Index of surface-water records to September 30, 1967: Part 9. - Colorado River basin
H.P. Eisenhuth
1968, Circular 579
This report lists the streamflow and reservoir stations in the Colorado River basin for which records have been or are to be published in reports of the Geological Survey for periods through September 30, 1967. It supersedes Geological Survey Circular 509....
Index of surface-water records to September 30, 1967 - Part 8, Western Gulf of Mexico basins
H.P. Eisenhuth
1968, Circular 578
Index of surface-water records to September 30, 1967: Part 13. - Snake River basin
H.P. Eisenhuth
1968, Circular 583
This report lists the streamflow and reservoir stations in the Snake River basin for which records have been or are to be published in reports of the Geological Survey for periods through September 30, 1967. It supersedes Geological Survey Circular 513....
Index of surface-water records to September 30, 1967: Part 10. - The Great Basin
H.P. Eisenhuth
1968, Circular 580
This report lists the streamflow and reservoir stations in The Great Basin for which records have been or are to be published in reports of the Geological Survey for periods through September 30, 1967. It supersedes Geological Survey Circular 510....
Generalized hydrology of prairie potholes on the Coteau du Missouri, North Dakota
William Stewart Eisenlohr, Charles E. Sloan
1968, Circular 558
This report presents all the information, obtained during the investigation, that lends itself to generalization. It describes conditions on that part of the Coteau du Missouri where there is little integration of drainage systems. The surface of the glacial drift in this region is dotted with shallow depressions known as...
Anomalous concentrations of gold, silver, and other metals in the Mill Canyon area, Cortez quadrangle, Eureka and Lander Counties, Nevada
James E. Elliott, John David Wells
1968, Circular 606
The Mill Canyon area is in the eastern part of the Cortez window of the Roberts Mountains thrust belt in the Cortez quadrangle, north-central Nevada. Gold and silver ores have been mined from fissure veins in Jurassic quartz monzonite and in the bordering Wenban Limestone of Devonian age. Geochemical data...
The Vigil Network: Preservation and access of data
William W. Emmett, R. F. Hadley
1968, Circular 460-C
Index of surface-water records to September 30, 1967 - Part 11, Pacific slope basins in California
H.P. Eisenhuth
1968, Circular 581
Index of surface-water records to September 30, 1967 - Part 12, Pacific slope basins in Washington and upper Columbia River basin
H.P. Eisenhuth
1968, Circular 582
Interpreting pan-concentrate analysis of stream sediments in geochemical exploration for gold
Richard Philip Fischer, Frederick S. Fisher
1968, Circular 592
A study of methods of collecting and processing samples to determine whether or not gold is present in areas of moderate size was undertaken in the northwestern part of the San Juan Mountains, Colo. As part of this study, 57 samples of pan concentrates were taken from streams draining three...
Index of surface-water records to September 30, 1967 - Part 5, Hudson Bay and upper Mississippi River basins
H.P. Eisenhuth
1968, Circular 575
Potential for lode deposits in the Livengood gold placer district, east-central Alaska
Robert Lutz Foster
1968, Circular 590
The determination of gold in geologic materials by neutron-activation analysis using fire assay for the radiochemical separations
Jack James Rowe, Frederick Otto Simon
1968, Circular 599
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
Occurrences of gold and other metals in the Upper Chulitna district, Alaska
C. C. Hawley, A. L. Clark
1968, Circular 564
Geochemical and geophysical anomalies in the western part of the Sheep Creek Range, Lander County, Nevada
Garland Bayard Gott, Charles J. Zablocki
1968, Circular 595
Extensive geochemical anomalies are present along the west side of the Sheep Creek Range in Lander County, Nev. Anomalous concentrations of zinc, arsenic, mercury, silver, copper, lead, and to some extent gold, molybdenum, and antimony occur in iron-rich material along fracture planes and in quartz veins in Paleozoic formations. A...
Index of surface-water records to September 30, 1967 - Part 14, Pacific slope basins in Oregon and lower Columbia River basin
H.P. Eisenhuth
1968, Circular 584
Direct-current arc and alternating-current spark emission spectrographic field methods for the semiquantitative analysis of geologic materials
D. J. Grimes, A. P. Marranzino
1968, Circular 591
Two spectrographic methods are used in mobile field laboratories of the U. S. Geological Survey. In the direct-current arc method, the ground sample is mixed with graphite powder, packed into an electrode crater, and burned to completion. Thirty elements are determined. In the spark method, the sample, ground to pass...
Silver in veins of hypogene manganese oxides
D. F. Hewett
1968, Circular 553
Cassiterite in gold placers at Humboldt Creek, Serpentine-Kougarok area, Seward Peninsula, Alaska
C.L. Sainsbury, Reuben Kachadoorain, T. E. Smith, W. C. Todd
1968, Circular 565
No abstract available....
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
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...
