Publications
Browse recent USGS publications related to energy resources.
Filter Total Items: 2779
A numerical analysis of bid distributions in sealed tender markets A numerical analysis of bid distributions in sealed tender markets
No abstract available.
Authors
Emil D. Attanasi, S.R. Johnson, D.R. Kamerschen
Rutile and sphene in blueschist and related high-pressure facies rocks Rutile and sphene in blueschist and related high-pressure facies rocks
Sphene and rutile are characteristic accessory minerals of blueschist facies metamorphic rocks. However, only sphene is present in the lowerr grade blueschist assemblages. In many areas of the world these blueschists pass into, or are in fault contact with, higher grade glaucophane schists, rutile-bearing amphibolites, and eclogites. The origin of the rutile may be related to a prograde
Authors
M.C. Blake, Benjamin Morgan
Sequential bidding models--a decision theoretic approach Sequential bidding models--a decision theoretic approach
No abstract available.
Authors
Emil D. Attanasi, S.R. Johnson
Finding activity faults in the San Francisco Bay region Finding activity faults in the San Francisco Bay region
No abstract available.
Authors
Earl Brabb
Physical factors determining the fraction of stored energy recoverable from hydrothermal convection systems and conduction-dominated areas Physical factors determining the fraction of stored energy recoverable from hydrothermal convection systems and conduction-dominated areas
This report contains background analyses for the estimates of Nathenson and Muffler (1975) of geothermal resources in hydrothermal convection systems and conduction-dominated areas. The first section discusses heat and fluid recharge potential of geothermal reservoirs. The second section analyzes the physical factors that determine the fraction of stored energy obtainable at the surface...
Authors
Manuel Nathenson
Southern Patagonia—Glacial events between 4 m.y. and 1 m.y. ago Southern Patagonia—Glacial events between 4 m.y. and 1 m.y. ago
No abstract available.
Authors
John Mercer, Robert Fleck, Edward Mankinen, Walter Sander
Major chemical characteristics of Mesozoic Coast Range ophiolite in California Major chemical characteristics of Mesozoic Coast Range ophiolite in California
Sixty-four major element analyses of rocks representative of the Coast Range ophiolite in California were compared with analyses of other onland ophiolite sequences and those of rocks from oceanic ridges. The rocks can be classed in five groups harzburgite-dunite, clinopyroxenite-wehrlite, gabbro, basalt-spilite, and keratophyre-quartz keratophyre which on various diagrams occupy...
Authors
E. Bailey, Blake
An experimental study of the partitioning of a rare earth element (Gd) in the system diopside—Aqueous vapour An experimental study of the partitioning of a rare earth element (Gd) in the system diopside—Aqueous vapour
The partitioning of Gd in the experimental system diopside-aqueous vapor as a function of temperature, pressure, composition of the phases, time, grain size, solid-liquid ratio and Gd concentration has been investigated. A radioactive tracer measurement was used to determine Gd concentration in the separated phases. Diposides were reacted with aqueous vapor containing tracer Gd and...
Authors
Robert Zielinski, Frederick Frey
Fresh lunar impact craters: Review of variations in size Fresh lunar impact craters: Review of variations in size
Thirty-three morphologic characteristics are reviewed for fresh lunar impact craters wide than1 km. Bar graphs express the way each characteristic varies with crater size. The features are grouped as crater structure, ejecta, and downhill flow features. Major structural transition occur at diameters of about 15 and 200 km. Details of the ejecta blanket, which include several kinds of...
Authors
Keith Howard
Lunar basin formation and highland stratigraphy Lunar basin formation and highland stratigraphy
Multiring impact basins, formed after solidification of the lunar crust, account for most or all premare regional deposits and structures expressed in the lunar landscape and for major topographic and gravity variations. A fresh basin has two or more concentric mountain rings, a lineated ejecta blanket, and secondary impact craters. Crackled material on the floor may be impact melt. The...
Authors
Keith Howard, D.E. Wilhelms, D. Scott
Origin of Franciscan melanges in Northern California Origin of Franciscan melanges in Northern California
In northern California, chaotic Franciscan melange occurs beneath the overlying ophiolite and Great Valley Sequence. Identical melanges occur to the west, separating well-bedded, coherent Franciscan units that differ markedly in age. Detailed studies in several places indicate that these melanges mark the boundaries of imbricate thrust sheets, and they appear to occur at several discrete
Authors
M. Blake, D. Jones
Report on Circum-Pacific Energy and Mineral Resources Conferences Report on Circum-Pacific Energy and Mineral Resources Conferences
No abstract available.
Authors
M.T. Halbouty, J.F. Mason, E. Brabb