Russellites, new genus, a problematical plant from the lower Permian of Texas
S.H. Mamay
1968, Professional Paper 593-I
Correlation and nomenclature of some Triassic and Jurassic rocks in south-central Wyoming
G. N. Pipiringos
1968, Professional Paper 594-D
Geology and mineral resources of the Barao de Cocais area, Minas Gerais, Brazil
G. C. Simmons
1968, Professional Paper 341-H
Biostratigraphy of the Phosphoria, Park City, and Shedhorn Formations, with a section on fish
E. L. Yochelson, D. H. Van Sickle
1968, Professional Paper 313-D
Radioactive waste dilution in the Clinch River, eastern Tennessee
P.H. Carrigan Jr.
1968, Professional Paper 433-G
Geographic map of the Tihamat Ash Sham quadrangle, Kingdom of Saudi Arabia
Glen F. Brown, Roy O. Jackson
1968, IMAP 216-B
Prepared by the U.S. Geological Survey and the Arabian American Oil Company under the joint sponsorship of the Kingdom of Saudi Arabia and the U.S. Department of State....
Geologic map of the Tremont quadrangle, Schuylkill and Northumberland Counties, Pennsylvania
Gordon H. Wood, J. Peter Trexler
1968, Geologic Quadrangle 692
Sand and gravel on the continental shelf off the northeastern United States
John Stevens Schlee
1968, Circular 602
Geologic map of the Redbush quadrangle, eastern Kentucky
Charles L. Rice
1968, Geologic Quadrangle 708
Methods of measuring water levels in deep wells
M. S. Garber, F. C. Koopman
1968, Techniques of Water-Resources Investigations 08-A1
Accurate measurement of water levels deeper than 1,000 feet in wells requires specialized equipment. Corrections for stretch and thermal expansion of measuring tapes must be considered, and other measuring devices must be calibrated periodically. Bore-hole deviation corrections also must be made. Devices for recording fluctuation of fluid level usually require...
Reconnaissance geologic map of part of the Milan quadrangle, New Hampshire-Maine, and the Percy quadrangle, New Hampshire
Daniel J. Milton
1968, Open-File Report 68-183
Geologic map of parts of the Majestic-Hurley and Wharncliffe quadrangles, Pike County, Kentucky
William F. Outerbridge
1968, Geologic Quadrangle 748
No abstract available....
Geologic map of the Mine Mountain quadrangle, Nye County, Nevada
Paul P. Orkild
1968, Geologic Quadrangle 746
Geologic map of the Pine Grove quadrangle, Schuylkill, Lebanon, and Berks Counties, Pennsylvania
Gordon H. Wood, Thomas M. Kehn
1968, Geologic Quadrangle 691
Geologic interpretation of reconnaissance aeromagnetic survey of northeastern Alaska
W. P. Brosge, E. E. Brabb, E. R. King
1968, Open-File Report 68-23
Aeromagnetic surveys of Naval Petroleum Reserve No. 4 (Woolson and others, 1962) and of a 900-square-mile area near Fairbands (Andreasen and others, 1964) are the only published aeromagnetic reports on northeastern Alaska.Several total intensity aeromagnetic profiles, primarily over the Yukon Flats in the central part of the area shown on...
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...
Reconnaissance geologic map of the Dufur quadrangle, Hood River, Sherman, and Wasco Counties, Oregon
A. C. Waters
1968, IMAP 556
Geologic map of the Ezel quadrangle, Morgan and Menifee Counties, Kentucky
G. N. Pipiringos, S.C. Bergman, Virgil A. Trent
1968, Geologic Quadrangle 721
Geologic map of the Nortonville quadrangle, Hopkins and Christian Counties, Kentucky
James Edward Palmer
1968, Geologic Quadrangle 762
Reconnaissance geologic map of the Eagle Rock quadrangle, Crook County, Oregon
A. C. Waters, R.H. Vaughan
1968, IMAP 540
Calcium carbonate, organic carbon, and nitrogen in sediments from drill holes on the continental margin off Florida
Jobst Hulsemann
1968, Professional Paper 581-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
Mineral resources of the Appalachian region
Water Resources Division, U.S. Geological Survey, U.S. Bureau of Mines
1968, Professional Paper 580
No abstract available....
Determination of channel capacity of the Merced River downstream from Merced Falls Dam, Merced County, California
J. C. Blodgett, G.L. Bertoldi
1968, Open-File Report 68-13
This study evaluates the adequacy of a reach of the Merced River between Merced Falls and the confluence with the San Joaquin River to carry flood releases from New Exchequer and McSwain Dams and Reservoirs. The flood release from these reservoirs is to be restricted so that flows will not...
Mica deposits of the Blue Ridge in North Carolina
Frank Gardner Lesure
1968, Professional Paper 577
Pegmatites in the Blue Ridge of North Carolina are important sources of sheet and scrap mica, feldspar, kaolin, and quartz. Small amounts of beryl, columbite-tantalite, monazite, samarskite, and uranium minerals also have been produced. The mica-bearing pegmatites occur in mica and hornblende gneiss and schist throughout the Blue Ridge province...