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Page 1337, results 33401 - 33425

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Allanites from the Boulder Creek batholith, Colorado
Nelson L. Hickling
1965, Open-File Report 65-70
This study of accessory allanites from the Boulder Creek batholith is an adjunct to the comprehensive petrologic study that batholith by George Phair and David Gottfried of the U.S. Geological Survey....
Hot brines and recent iron deposits in deeps of the Red Sea
A.R. Miller, C.D. Densmore, E.T. Degens, J.C. Hathaway, F.T. Manheim, P.F. McFarlin, R. Pocklington, A. Jokela
1965, Open-File Report 65-180
Sedimentary iron and heavy-metal deposits of undetermined size have been found in the middle of the Red Sea some 2000 meters below the surface of the sea. This discovery has been made from the Research Vessel Atlantis II, which is still at sea engaged in a series of oceanographic investigations which...
Plant microfossils of the Hazard No. 7 coal, Perry County, Kentucky
Robert M. Kosanke
1965, Open-File Report 65-89
The cooperative mapping program between the Kentucky Geological Survey and the U. S. Geological Survey has yielded a number of interesting and valuable by-products. As a part of the stratigraphic studies involving Carboniferous coal fields, R. M. Kosanke has been involved in a detailed analysis of spore floras from various...
Field determination of nanogram quantities of mercury in soils and rocks
Margaret Hinkle, Kam Wo Leong, F. N. Ward
1965, Open-File Report 65-71
A method for determining nanogram quantities of mercury in geological materials is based on the catalytic effect of mercury on the reaction of ferrocyanide with nitrosobenzene to produce a violet-covered compound whose intensity if proportional to the mercury present. The mercury is released by heating a sample of soil or...
Tectonic deformation, subaqueous slides, and destructive waves associated with the Alaskan March 27, 1964, earthquake: an interim geologic evaluation
George Plafker, L.R. Mayo
1965, Open-File Report 65-124
The great earthquake which struck Alaska on Good Friday, March 27, 1964, caused severe damage to the coast of south-central Alaska mainly through vertical tectonic displacements, subaqueous slides, and destructive waves of diverse origins.Notable changes in land level occurred over an area in excess of 50,000 square miles in a...
Geology and ore deposits of the central York Mountains, western Seward Peninsula, Alaska
C.L. Sainsbury
1965, Open-File Report 65-142
In the central York Mountains, carbonate rocks of Lower and Middle Ordovician age and aggregating at least 8,000 feet thick are thrust northward over slate and argillaceous limestone of pre-Ordovician age which were intruded by gabbro in pre-Ordovician time. Normal faults of four distinct systems cut the thrust plates, and...
Geology of the Romanzof Mountains, Brooks Range, northeastern Alaska
Edward G. Sable
1965, Open-File Report 65-141
This remote 700 square mile area in the Brooks Range is topographically rugged and geologically diverse; it contains a granitic pluton, low-grade metamorphic rocks, sedimentary rocks, and mafic igneous rocks, as well as glacial features.Rocks of sedimentary origin include from oldest to youngest:1.Neruokpuk Formation Middle and Upper Devonian(?), more than...