Standardization of gravimeter calibrations in the geological survey
David F. Barnes, Howard W. Oliver, Stephen L. Robbins
1969, Eos Science News (50) 526-527
The calibration of gravimeters has long been primarily the concern of geodesists involved in measuring large gravity differences, but recent developments suggest that the precision and stability of gravimeter calibrations may have greater geologic importance in the future. First, the use of high-speed computers and an increasing variety of supplemental...
Cretaceous, Tertiary, and early Pleistocene rocks from the continental margin in the Bering Sea
David M. Hopkins, David W. Scholl, Warren O. Addicott, Richard L. Pierce, Patsy Beckstead Smith, Jack A. Wolfe, David Gershanovich, Boris Kotenev, Kenneth E. Lohman, Jere H. Lipps, John D. Obradovich
1969, Geological Society of America Bulletin (80) 1471-1480
Rocks dredged from the continental margin in eastern Bering Sea in and near the Pribilof Canyon indicate that the acoustic basement represents the upper surface of thoroughly lithified turbidite beds of graywacke and siltstone of Late Cretaceous age. The stratified sequence covering the acoustic basement is gently deformed and includes...
Age and chemistry of mesozoic and tertiary plutonic rocks in south-central Alaska
Bruce L. Reed, Marvin A. Lanphere
1969, GSA Bulletin (80) 23-44
On the basis of potassium-argon mineral ages, plutonic rocks in an area of approximately 22,000 square miles in the southern Alaska Range and the Aleutian Range can be assigned to age groups that show differences in chemical characteristics and geographic distribution. The plutonic groups are Early and Middle Jurassic, Late...
Heat flow in the Arctic
Arthur H. Lachenbruch, B. Vaughan Marshall
1969, Arctic (22) 300-311
Defines heat flow as the flux at the earth's solid surface of heat conducted from the interior; the heat-flow-unit (hfu) is on the order of 1-millionth calorie through each sq cm of the surface/sec, which is enough to melt a 4-mm layer of ice over the earth's surface/yr. Earth heat...
Stenothecoida, a proposed new class of Cambrian Mollusca
Ellis L. Yochelson
1969, Lethaia (2) 49-62
Cambridium, Bagenovia, and Stenothecoides, composing the Family Cambridiidae, a monotypic superfamily and an order, were in 1960 assigned (although with a query) to the molluscan class Monoplacophora. The basic error of this assignment, according to the author, was the assumption that these specimens are univalves. One specimen from Siberia and a...
Safety and survival in an earthquake
Water Resources Division, U.S. Geological Survey
1969, Report
Many earth scientists in this country and abroad are focusing their studies on the search for means of predicting impending earthquakes, but, as yet, an accurate prediction of the time and place of such an event cannot be made. From past experience, however, one can assume that earthquakes will continue...
Environmental impact of oil development in northern Alaska
Luna Bergere Leopold
1969, Report
It is reported that in the spring of 1969 a high official of one of the oil companies was flying over the area of oil development in the vicinity of Prudhoe Bay. He is quoted as saying "If the American people could see what we are doing to their land...
Paleozoic tectonic history of the Arctic basin north of Alaska
M. Churkin Jr.
1969, Science (165) 549-555
The geology of the margin of the Canada Basin, together with geophysical data, leads me to reject the continental subsidence theory for the origin of the deep Canada Basin. Instead, the Canada Basin is, I believe, a true and probably very ancient ocean basin floored by oceanic crust and rimmed...
Geochemical maps of an area northwest of the Chulitna River, central Alaska Range
C.C. Hawley, Allen L. Clark
1969, Open-File Report 69-123
An area northwest of the Chulitna River in west-central Alaska Range locally shows local anomalous concentrations of gold, silver, arsenic, copper, zinc, and lead in stream-sediment samples. Most stream sediments showing anomalous concentrations of metals can be correlated with either known or newly discovered deposits or occurrences described in Circular...
Home range and travels
L.F. Stickel
John A. King, editor(s)
1968, Book chapter, Biology of Peromyscus (Rodentia)
The concept of home range was expressed by Seton (1909) in the term 'home region,' which Burr (1940, 1943) clarified with a definition of home range and exemplified in a definitive study of Peromyscus in the field. Burt pointed out the ever-changing characteristics of home-range area and the consequent...
Seismic seiches from the March 1964 Alaska earthquake
Arthur McGarr, Robert C. Vorhis
1968, Professional Paper 544-E
Seismic seiches caused by the Alaska earthquake of March 27, 1964, were recorded at more than 850 surface-water gaging stations in North America and at 4 in Australia. In the United States, including Alaska and Hawaii, 763 of 6,435 gages registered seiches. Nearly all the seismic seiches were recorded at...
Geology of the Lake Peters area, northeastern Brooks Range, Alaska
Bruce L. Reed
1968, Bulletin 1236
Effects of the Alaska earthquake of March 27, 1964, on shore processes and beach morphology
Kirk W. Stanley
1968, Professional Paper 543-J
Some 10,000 miles of shoreline in south-central Alaska was affected by the subsidence or uplift associated with the great Alaska earthquake of March 27, 1964. The changes in shoreline processes and beach morphology that were suddenly initiated by the earthquake were similar to those ordinarily caused by gradual changes in...
Results of stream-sediment sampling between Windy Fork and Post River, southern Alaska Range
Raymond L. Elliott, Bruce L. Reed
1968, Open-File Report 68-94
Lead, zinc, and silver deposits at Bowser Creek, McGrath A-2 quadrangle, Alaska
Bruce L. Reed, Raymond L. Elliott
1968, Circular 559
Geochemical anomalies and metalliferous deposits between Windy Fork and Post River, southern Alaska Range
Bruce L. Reed, Raymond L. Elliott
1968, Circular 569
Geology of the Johnson River area, Alaska
George William Holmes, Helen Laura Foster
1968, Bulletin 1249
Metallic mineral resources map of the Teller quadrangle, Alaska
Edward Huntington Cobb, C.L. Sainsbury
1968, Open-File Report 68-61
Distribution of gold, copper, and some other metals in the McCarthy B-4 and B-5 quadrangles, Alaska
E. M. MacKevett, James G. Smith
1968, Circular 604
Metallic mineral resources map of the Ophir quadrangle, Alaska
Edward Huntington Cobb
1968, Open-File Report 68-52
Metallic mineral resources map of the Baird Mountains quadrangle, Alaska
Edward Huntington Cobb
1968, Open-File Report 68-40
Metallic mineral resources map of nine Alaska quadrangles: Holy Cross, Kotzebue, Melozitna, Norton Bay, Nulato, Prince Rupert, Survey Pass, Taku River, Unalakleet
1968, Open-File Report 68-60
No abstract available....
Cambrian trilobites of east-central Alaska
Allison R. Palmer
1968, Professional Paper 559-B
Results of stream sediment sampling in parts of the southern Alaska Range
Bruce L. Reed, Raymond L. Elliott
1968, Open-File Report 68-223
Geology and lode gold deposits of the Nuka Bay area, Kenai Peninsula, Alaska
Donald H. Richter
1968, Open-File Report 68-229
Nuka Bay is a deep, T-shaped fiord on the southeast coast of the Kenai Peninsula approximately 60 miles southwest of the port of Seward. Gold-bearing quartz veins were discovered in the area in 1918, and between 1920 and 1940 several small mines were in operation around the North and West...
