Geophysical data from the 1975 cruise of the NOAA ship Surveyor in northern Gulf of Alaska
Bruce Molnia, Paul R. Carlson, Lisa H. Wright
1978, Open-File Report 78-209
In April and Flay 1975, a U.S. Geological Survey marine geology field party under the leadership of Bruce F. Molnia and Paul R. Carlson collected geophysical data from the N.O.A.A. ship Surveyor. The cruise, which consisted of 3 legs, studied the area between Cross Sound and Seward (Figure 1). Maps...
K-Ar geochronology of the Survey Pass, Ambler River and Eastern Baird Mountains quadrangles, southwestern Brooks Range, Alaska
Donald L. Turner, R. B. Forbes, C.F. Mayfield
1978, Open-File Report 78-254
We report 76 previously unpublished K-Ar mineral ages from 47 metamorphic and igneous rocks in the southwestern Brooks Range. The pattern of radiometric ages is complex, reflecting the complex geologic history of this area. Local and regional radiometric evidence suggests that the southern Brooks Range schist belt has, at least...
High resolution seismic profiles, side scan sonar records, and sampling locations from lower Cook Inlet and Kodiak Shelf, R/V SEA SOUNDER cruise S7-77-WG, September - October, 1977
Arnold H. Bouma, Monty A. Hampton
1978, Open-File Report 78-727
During the period from September 14 through October 10, 1977 the second U.S. Geological Survey geo-environmental cruise was conducted in lower Cook Inlet and on the Kodiak shelf and adjacent upper continental slope, Gulf of Alaska, aboard the R/V SEA SOUNDER (Figure 1, Tables 1, 2 and 3). The objective...
Impact of coastal processes on resource development with an example from Icy Bay, Alaska
Bruce F. Molnia
1978, Open-File Report 79-1693
The coastline of Alaska is dynamic and continually readjusting to changes in the many processes that operate in the coastal zone. Because of this dynamic nature, special consideration must be made in planning for development, and. caution must be exercised in site selection for facilities to be emplaced in the...
Report on the beach dynamics, geology, and oil spill susceptibility of the Gulf of Alaska coastline in Glacier Bay National Monument -- Sea Otter Creek to Icy Point
Bruce Molnia, Mark C. Wheeler
1978, Open-File Report 78-284
Observations of the Gulf of Alaska coastline in Glacier Bay National Monument were conducted between June 1975 and July 1977 to: (1) characterize the beach environment, and (2) assess the effects of an oil spill (fig. 1). These included overflights in June 1975, June 1976, July 1976, January 1977, May...
Geological and geochemical appraisal of metallic mineral resources, southern National Petroleum Reserve in Alaska
Michael Churkin Jr., C.F. Mayfield, P. K. Theobald, Harlan Barton, W. J. Nokleberg, G. R. Winkler, Carl Huie
1978, Open-File Report 78-70-A
The United States Geological Survey in Alaska: Accomplishments during 1977
Kathleen M. Johnson, editor(s)
1978, Circular 772-B
United States Geological Survey projects in Alaska study a wide range of topics of economic and scientific interest. Work done in 1977 includes contributions to economic geology, regional geology, stratigraphy, engineering geology, hydrology, and marine geology. Many maps and reports covering various aspects of the geology and mineral and water...
Rotation of Alaska and the opening of the Canada Basin
Gary Wynn Boucher
1978, Open-File Report 78-96
Final results and statistical summary from analyses of stream-sediment and heavy-mineral-concentrate samples, Chignik and Sutwik Island quadrangles, Alaska
D.E. Detra, E.F. Cooley, R.T. Hopkins, R. M. O’Leary, D.R. Jefferis
1978, Open-File Report 78-1090
Geologic setting of the lead and zinc deposits, Drenchwater Creek area, Howard Pass Quadrangle, Western Brooks Range, Alaska
Warren J. Nokleberg, Gary R. Winkler
1978, Open-File Report 78-70-C
Significant concentrations of galena, sphalerite, and minor barite are present in the Drenchwater Creek area, Howard Pass quadrangle, western Brooks Range, Alaska. Detailed geologic mapping indicates that galena, sphalerite and pyrite occur sporadically in a zone at least 1,830 m. long and 6-30 m. wide. The sulfides occur in tuff,...
The United States Geological Survey in Alaska; organization and status of programs in 1978
Kathleen M. Johnson
1978, Circular 772-A
United States Geological Survey projects in Alaska study a wide range of topics of economic and scientific interest. Work done in 1977 includes contributions to economic geology, regional geology, stratigraphy, engineering geology, hydrology, and marine geology. Many maps and reports covering various aspects of the geology and mineral and water...
Analyses of rock samples from the Big Delta Quadrangle, Alaska
Helen Laura Foster, R. M. O’Leary, Stephen McDanal, A. L. Clark
1978, Open-File Report 78-469
Disseminated tin occurrence near Coal Creek, Talkeetna Mountains D-6 quadrangle, Alaska
Bruce L. Reed
1978, Open-File Report 78-77
No abstract available....
Stamukhi shoals of the Arctic - some observations from the Beaufort Sea
Erk Reimnitz, Douglas K. Maurer
1978, Open-File Report 78-666
A number of linear shoals, representing pronounced topographic anomalies on the surface of the Arctic shelf, have been studied in the Prudhoe Bay area. These shoals have been referred to in several previous studies. Based on seismic reflection records, Reimnitz et al., (1972a), stated that the shoals are constructional features...
Storm surges in the Alaskan Beaufort Sea
Erk Reimnitz, Douglas K. Maurer
1978, Open-File Report 78-593
Surface water records of Cook Inlet basin, Alaska, through September 1975
David R. Scully, Larry S. Leveen, Raymond S. George
1978, Open-File Report 78-498
This report summarizes records of streamflow and water temperature collected prior to October 1, 1975, in the Cook Inlet Basin of south-central Alaska. Streamflow records for gaging stations are tabulated as monthly and annual summaries and annual extremes. For those gaging stations at which continuous or daily water temperature records...
Late Miocene mollusks from the Queen Charlotte Islands, British Columbia, Canada
Warren O. Addicott
1978, Journal of Research of the U.S. Geological Survey (6) 677-689
A fauna of bivalve mollusks, scattered gastropods, and an echinoid from exposures of the Skonun Formation in the northeastern part of Graham Island is indicative of an early late Miocene age and correlation with the provincial Wishkahan Stage. The molluscan assemblages are from the upper 600 of the 1800-m-thick marine...
Ferroaxinites from the Feather River area, northern California, and from the McGrath and Russian Mission quadrangles, Alaska
Anna Hietanen, Richard C. Erd
1978, Journal of Research of the U.S. Geological Survey (6) 603-609
In the Feather River area, California, and in the McGrath quadrangle, Alaska, axinite-bearing veins occur as fracture fillings along or near the fault zones, suggesting that boron was introduced along the fractures. An unusual occurrence of axinite as a possible primary constituent of a plutonic rock is in the Russian...
A large landslide on Mars
Baerbel K. Lucchitta
1978, GSA Bulletin (89) 1601-1609
A large landslide deposit on the south wall of Gangis Chasma contains at least 100 billion m3of material that moved 60 km across the trough floor at a speed of more than 100 km/hr. The deposit consists of slump blocks at the head, hummocky material farther out, and a vast...
Refraction studies between Icy Bay and Kayak Island, eastern Gulf of Alaska
K.C. Bayer, R.E. Mattick, T.R. Bruns, George Plafker
1978, Journal of Research of the U.S. Geological Survey (6) 625-636
Results of five seismic refraction lines shot by the U.S. Geological Survey in the Gulf of Alaska between Icy Bay and Kayak Island indicate the following: (1) The Continental Shelf is underlain by as much as 11 km of sedimentary rock of probable Tertiary age where refraction velocities range from 1.2 to 5.5 kilometers per...
Meteorite impact crater in central Alaska
W. W. Patton Jr., T. P. Miller
1978, Science (201) 279-279
No abstract available....
Potassium-argon ages of basement rocks from Saint George Island, Alaska
D.M. Hopkins, M.L. Silberman
1978, Journal of Research of the U.S. Geological Survey (6) 435-438
Potassium-argon ages from basement granitic rocks that intrude serpentinized peridotite on St. George Island, Alaska, range from 50 to 57 million years, with an initial argon isochron age. interpreted as a minimum figure, of 52 ± 2 m.y. The age of the granitic rocks and their association with serpentinized peridotite...
Aleuts, sea otters, and alternate stable state communities
C.A. Simenstad, J. A. Estes, K.W. Kenyon
1978, Science (200) 403-411
Reexamination of stratified faunal components of a prehistoric Aleut midden excavated on Amchitka Island, Alaska, indicates that Aleut prey items changed dramatically during 2500 years of aboriginal occupation. Recent ecological studies in the Aleutian Islands have shown the concurrent existence of two alternate stable nearshore communities, one dominated by macroalgae,...
Megalineament in southeastern Alaska marks southwest edge of Coast Range batholithic complex
David A. Brew, A. B. Ford
1978, Canadian Journal of Earth Sciences (15) 1763-1772
The Coast Range megalineament is a prominent, nearly continuous topographic and structural feature that extends southeastward about 550 km (330 mi) from its junction with the Chatham Strait – Lynn Canal fault at Point Sherman to Tongass Passage near the mouth of Pearse Canal where it leaves southeastern Alaska. It probably extends...
A tuya in Togiak Valley, Southwest Alaska
J. M. Hoare, W. L. Coonrad
1978, Journal of Research of the U.S. Geological Survey (6) 193-201
The shape, composition, structure, and location of a conspicuous flat-topped mountain in the lower Togiak Valley, southwest Alaska, all indicate that it formed by a subglacial volcanic eruption of olivine basalt. Volcanoes of this type are known as "tuyas." The Togiak tuya erupted into an intraglacial lake in a hole...
