Experimental error in sample preparation and spectrographic analysis in the Jiddah laboratory, Saudi Arabia
P. K. Theobald Jr., Charles Emmet Thompson
1968, Open-File Report 68-267
Preliminary soil classification map of southwestern U.S. and Mexico from space photography
Roger B. Morrison
1968, Open-File Report 68-189
The December 1965 eruption of Kilauea Volcano, Hawaii
Richard S. Fiske, Robert Y. Koyanagi
1968, Professional Paper 607
Geochemistry of niobium and tantalum
Raymond Laurence Parker, Michael Fleischer
1968, Professional Paper 612
Preliminary map of the Negaunee 7 1/2 minute quadrangle, Marquette County, Michigan
Willard P. Puffett, C.E. Fritts
1968, Open-File Report 68-219
No abstract available. ...
Provisional topographic map, Isla Desecheo, Puerto Rico
Water Resources Division, U.S. Geological Survey
1968, Open-File Report 68-307
No abstract available. ...
Lead, zinc, and silver deposits at Bowser Creek, McGrath A-2 quadrangle, Alaska
Bruce L. Reed, Raymond L. Elliott
1968, Circular 559
Preliminary geologic map of the Gold Hill quadrangle, North Carolina
Harold W. Sundelius, Alfred R. Taylor
1968, Open-File Report 68-264
No abstract available....
Preliminary geologic map of Kemmerer quadrangle, Lincoln County, Wyoming
William W. Rubey, Steven S. Oriel, Joshua I. Tracey Jr.
1968, Open-File Report 68-235
Preliminary geologic map of Lunar Orbiter site orb II P-11
H. G. Wilshire
1968, Open-File Report 68-331
No abstract available....
Stratigraphy and structure of some Keweenawan rocks, Michigan
Harold Arthur Hubbard
1968, Open-File Report 68-141
No abstract available....
Quality of surface waters of the United States, 1960 parts 7 and 8, lower Mississippi river basin and western gulf of Mexico basins
S. K. Love
1968, Water Supply Paper 1744
Preliminary map showing faults in the Blackford Quadrangle, western Kentucky
Dewey H. Amos
1968, Open-File Report 68-1
No abstract available....
Preliminary geologic map of the Sahuarita quadrangle, Pima County, Arizona
Harald Drewes
1968, Open-File Report 68-89
Summary report on the geology and mineral resources of the Charons Gardens Unit, Wichita Mountains National Wildlife Refuge, Comanche County, Oklahoma
Edward L. Johnson
1968, Bulletin 1260-J
Geologic map of the David quadrangle, eastern Kentucky
William F. Outerbridge
1968, Geologic Quadrangle 720
Mineral resources of the Uncompahgre primitive area, Colorado
Richard Philip Fischer, R. G. Luedke, M.J. Sheridan, R.G. Raabe
1968, Bulletin 1261-C
Bibliography of reports resulting from U.S. Geological Survey participation in the United States Technical Assistance Program, 1940-67
Jo Ann Heath, Nancy B. Tabacchi
1968, Bulletin 1263
Engineering geology of the Paducah West and Metropolis quadrangles in Kentucky
Warren Irvin Finch
1968, Bulletin 1258-B
No abstract available....
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...
Utilization of humus-rich forest soil (mull) in geochemical exploration for gold
Gary C. Curtin, H. W. Lakin, G. J. Neuerburg, A.E. Hubert
1968, Circular 562
Distribution of gold in humus-rich forest soil (mull) reflects the known distribution of gold deposits in bedrock in the Empire district, Colorado. Gold from the bedrock is accumulated by pine and aspen trees and is concentrated in the mull by the decay of organic litter from the trees. Anomalies in...
Pn spectral variations of the Gasbuggy explosion at intermediate distance ranges
William Hung Kan Lee, Roger D. Borcherdt
1968, Open-File Report 68-166
No abstract available....
Stratigraphic significance and petrology of phosphate nodules at base of Niobrara Formation, east flank of Black Hills, South Dakota
H. A. Tourtelot, W. A. Cobban
1968, Professional Paper 594-L
Geologic map of the east flank of the Elkhorn Mountains, Broadwater County, Montana
Water Resources Division, U.S. Geological Survey
1968, Open-File Report 68-303
No abstract available....
Hydrologic investigations program of the Water Resources Department, Ministry of Public Works and Communication, Imperial Ethiopian Government
Walter Hofmann
1968, Open-File Report 73-115