Geology and coal resources of the Elk Valley area, Tennessee and Kentucky
Kenneth John Englund
1968, Professional Paper 572
River adjustment to altered hydrologic regimen - Murrumbidgee River and paleochannels, Australia
Stanley Alfred Schumm
1968, Professional Paper 598
Airborne measurements of terrestrial radioactivity as an aid to geologic mapping
James A. Pitkin
1968, Professional Paper 516-F
Brachiopods of the Bois Blanc Formation in New York
A. J. Boucot, J.G. Johnson
1968, Professional Paper 584-B
A descriptive catalog of selected aerial photographs of geologic features in the United States
Charles Storrow Denny, C.R. Warren, D.H. Dow, W.J. Dale
1968, Professional Paper 590
Fluvial monazite deposits in the southeastern United States, with a section on mineral analyses
William C. Overstreet, A. M. White, J. W. Whitlow, P. K. Theobald Jr., D. W. Caldwell, N. P. Cuppels, Jerome Stone
1968, Professional Paper 568
No abstract available....
Calcium carbonate, organic carbon, and nitrogen in sediments from drill holes on the continental margin off Florida
Jobst Hulsemann
1968, Professional Paper 581-B
Geology and ore deposits of the Iron River-Crystal Falls district, Iron County, Michigan
Harold Lloyd James, C. E. Dutton, F.J. Pettijohn, K. L. Wier
1968, Professional Paper 570
River channel bars and dunes - Theory of kinematic waves
Walter Basil Langbein, Luna Bergere Leopold
1968, Professional Paper 422-L
A kinematic wave is a grouping cf moving objects in zones along a flow path and through which the objects pass. These concentrations may be characterized by a simple relation between the speed of the moving objects and their spacing as a result of interaction between them.Vehicular traffic has long...
Lead, copper, molybdenum, and zinc geochemical anomalies south of the Summitville district, Rio Grande County, Colorado
William N. Sharp, James Louis Gualtieri
1968, Circular 557
Gold in meteorites and in the earth's crust
Robert Sprague Jones
1968, Circular 603
The reported gold contents of meteorites range from 0.0003 to 8.74 parts per million. Gold is siderophilic, and the greatest amounts in meteorites are in the iron phases. Estimates ,of the gold content of the earth's crust are in the range of 0.001 to 0.006 parts per million....
Water temperatures in the lower Columbia River
Albert M. Moore
1968, Circular 551
Daily observations of water temperature for 20 sites in the lower Columbia River are presented in tabular form and in profile form by months for the period August 1941 to July 1942. The profiles show minimum, mean (average), and maximum water temperatures for those months from river mile 142 to...
Geochemical anomalies in the Swales Mountain area, Elko County, Nevada
Keith Brindley Ketner, James George Evans, Thomas D. Hessin
1968, Circular 588
The Poison Ridge volcanic center and related mineralization, Grand and Jackson Counties, Colorado
Douglas M. Kinney, G. A. Izett, R.U. King, R. B. Taylor
1968, Circular 594
Estimated use of water in the United States, 1965
Charles Richard Murray
1968, Circular 556
Estimates of water use in the United States for 1965 indicate that an average of about 310 bgd (billion gallons per day) were withdrawn for public-supply, rural domestic and livestock, irrigation, and industrial (including thermoelectric power)uses--that is, about 1,600 gallons per capita per day. This represents an increase of 15...
Gold distribution on the sea floor off the Klamath Mountains, California
George William Moore, Eli A. Silver
1968, Circular 605
Analyses of 82 samples collected from the surface of the continental shelf between the Oregon-California border and Eureka, Calif., indicate that the background gold content on this shelf is about 0.1 ppb (part per billion). Four anomalous tracts, which range in extent from 10 to 30 square kilometers, have gold...
Index of surface-water records to September 30, 1967 - Part 4, St. Lawrence River basin
B.A. Anderson, C.B. Ham
1968, Circular 574
Index of surface-water records to September 30, 1967 - Part 3, Ohio River basin
B.A. Anderson, C.B. Ham
1968, Circular 573
Index of surface-water records to September 30, 1967 - Part 2, South Atlantic slope and eastern Gulf of Mexico basins
B.A. Anderson, C.B. Ham
1968, Circular 572
Index of surface-water records to September 30, 1967 - Part 1, North Atlantic slope basins
B.A. Anderson, C.B. Ham
1968, Circular 571
An atomic-absorption method for the determination of gold in large samples of geologic materials
Gordon H. VanSickle, Hubert William Lakin
1968, Circular 561
A laboratory method for the determination of gold in large (100-gram) samples has been developed for use in the study of the gold content of placer deposits and of trace amounts of gold in other geologic materials. In this method the sample is digested with bromine and ethyl ether, the...
Platinum and associated elements at the New Rambler mine and vicinity, Albany and Carbon Counties, Wyoming
P. K. Theobald, Charles Emmet Thompson
1968, Circular 607
Platinum-group metals in the Medicine Bow Mountains were first identified by W. C. Knight in 1901. In the Medicine Bow Mountains, these metals are commonly associated with copper, silver, or gold in shear zones that cut a series of mafic igneous and metamorphic rocks. At the New Rambler mine, where...
Time of travel of water in the Great Miami River, Dayton to Cleves, Ohio
Daniel P. Bauer
1968, Circular 546
Favorable areas for prospecting adjacent to the Roberts Mountains thrust in southern Lander County, Nevada
John Harris Stewart, Edwin H. McKee
1968, Circular 563
Recent geologic mapping by the U.S. Geological Survey of more than 2,500 square miles of a relatively little-studied part of central Nevada has outlined four areas favorable for the discovery of metallic mineral deposits. In these areas, lower Paleozoic carbonate rocks crop out below the Roberts Mountains thrust, a widespread...
Rutile and topaz in Precambrian gneiss, Jefferson and Clear Creek Counties, Colorado
Douglas M. Sheridan, Richard B. Taylor, Sherman P. Marsh
1968, Circular 567
Disseminated rutile and major amounts of topaz have been identified in Precambrian topaz-quartz gneiss northwest of Evergreen, Colo. The rutile occurs in quartz-topaz-sillimanite gneiss that forms a stratigraphic unit which is 11 to 100 feet thick and is identified along strike for more than 7,000 feet. Three composite chip samples...