Alaska would be significantly impacted by a major tephrafall, owing to a widespread population and heavily travelled transportation corridors. To evaluate the likelihood of such an occurrence, the tephra deposits of the region have been inventoried. Approximately 90 deposits of Holocene age are...
Review of radiometric data from the Yukon crystalline terrane, Alaska and Yukon Territory
Frederic H. Wilson, James G. Smith, Nora B. Shew
1985, Canadian Journal of Earth Sciences (22) 525-537
The results of more than 20 years of geochronological studies in the Yukon Crystalline Terrane in east-central Alaska and the western Yukon Territory suggest at least six igneous and thermal (metamorphic?) events. Plutonism during Mississippian, Early Jurassic, mid-Cretaceous, Late Cretaceous, and early Tertiary times is indicated. Evidence also indicates that...
DATA ACQUISITION AND APPLICATIONS OF SIDE-LOOKING AIRBORNE RADAR IN THE U. S. GEOLOGICAL SURVEY.
John Edwin Jones, Allan N. Kover
1985, Conference Paper, Technical Papers of the American Society of Photogrammetry, Annual Meeting
The Side-Looking Airborne Radar (SLAR) program encompasses a multi-discipline effort involving geologists, hydrologists, engineers, geographers, and cartographers of the U. S. Geological Survey (USGS). Since the program began in 1980, more than 520,000 square miles of aerial coverage of SLAR data in the conterminous United States and Alaska have been...
A heat-flow reconnaissance of southeastern Alaska
J.H. Sass, L.A. Lawver, R. J. Munroe
1985, Canadian Journal of Earth Sciences (22) 416-421
Heat flow was measured at nine sites in crystalline and sedimentary rocks of southeastern Alaska. Seven of the sites, located between 115 and 155 km landward of the Queen Charlotte – Fairweather transform fault, have an average heat flow of 59 ± 6 mW m−2. This value is significantly higher than the mean of 42 mW m−2 in...
Stable-isotope evidence for a magmatic component in fumarole condensates from Augustine Volcano, Cook Inlet, Alaska, U.S.A.
J.A. Viglino, R.S. Harmon, J. Borthwick, N.L. Nehring, R.J. Motyka, L. D. White, D. A. Johnston
1985, Chemical Geology (49) 141-157
D/H and 18O 16O ratios have been determined for fumarole condensates from Augustine Volcano, an active calc-alkaline stratovolcano in Lower Cook Inlet, Alaska. The isotopic data for the condensates form a linear ?? D-?? 18O array from low-temperature fluids (< 100??C) which are essentially local meteoric water (?? D...
Fat deposition and usage by arctic-nesting sandhill cranes during spring
Gary L. Krapu, G.C. Iverson, K. J. Reinecke, C.M. Boise
1985, The Auk (102) 362-368
Body weight, fat, and protein levels of arctic-nesting Sandhill Cranes (Grus canadensis) were measured at several locations during spring migration and on the breeding grounds. Body weights of adult males and females increased by about 34% (1,129 g) and 30% (953 g) from early March at the Platte River to...
Pollen analysis of a late pliocene and early pleistocene section from the Gubik Formation of Arctic Alaska
R.E. Nelson, L. D. Carter
1985, Quaternary Research (24) 295-306
A 14-m-thick section of marine and nonmarine sediments of the Gubik Formation of northern Alaska, exposed in bluffs near Ocean Point on the Colville River, has been studied by means of pollen analysis. Pollen from the marine sediments, of probable late Pliocene age, records a boreal forest of spruce and...
Cemented horizon in subarctic Alaskan sand dunes: Discussion and reply
J. P. Galloway, E. A. Koster, T. D. Hamilton, George W. Cox
1985, American Journal of Science (285) 186-191
No abstract available....
The Emperor Goose
Margaret R. Petersen
Roger L. Di Silvestro, editor(s)
1985, Report, Audubon wildlife report 1985
Many ornithologists believe the emperor goose (Chen canagicus) is the most beautiful goose in North America. Detailed descriptions of its plumage can be found in Palmer1 and a general description in Bellrose.2 Emperor geese are rather short and squatty, with yellow-orange feet and pink bills. Their bluish-gray body feathers are...
The McKinley Sequence of granitic rocks: A key element in the accretionary history of southern Alaska
M. A. Lanphere, B.L. Reed
1985, Journal of Geophysical Research Solid Earth (90) 11413-11430
The McKinley sequence of granitic rocks consists of several discrete plutons in the central Alaska Range. Most of these plutons crop out south of the Denali fault system (DFS) in the Talkeetna quadrangle. Plutons of the McKinley sequence largely intrude deformed upper Meszoic flysch between the DFS and the northern...
Quaternary sedimentation in Shelikof Strait, Alaska
Monty A. Hampton
1985, Marine Geology (62) 213-253
Shelikof Strait, a nearly parallel-sided marine channel between the Kodiak Island group and the Alaska Peninsula, has experienced a succession of distinct sedimentary environments during Quaternary time. Pleistocene glaciers carved a deep basin into bedrock in the southwest part of the strait and a shallower platform surface with incised channels...
ORTHOPHOTOQUAD MAPPING PROGRAM FOR ALASKA.
James R. Plasker
1985, Conference Paper
The U. S. Geological Survey (USGS) is the lead civilian mapping agency in the United States and is responsible for creating and maintaining numerous map series. In Alaska the standard topographic map series is at a scale of 1:63,360, and maps at that scale have been available from the USGS...
Carbonate concretions: an ideal sedimentary host for microfossils
C.D. Blome, N. R. Albert
1985, Geology (13) 212-215
Microfossils extracted from carbonate concretions tend to be better preserved, more abundant and diverse, and more likely to retain delicate and fragile structures than those extracted from the surrounding rocks. Enhanced preservation correlates with early diagenetic concretion formation at or near the sediment-water...
Seismic and geochemical evidence for shallow gas in sediment on Navarin continental margin, Bering Sea
Paul R. Carlson, Margaret Golan-Bac, Herman A. Karl, Keith A. Kvenvolden
1985, American Association of Petroleum Geologists Bulletin (69) 422-436
Marine seismic studies coupled with geochemical investigations demonstrate that hydrocarbon gases are ubiquitous in the near-surface (<= 250 m or 820 ft depth) sediment of the Navarin continental margin in the northern Bering Sea. Three types of acoustic anomalies appear to be related to the presence of gas in the...
Petrology and tectonic significance of augen gneiss from a belt of Mississippian granitoids in the Yukon-Tanana terrane, east- central Alaska
Cynthia Dusel-Bacon, John N. Aleinikoff
1985, Geological Society of America Bulletin (96) 411-425
An approximately E-W-trending belt of porphyritic peraluminous granitic rocks, metamorphosed and deformed to augen gneiss, is exposed for 400 km across the Yukon-Tanana terrain. Chemical, textural, and isotopic data from large augen-gneiss bodies indicate that these bodies originated as early Mississippian granitic rocks that assimilated, or were anatectically derived from,...
Diving depths of four alcids
John F. Piatt, David N. Nettleship
1985, The Auk (102) 293-297
Incidental catches of 12,243 Common Murres (Uria aalge), 875 Atlantic Puffins (Fratercula arctica), 36 Black Guillemots (Cepphus grylle), and 9 Razorbills (Alca torda) were recorded off Newfoundland during the summers of 1980-1982 (26,445 net-days of fishing effort). Most catch occurred in stationary gill nets set on the sea floor at...
Processing of Landsat imagery to map surface mineral alteration on the Alaska Peninsula: A section in USGS research on mineral resources, 1985 program and abstracts
Frederic H. Wilson, James York
1985, Circular 949
Landsat images were digitally processed to facilitate assessment of the mineral resources of the Port Moller, Stepovak Bay, and Simeonof Island 1:250,000 quadrangles. Field mapping and assessment of these quadrangles were begun in 1983 as part of the Alaska Mineral Resource Assessment Program (AMRAP). It was quickly realized that time...
A transect of metamorphic rocks along the Copper River, Cordova and Valdez Quadrangles, Alaska: A section in The United States Geological Survey in Alaska: Accomplishments during 1982
Marti L. Miller, Julie A. Dumoulin, S.W. Nelson
1984, Circular 939
The lower Tertiary Orca Group is juxtaposed against the Upper Cretaceous Valdez Group along the Contact fault system (Winkler and Plafker, 1974, 198; Plafker and others, 1977)(fig. 33). In both groups, turbidites are the dominant rock type, with lesser mafic volcanic rocks (table 10). The Valdez Group, on the north,...
Comparison of in vitro growth characteristics of ten isolates of infectious hematopoietic necrosis virus
D. Mulcahy, R.J. Pascho, C.K. Jenes
1984, Journal of General Virology (65) 2199-2207
Ten isolates of infectious haematopoietic necrosis from salmonid fishes of different locations on the West Coast of North America from California to Alaska were compared by plaque size, single-step growth curves at 15 and 18 °C, rate of appearance of cytopathic effects in cell cultures, and growth over a range...
Wilderness mineral potential: Assessment of mineral-resource potential in U.S. Forest Service lands studied in 1964-1984: Volume 1
S.P. Marsh, S.J. Kropschot, R. G. Dickinson, editor(s)
1984, Professional Paper 1300-1
Under the provisions of the Wilderness Act (Public Law 88-577, September 3, 1964) and subsequent related legislation, the U.S. Geological Survey (USGS) and the U.S. Bureau of Mines (USBM) have been conducting mineral surveys of wilderness and primitive areas, and of other national forest lands being considered for wilderness designation....
Trench-fill submarine-fan facies associations of the Upper Cretaceous Chugach terrane, southern Alaska
T. H. Nilsen
1984, Geo-Marine Letters (3) 179-185
Turbidites of the Upper Cretaceous Chugach terrane of southern Alaska were deposited in a trench during northward-directed subduction. The fault-bounded outcrop belt of the Chugach terrane is about 2000-km long and 100-km wide and was accreted to Alaska during the Cenozoic. Turbidites are at least 5000 m thick, are extensively...
Disseminated visceral coccidiosis in sandhill cranes
J. W. Carpenter, M.N. Novilla, R. Fayer, G.C. Iverson
1984, Journal of the American Veterinary Medical Association (185) 1343-1346
Disseminated visceral coccidiosis (DVC) caused by Eimeria spp was first recognized as a disease entity in captive sandhill cranes (Grus canadensis) and whooping cranes (G americana) at the Patuxent Wildlife Research Center. Because cranes produced at the Center are reintroduced to the wild to augment wild populations, studies involving both...
