Publications
USGS research activities relevant to Alaska have yielded more than 9400 historical publications. This page features some of the most recent newsworthy research findings.
Filter Total Items: 3104
Lower Paleozoic carbonate rocks of the Baird Mountains quadrangle, western Brooks Range, Alaska Lower Paleozoic carbonate rocks of the Baird Mountains quadrangle, western Brooks Range, Alaska
Lower Paleozoic carbonate rocks in the Baird Mountains quadrangle form a relatively thin, chiefly shallow-water succession that has been thrust-faulted and metamorphosed to blueschist and greenschist facies. Although this succession was thought to be mostly Devonian until recently, a large part of it is in fact pre-Silurian in age. Middle and Upper Cambrian rocks - the first confirmed in...
Authors
Julie A. Dumoulin, Anita G. Harris
Incidental catch of marine birds and mammals in fishing nets off Newfoundland, Canada Incidental catch of marine birds and mammals in fishing nets off Newfoundland, Canada
Summer surveys of the incidental catch of marine birds and mammals in fishing nets around the east coast of Newfoundland indicated that over 100 000 animals were killed in nets during a 4-year period (1981–1984). Composition of catches depended on foraging behaviour, regional abundance, and the degree of foraging aggregation of different species. Highest incidental catches occurred in...
Authors
John F. Piatt, David N. Nettleship
The Alaska Mineral Resource Assessment Program: Background information to accompany folio of geologic and mineral resource maps of the Circle quadrangle, Alaska The Alaska Mineral Resource Assessment Program: Background information to accompany folio of geologic and mineral resource maps of the Circle quadrangle, Alaska
The geology, geochemistry, geophysics, and Landsat imagery of the Circle quadrangle were investigated by an interdisciplinary research team for the purpose of assessing the mineral potential of the area. The quadrangle covers approximately 15,765 km2 in east-central Alaska; most of it is included in the mountainous Yukon-Tanana Upland physiographic division, but the northernmost part is...
Authors
Helen Laura Foster, W. D. Menzie, J. W. Cady, S. L. Simpson, J. N. Aleinikoff, Frederic H. Wilson, R. B. Tripp
Geologic studies in Alaska by the U.S. Geological Survey during 1985 Geologic studies in Alaska by the U.S. Geological Survey during 1985
This circular contains short reports about many of the geologic studies carried out in Alaska by the U.S. Geological Survey and cooperating agencies in 1985. The topics cover a wide range in scientific and economic interest. Separate bibliographic listings of published reports are included. These listings are: (1) data releases and folio components derived from the Alaska Mineral...
Sequential tests for infectious hematopoietic necrosis virus in individuals and populations of sockeye salmon Sequential tests for infectious hematopoietic necrosis virus in individuals and populations of sockeye salmon
The incidence and titer distribution of infectious hematopoietic necrosis virus in cavity fluid from spent female sockeye salmon (Oncorhynchus nerka) varied little when fish from a naturally spawning population were sampled three times on alternate days. However, when prespawning female sockeye salmon from a second population were individually tagged, penned, and sampled daily, the...
Authors
Daniel M. Mulcahy, Ron Pascho
Map and tables showing potassium-argon age determinations and selected major-element chemical analyses from the Circle quadrangle, Alaska Map and tables showing potassium-argon age determinations and selected major-element chemical analyses from the Circle quadrangle, Alaska
No abstract available.
Authors
Gregory D. DuBois, Frederic H. Wilson, Nora B. Shew
Scale-dependent correlation of seabirds with schooling fish in a coastal ecosystem Scale-dependent correlation of seabirds with schooling fish in a coastal ecosystem
The distribution of piscivorous seabirds relative to schooling fish was investigated by repeated censusing of 2 intersecting transects in the Avalon Channel, which carries the Labrador Current southward along the east coast of Newfoundland. Murres (primarily common murres Uria aalge), Atlantic puffins Fratercula arctica, and schooling fish (primarily capelin Mallotus villosus) were...
Authors
Davod C. Schneider, John F. Piatt
A sublittoral population of Pleurophycus gardneri Setchell and Saunders 1900 (Phaeophyceae: Laminariaceae) in central California A sublittoral population of Pleurophycus gardneri Setchell and Saunders 1900 (Phaeophyceae: Laminariaceae) in central California
Published distributional records for the stipitate kelp Pleurophycus gardneri Setchell and Saunders 1900 (Phaeophyceae: Laminariaceae) indicae a geographic range from Montague Island (59°58’N, 147°22W), Alaska to Fort Bragg (39°27’N, 123°47’W), California (Druehl 1969, 1970; Kjeldsen 1972). P. gardneri is found primarily in rocky intertidal and shallow subtidal locations (Scagel 1967...
Authors
Glenn R. VanBlaricom, Daniel C. Reed, Christopher Harrold, James L. Bodkin
Research on polar bears in Alaska, 1983-1985 Research on polar bears in Alaska, 1983-1985
Research on the ecology and status of polar bear populations in Alaska has continued since 1967. Research was a joint U.S. Fish and Wildlife Service/Alaska Department of Fish and Game effort until passage of the Marine Mammal Protection Act in 1972, and has been largely a Federal effort since then. In 1985, Alaskan polar beer research continues to be carried out by the Research Division...
Authors
Steven C. Amstrup
Occurrence of anadromous brown trout in two lower Columbia River tributaries Occurrence of anadromous brown trout in two lower Columbia River tributaries
No abstract available.
Authors
P.A. Bisson, J.L. Nielsen, M.W. Chilcote, B. A. Crawford, S.A. Leider
Potassium-argon ages of volcanic rocks from near Ankara, Central Turkey Potassium-argon ages of volcanic rocks from near Ankara, Central Turkey
No abstract available.
Authors
Jay A. Ach, Frederic H. Wilson