Publications
Publications from the staff of the Geology, Minerals, Energy, and Geophysics Science Center
Filter Total Items: 2354
Plate tectonic history of the Yolla Bolly Junction, northern California: Geological Society of America Guidebook
No abstract available.
Authors
M. Clark Blake, A. S. Jayko, D. L. Jones
Significance of Mesozoic radiolarians from the pre-Nevadan rocks of the southern Klamath Mountains, California
Ribbon cherts and siliceous tuffs of the North Fork and Rattlesnake Creek terranes of the Klamath Mountains yield Mesozoic radiolarians. Rocks of the North Fork terrane were previously considered to be of Paleozoic age and those of the Rattlesnake Creek to be of Paleozoic and Triassic age, on the basis of fossiliferous limestone bodies that are now considered to be exotic blocks. In both terranes,
Authors
W. P. Irwin, D. L. Jones, E.A. Pessagno
Eocene and Oligocene planktonic Foraminifera from the upper Butano Sandstone and type San Lorenzo Formation, Santa Cruz Mountains, California
No abstract available.
Authors
R. Z. Poore, E. E. Brabb
Technique for concentrating nannoplankton from the Tertiary rocks of the California Coast and Peninsular Ranges
No abstract available.
Authors
S.W. Moore, E. E. Brabb, A. Warren
Deposition of the Tapeats Sandstone (Cambrian) in central Arizona
Grain size, bedding thickness, dispersion of cross-stratification azimuths, and assemblages of sedimentary structures and trace fossils vary across central Arizona; they form the basis for recognizing six facies (A through F) in the Tapeats Sandstone. Five of these (A through E), present in western central Arizona, are marine deposits containing the trace fossil Corophioides; several intertidal en
Authors
Richard Hereford
Composition of Pacific Ocean ferromanganese nodules
Bulk composition of ferromanganese nodules from the pelagic environment of the Pacific Ocean is apparently related to nodule-growth rate, sediment-accumulation rate, and biologic productivity in the overlying seawater. Nodules with a high MnFe ratio and high Ni and Cu concentrations tend to occur in areas where primary productivity in the surface layer of the ocean is high and the sediment-accumul
Authors
David Z. Piper, M.E. Williamson
The landslide hazard in the San Francisco Bay region
Development in hilly or mountainous terrain has resulted in much landslide damage. Areas susceptible to landsliding can be recognized. Practices for minimizing landslides are presented.
Authors
E. E. Brabb
Report of status of Reactor Hazards Research Program: fiscal years 1976-1977
The Reactor Hazards Research Program is a Geological Survey program directed at expediting the safe siting and design of power reactors in the United States through topical and regional work on major geological hazards, particularly faulting, earthquake shaking, volcanism, and gross failure of foundation materials (table 1). It is complimentary to the more directed research sponsored by the Nuclea
Authors
Carl M. Wentworth
Measured sections of Paleogene rocks from the California coast ranges
No abstract available.
Authors
Earl E. Brabb, Joseph C. Clark, Constance K. Throckmorton
Implications of a magnetic model of the Long Valley caldera, California
A quantitative magnetic model of Long Valley, California, shows that the magnetic field above this caldera is dominated by intracaldera Bishop tuff, part of the ash flow tuff whose eruption precipitated the caldera collapse. We propose that about half of the 350 km3 of intracaldera Bishop tuff, or that part beneath the resurgent dome, has been subjected to extensive hydrothermal alteration. The he
Authors
D.L. Williams, F. Berkman, Edward A. Mankinen
Preliminary report on the 17th cruise of the Dimitri Mendeleev
No abstract available.
Authors
E. H. Brown, R. G. Coleman, L.M. Echiverria, R.L. Fisher, W. P. Irwin