Ice-sheet glaciation of the Puget lowland, Washington, during the Vashon Stade (late Pleistocene)
R.M. Thorson
1980, Quaternary Research (13) 303-321
During the Vashon Stade of the Fraser Glaciation, about 15,000–13,000 yr B.P., a lobe of the Cordilleran Ice Sheet occupied the Puget lowland of western Washington. At its maximum extent about 14,000 yr ago, the ice sheet extended across the Puget lowland between the Cascade Range and Olympic Mountains and...
Circum-arctic plate accretion - Isolating part of a pacific plate to form the nucleus of the Arctic Basin
M. Churkin Jr., J.H. Trexler Jr.
1980, Earth and Planetary Science Letters (48) 356-362
A mosaic of large lithospheric plates rims the Arctic Ocean Basin, and foldbelts between these plates contain numerous allochthonous microplates. A new model for continental drift and microplate accretion proposes that prior to the late Mesozoic the Kula plate extended from...
Biogenic and thermogenic origins of natural gas in Cook Inlet basin, Alaska.
George E. Claypool, C. N. Threlkeld, L. B. Magoon
1980, American Association of Petroleum Geologists Bulletin (64) 1131-1139
Two types of natural gas occurrences are present in the Cook Inlet basin. The major reserves (1.8 × 1011m3) occur in shallow (less than 2,300 m), nonassociated dry gas fields that contain methane with ^dgr13C in the range of -63 to -56 per mil. These gas fields are in sandstones...
Salmonella meningoencephalomyelitis in a northern fur seal (Callorhinus ursinsus)
R. K. Stroud, M.E. Roelke
1980, Journal of Wildlife Diseases (16) 15-18
Salmonella enteritidis was isolated from the brain of a neonatal northern fur seal (Callorhinus ursinus) with gross and microscopic lesions of meningoencephalomyelitis. Microscopic lesions in the liver and lung suggested septicemia....
Paleozoic paleomagnetism and northward drift of the Alexander terrane, southeastern Alaska
R. Van Der Voo, M. Jones, C. S. Grommé, G.D. Eberlein, M. Churkin Jr.
1980, Journal of Geophysical Research Solid Earth (85) 5281-5296
Paleozoic limestone, graywacke, sandstone, milestone, red beds and volcanic rocks of the Alexander terrane, southeastern Alaska, have yielded six paleomagnetic pole positions after thermal and alternating-field demagnetization. These poles are from sample groups of late Middle Ordovician, Late Ordovician, Devonian, Late Devonian, and early and late Carboniferous age. To test...
United States Geological Survey Yearbook, fiscal year 1978
Water Resources Division, U.S. Geological Survey
1979, Report
Fiscal year 1978 saw the U.S. Geological Survey continuing to perform its basic historical missions of collecting, analyzing, and disseminating information about the Earth, its processes, and its water and mineral resources. Classifying Federal lands and supervising lessee mineral extraction operations on those lands were also major Survey concerns during...
Environmental aspects of engineering geological mapping in the United States
Dorothy H. Radbruch-Hall
1979, Bulletin of the International Association of Engineering Geology (19) 351-358
Many engineering geological maps at different scales have been prepared for various engineering and environmental purposes in regions of diverse geological conditions in the United States. They include maps of individual geological hazards and maps showing the effect of land development on the environment. An approach to assessing the environmental...
Volcanic ash in surficial sediments of the Kodiak shelf - An indicator of sediment dispersal patterns
M. A. Hampton, A.H. Bouma, T. P. Frost, I.P. Colburn
1979, Marine Geology (29) 347-356
Surficial sediments of the Kodiak shelf, Gulf of Alaska, contain various amounts of volcanic ash whose physical properties indicate that it originated from the 1912 Katmai eruption. The distribution of ash is related to the shelf physiography and represents redistribution by oceanic circulation rather than the original depositional pattern from...
CDP seismic sections of the western Beaufort continental margin
Stephen Eittreim, Arthur Grantz
1979, Tectonophysics (59) 251-262
The continental rise, slope, and shelf in the Beaufort Sea off northern Alaska were surveyed with 5600 km of common-depth-point (CDP) seismic data by the U.S. Geological Survey in 1977. The lower continental rise consists of a wedge of at least 4.5 km of low-velocity, generally flat-lying, parallel-bedded sediments. Slump-related...
Geology and tectonic development of the continental margin north of Alaska
Arthur Grantz, Stephen Eittreim, David A. Dinter
1979, Tectonophysics (59) 263-291
The continental margin north of Alaska, as interpreted from seismic reflection profiles, is of the Atlantic type and consists of three sectors of contrasting structure and stratigraphy. The Chukchi sector, on the west, is characterized by the deep late Mesozoic and Tertiary North Chukchi basin and the Chukchi Continental Borderland....
Clay mineralogy, fine-grained sediment dispersal, and inferred current patterns, lower Cook Inlet and Kodiak shelf, Alaska
James R. Hein, Arnold H. Bouma, Monty A. Hampton, Ross C. Robin
1979, Sedimentary Geology (24) 291-306
Because lower Cook Inlet and Kodiak shelf are being explored and developed for their petroleum resources, it is essential for environmental reasons to understand the sediment dispersal routes and current patterns. The Susitna River flows into upper Cook Inlet and is the source of clay minerals in Holocene deposits found...
Geologic map of the Gulkana A-2 quadrangle, Alaska
Donald H. Richter
1979, Geologic Quadrangle 1520
Geologic map of the Seward and Blying Sound quadrangles, Alaska
R. G. Tysdal, J. E. Case
1979, IMAP 1150
Surficial geologic map of the Wiseman quadrangle, Alaska
T. D. Hamilton
1979, Miscellaneous Field Studies Map 1122
Generalized geologic map of Chignik and Sutwik Island quadrangles, Alaska
R. L. Detterman, T. P. Miller, M. E. Yount, Frederic H. Wilson
1979, Miscellaneous Field Studies Map 1053-A
A study of reservoir characteristics of the Nanushuk and Colville groups, Umiat test well 11, National Petroleum Reserve in Alaska
J. E. Fox, P. W. Lambert, Janet K. Pitman, C.H. Wu
1979, Circular 820
Cretaceous sandstones in the Umiat Anticline contain the largest volume of oil discovered to date in the National Petroleum Reserve in Alaska. Umiat test well 11, although dry and abandoned, penetrated the most complete sequence of Cretaceous rocks in the Umiat area. Cretaceous formations cored (oldest to youngest) were the...
Preliminary report on the petrography and geochemistry of basalt from the Pribilof Islands and vicinity, southern Bering Sea
Florence Lee-Wong, T.L. Vallier, D.M. Hopkins, M.L. Silberman
1979, Open-File Report 79-1556
Alkali basalt from the Pribilof Islands has been described by several workers (Washington and Keyes, 1930; Barth, 1956; Cox and others, 1966; and Kay, 1977). This report complements the previous reports by providing new petrographic and geochemical data for samples from St. Paul and St. George Islands and from two...
Geologic road log, Alyeska haul road, Alaska, June-August 1975
Thomas D. Hamilton
1979, Open-File Report 79-227
No abstract available....
Quaternary stratigraphic sections with radiocarbon dates, Chandalar Quadrangle, Alaska
Thomas D. Hamilton
1979, Open-File Report 79-751
Surficial geologic mapping of the Chandalar quadrangle was carried out during 1975 and 1976 as part of the Arctic Environmental Program of the U.S. Geological Survey. Ten organic samples were collected at that time for radiocarbon dating. Six samples have been dated by Stephen W. Robinson at the U.S. Geological...
Radiocarbon dates and Quaternary stratigraphic sections, Philip Smith Mountains Quadrangle, Alaska
Thomas D. Hamilton
1979, Open-File Report 79-866
Notes on the acquisition of high resolution seismic reflection profiles, side-scanning sonar records, and sediment samples from lower Cook Inlet and Kodiak Shelf, R/V Sea Sounder Cruise S8-78-WG, August 1978
Monty A. Hampton, Arnold H. Bouma
1979, Open-File Report 79-1311
The third U.S. Geological Survey geo-environmental cruise in lower Cook Inlet and on the Kodiak shelf and adjacent continental slope, Gulf of Alaska, was conducted aboard the R/V SEA SOUNDER from 2 August to 22 August, 1978 (Fig. 1, 2, and 3). The objectives of the cruise were to study...
Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Valdez Quadrangle, Alaska
Edward Huntington Cobb
1979, Open-File Report 79-1241
These summaries of references are designed to aid in library research on metallic and nonmetallic (other than mineral fuels and construction materials) mineral occurrences in the Valdez quadrangle, Alaska. All references to most reports of the Geological Survey, the U.S. Bureau of Mines, and the State of Alaska Division of...
Spectrographic data for the ash of ground birch (Betula rotundifolia Sarg.) leaves and black spruce (Picea mariana B.S.P.) needles collected from the Tanacross 1:250,000-scale quadrangle, Alaska
Gordon W. Day, Gary C. Curtin, Theodore M. Billings
1979, Open-File Report 79-1355
No abstract available....
Selected Geological Survey, U.S. Bureau of Mines, and Alaska Division of Geological and Geophysical surveys reports and maps on Alaska released during 1978, indexed by quadrangle
Edward Huntington Cobb
1979, Open-File Report 79-706
This open—file report lists all Geological Survey, U.S. Bureau of Mines, and State of Alaska Division of Geological and Geophysical Surveys reports and maps on the geology, geophysics, and mineral and water resources of Alaska published or released to open files in 1978. They are listed by the quadrangles (scale...
Calc-alkaline plutonism along the Pacific rim of southern Alaska
Travis Hudson
1979, Open-File Report 79-953
Field, petrology, and age data on southern Alaska plutonic rocks now enable the delineation of eight calc-alkaline plutonic belts. These belts of plutons or batholithic complexes are curvilinear to linear and trend parallel or subparallel to the continental margin. The belts represent the principal loci of emplacement for plutons of...
