Alaska-Aleutian range batholith: Geochronology, chemistry, and relation to circum-Pacific plutonism
Bruce L. Reed, Marvin A. Lanphere
1973, GSA Bulletin (84) 2583-2610
Potassium-argon mineral ages and reconnaissance mapping of approximately 65,000 sq km in south-central Alaska indicate that the Mesozoic and Cenozoic plutonic rocks in the region were emplaced during three discrete intrusive epochs. Most of the plutonic rocks are part of the Alaska-Aleutian Range batholith; the remainder appear as outcrops in...
Permian paleogeography of the Arctic
J. Thomas Dutro Jr., R. Birute Saldukas
1973, Journal of Research of the U.S. Geological Survey (1) 501-507
Three large land areas were dominant in the Arctic during the Permian: Fennoscandia, central and southern Siberia (Angara), and Canada. Smaller landmasses were in China, the Seward-Chukotskiy region, northern and eastern Siberia, and near Alaska. Coal deposits and strata bearing land plants covered a large area in central Siberia; saline basins containing red beds formed...
Soda Creek springs - metamorphic waters in the eastern Alaska Range
D.H. Richter, D.E. Donaldson, R.A. Lamarre
1973, Journal of Research of the U.S. Geological Survey (1) 523-528
The Soda Creek springs are a group of small, cold mineral springs on the southern flank of the eastern Alaska Range. The spring waters contain anomalous concentrations of carbon dioxide, sodium, chlorine, sulfate, boron, and ammonia and are actively precipitating deposits of calcite and aragonite. Sparingly present in these deposits are mixed-layer illite-montmorillonite clays and...
Use of machine-processable field notes in a wilderness mapping project (Granite Fiords area), southeastern Alaska
Henry C. Berg, James G. Smith
1973, Journal of Research of the U.S. Geological Survey (1) 579-585
For reconnaissance geologic mapping and mineral resource evaluation of the Granite Fiords wilderness study area, we developed and used a system of machine-processable field notes. Preprinted field forms standardize notes and serve as checklists that insure collection of all available data. The use of this system cut in half the time required to record data...
Antarctic icebergs as a fresh water resource
W.F. Weeks, W. J. Campbell
1973, Polar Record (16) 661-665
In a recent study (Weeks and Campbell, in press), we made a rather complete examination of the idea that icebergs could advantageously be used as a source of fresh water. The origin of the general idea of transporting icebergs is obscure; it may date from the 1850's when ice was...
Tectonic history of the central Aleutian arc
Michael S. Marlow, David W. Scholl, E.C. Buffington, Tau Rho Alpha
1973, Geological Society of America Bulletin (84) 1555-1574
No abstract available....
Evidence for Quaternary movement on the McKinley strand of the Denali fault in the Delta River area, Alaska
J. H. Stout, J.B. Brady, F. Weber, R.A. Page
1973, Geological Society of America Bulletin (84) 939-948
Offset Holocene alluvial fans and drainages along the McKinley strand of the Denali fault near the Delta River in the east-central Alaska Range indicate as much as 50 to 60 m of right-lateral displacement during the last 10,000 yrs. Vertical movement of 6 to 10 m during the same time...
Two diamictons in a landslide scarp on Admiralty Island, Alaska, and the tectonic insignificance of an intervening peat bed
Robert D. Miller
1973, Journal of Research of the U.S. Geological Survey (1) 309-314
Two till-like diamictons, 700 feet above present sea level on Admiralty Island, Alaska, are separated by peat near the top of a landslide scarp. The lower diamicton is glaciomarine; the upper diamicton is probably a mudflow. The lower diamicton contains the foraminifer Elphidium clavatum Cushman, a species typical of fiords. Similar diamicton crops out along...
A spectrochemical method for determining the composition of native gold
A.L. Sutton, R.G. Havens, C.L. Sainsbury
1973, Journal of Research of the U.S. Geological Survey (1) 301-307
The spectrochemical method described herein for determining trace, minor, and major element distribution in native gold is applicable over a wide range of particle sizes and over a very large concentration range. The matrices of samples and standards are very closely matched. The method was tested on 100 nuggets from a gold sample collected in...
Late Quaternary sedimentation in the active eastern Aleutian Trench
David J. W. Piper, Roland von Huene, John R. Duncan
1973, Geology (1) 19-22
Sediments originally deposited on the Alaskan Abyssal Plain have been depressed to form the eastern Aleutian Trench. Simultaneously, a wedge of horizontally bedded sediments, about 1 km thick at its axis, has been deposited in the trench. The time-transgressive facies change between this wedge of sediment and the abyssal-plain sediment...
Field water-quality information along the proposed trans-Alaska pipeline corridor, September 1970 through September 1972
Jon W. Nauman, Donald R. Kernodle
1973, Report
Flood survey at proposed TAPS crossing of Yukon River near Stevens Village, Alaska
Joseph M. Childers, Robert D. Lamke
1973, Report
No abstract available....
Timing of mesozoic and cenozoic plutonic events in circum-Pacific North America
Marvin A. Lanphere, Bruce L. Reed
1973, GSA Bulletin (84) 3773-3782
Evaluation of isotopic ages of granitic intrusive rocks of large batholiths in circum-Pacific North America indicates that Mesozoic and Cenozoic plutonism was episodic but not periodic. Three intrusive epochs have been defined in the Alaska-Aleutian Range batholith of Alaska on the basis of...
Lithostrotion reiseri n. sp., a cerioid colonial coral from Meramec-age beds, Lisburne Group, arctic Alaska
Augustus K. Armstrong
1973, Journal of Research of the U.S. Geological Survey (1) 137-145
Lithostrotion reiseri n. sp. is a cerioid, colonial coral, index fossil for microfossil zones 12-13 (Meramec) in the Lisburne Group in the central and eastern Brooks Range, arctic Alaska....
Upper Cretaceous (Maestrichtian) fossils from the Kenai-Chugach Mountains, Kodiak and Shumagin Islands, Southern Alaska
Sandra H. B. Clark, David L. Jones
1973, Journal of Research of the U.S. Geological Survey (1) 125-136
A thick sequence of highly deformed flyschlike metasandstone, slate, and argillite crops out in southern Alaska in the Kenai-Chugach Mountains and on Kodiak and the Shumagin Islands to the southwest. These poorly fossiliferous rocks have long been considered Cretaceous in age because of scattered occurrences of fragmentary shells of Inoceramus. Mainly on the basis of...
Radiochemical monitoring of water after the Cannikin event, Amchitka Island, Alaska, October 1972
L.J. Schroder, Wilbur C. Ballance
1973, Report
The U.S. Geological Survey collected water samples from Arnchitka Island, Alaska, during October 1972. Tritium determinations were made on all samples collected and gross alpha and gross beta/gamma determinations were made on 41 samples. The gross alpha and gross beta determinations when compared with previously determined ranges for fresh waters...
Summary of chemical and radiochemical monitoring of water for the Cannikin event, Amchitka Island, Alaska, fiscal year 1972
L.J. Schroder, Wilbur C. Ballance
1973, Report
An increased dissolved-solids content was found immediately after the Cannikin event (November 6, 1971) at most of 10 locations in a water-sampling network established in 1967 and revised in September 1971. The observed dissolved-solids content increase was within the seasonal range that has been observed at these locations. No measurable increase...
Biochemical monitoring of water after the Cannikin event, Amchitka Island, Alaska, August 1973
Wilbur C. Ballance
1973, Report
Radiochemical data from the Amchitka Island study area were obtained from water samples collected by the U.S. Geological Survey during August 1973. Tritium determinations were made on 86 samples collected and gross alpha and gross beta/gamma determinations were made on 38 samples. The range of data for these samples was...
Hydraulic tests in hole UAe-3, Amchitka Island, Alaska
Wilbur C. Ballance
1973, Report
Inflatable straddle packers were used to isolate and test selected intervals in hole UAe-3. Packer seats were poor in the uncased part of the hole because of unstable wall conditions, and leakage around packers occurred during some tests. However, leakage generally was slight, as shown on pressure-gage charts, and had...
Radiochemical monitoring of water after the Cannikin event, Amchitka Island, Alaska, July 1972
Wilbur C. Ballance, L.J. Schroder
1973, Report
The U.S. Geological Survey established a sampling program on Amchitka Island in 1967 in cooperation with the U.S . Atomic Energy Commission. Water samples are analyzed routinely for tritium, gross alpha, and gross beta/gamma content, Frequency of sampling was semiannually prior to Cannikin and has been bimonthly since the Cannikin...
Radiometric ages of Kodiak Seamount and Giacomini Guyot, Gulf of Alaska: Implications for circum-pacific tectonics
D. L. Turner, R. B. Forbes, Charles W. Naeser
1973, Science (182) 579-581
Kodiak Seamount and Giacomini Guyot have been dated at 22.6 ± 1.1 and 19.9 ± 1.0 [2σ (standard deviation)] x 106 years, respectively. Concordant whole-rock and...
Drought displaced movement of North American pintails into Siberia
Charles J. Henny
1973, Journal of Wildlife Management (37) 23-29
During the years 1954-70, 230 pintails (Anas acuta) banded in North America were reported from eastern Asia, primarily Siberia. Most of the birds were shot on the breeding grounds in May. The movement into eastern Asia of pintails banded in the interior of North America was directly correlated with the...
Snowy owl predation on lapland longspur nestlings recorded on film
T. W. Custer
1973, The Auk (90) 433-435
During the summer of 1971 I investigated the breeding biology of the Lapland Longspur, Calcarius lapponicus, near Barrow, Alaska. To obtain data on incubation and feeding patterns of nesting longspurs, time-lapse cameras (Minolta Autopak-8 D6 super-8 movie cameras equipped with an Intervalometer-P time-lapse device) were positioned at several nests throughout...
Preliminary seismic results from Cannikin
Carl A. Posey, editor(s)
1972, Earthquake Information Bulletin (USGS) (4) 16-21
No abstract available....
Geomagnetic effects of Cannikin
Carl A. Posey, editor(s)
1972, Earthquake Information Bulletin (USGS) (4) 8-11
No abstract available....
