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Page 393, results 9801 - 9825

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Gold gradients and anomalies in the Pedro Dome-Cleary Summit area, Fairbanks district, Alaska
Robert B. Forbes, H.D. Pilkington, D. B. Hawkins
1968, Open-File Report 68-101
Anomalous gold values have been discovered in hydrothermally altered quartz diorite, quartz monzonite, and quartz mica schist at the head of Fox Creek; and in similarly altered quartz diorite in the Granite Creek area. Channel samples across some of these altered zones have produced anomalous gold values over widths which...
Geology of the Golden Zone mine area, Alaska
C.C. Hawley, Allen L. Clark, J. Alan Benfer
1968, Open-File Report 68-122
The Golden Zone mine area, in the upper Chulitna district, is underlain mainly by siltstone and tuff, volcanic conglomerate and breccia, and limestone. These rocks were invaded, probably in the Tertiary, by dikes and a small stock of porphyry. The ore deposits of the area are the Golden Zone breccia...
Reconnaissance geology, mineral occurrences, and geochemical anomalies of the Yentna district, Alaska
Allen L. Clark, C.C. Hawley
1968, Open-File Report 68-35
The Yentna district, in south-central Alaska, is underlain by slightly metamorphosed Mesozoic sedimentary rocks, and by sandstones, conglomerates and coaly minerals of the Tertiary Kenai Formation. The bedrock is locally covered by extensive surficial deposits of Quaternary and Recent (Holocene) age. The Mesozoic strata are cut by a quartz monzonite...
Progress report, 1966-1967: Water study - Greater Anchorage area, Alaska
William W. Barnwell, Raymond S. George
1968, Open-File Report 68-6
The purpose of the 5-year cooperative water resources study of the Greater Anchorage area by the Geological Survey is to appraise the water resources of the area and obtain data needed to solve water problems and to assist in the orderly development and management of the resource....
Platinum deposits of Alaska
John Beaver Mertie Jr.
1968, Open-File Report 68-177
The placer deposits of the Goodnews Bay district in southwestern Alaska have yielded the only significant production of platinum metals in the United States, although small amounts of platinum metals have been produced from other deposits in Alaska and elsewhere in the United States. The Goodnews Bay deposits were described...
Biostratigraphic classification of the marine Triassic in North America
N. J. Silberling, E. T. Tozer
1968, Book
Ammonoid faunas representative of every major part of Triassic time occur at one place or another in the marine Triassic strata of western and arctic North America. Though some intracontinental provincialism is evident, particularly among Lower and Middle Triassic ammonoid faunas, various local sections where parts of the faunal sequence...
Geology, paleomagnetism, and potassium-argon ages of basalts from Nunivak Island, Alaska
J. M. Hoare, William H. Condon, Allan Cox, G. Brent Dalrymple
1968, Book chapter, Studies in Volcanology
Geologic mapping, paleomagnetic stratigraphy, and potassium-argon dating were used to determine the time and volume relations of tholeiitic and alkalic basalt on Nunivak Island in the Bering Sea near the coast of Alaska. Volcanism on Nunivak Island occurred in distinct episodes separated by quiet intervals that lasted from 1.6 to...