Publications
Here you will find publications, reports and articles produced by geology, energy, and mineral scientists. For a comprehensive listing of all USGS publications, click the button below.
Filter Total Items: 1349
Preliminary geologic map of the Fillmore 7.5' quadrangle, Southern California: A digital database Preliminary geologic map of the Fillmore 7.5' quadrangle, Southern California: A digital database
This Open-File report is a digital geologic map database. This pamphlet serves to introduce and describe the digital data. There is no paper map included in the Open-File report. This digital map database is compiled from previously published sources combined with some new mapping and modifications in nomenclature. The geologic map database delineates map units that are identified by...
Authors
R.F. Yerkes, R. H. Campbell
Proposed stratigraphic nomenclature and macroscopic identification of lithostratigraphic units of the Paintbrush Group exposed at Yucca Mountain, Nevada Proposed stratigraphic nomenclature and macroscopic identification of lithostratigraphic units of the Paintbrush Group exposed at Yucca Mountain, Nevada
No abstract available.
Authors
D.C. Buesch, R. W. Spengler, T. C. Moyer, J. K. Geslin
Distribution of lithostratigraphic units within the central block of Yucca Mountain, Nevada; a three-dimensional computer-based model, version YMP.R2.0 Distribution of lithostratigraphic units within the central block of Yucca Mountain, Nevada; a three-dimensional computer-based model, version YMP.R2.0
No abstract available.
Authors
D.C. Buesch, James E. Nelson, Robert P. Dickerson, Ronald M. Drake, Richard W. Spengler, Jeffrey K. Geslin, Thomas C. Moyer, Carma A. San Juan
Alaska resource data file: Mount Michelson quadrangle Alaska resource data file: Mount Michelson quadrangle
No abstract available.
Authors
J. S. Kelly
Alaska resource data file: Holy Cross quadrangle Alaska resource data file: Holy Cross quadrangle
No abstract available.
Authors
W. J. Keith, Marti L. Miller
Alaska resource data file: Iditarod quadrangle Alaska resource data file: Iditarod quadrangle
No abstract available.
Authors
W. J. Keith, Marti L. Miller
Alaska resource data file: Demarcation Point quadrangle Alaska resource data file: Demarcation Point quadrangle
No abstract available.
Authors
John S. Kelley
Alaska resource data file: Umiat quadrangle Alaska resource data file: Umiat quadrangle
No abstract available.
Authors
John Stewart Kelley
Application of a feedforward neural network in the search for kuroko deposits in the Hokuroku District, Japan Application of a feedforward neural network in the search for kuroko deposits in the Hokuroku District, Japan
A feedforward neural network with one hidden layer and five neurons was trained to recognize the distance to kuroko mineral deposits. Average amounts per hole of pyrite, sericite, and gypsum plus anhydrite as measured by X-rays in 69 drillholes were used to train the net. Drillholes near and between the Fukazawa, Furutobe, and Shakanai mines were used. The training data were selected...
Authors
Donald A. Singer, Ryoichi Kouda
The role of serpentinite melanges in the unroofing of UHPM rocks: An example from the Western Alps of Italy: Chapter 6 The role of serpentinite melanges in the unroofing of UHPM rocks: An example from the Western Alps of Italy: Chapter 6
The ultrahigh pressure metamorphic rocks (UHPM) of the Dora-Maira continental massif are overlain by a stack of oceanic nappes. Metamorphic grade appears to increase downward but with marked discontinuities between each of the nappes, suggesting that section has been removed along the bounding faults. This apparent omission of section is greatest in the lowest oceanic unit where a...
Authors
M. Clark Blake, D.E. Moore, A. S. Jayko
Sources of the Early Cretaceous plutons in the Turtle and West Riverside Mountains, California Sources of the Early Cretaceous plutons in the Turtle and West Riverside Mountains, California
Ages and initial isotopic ratios of Early Cretaceous (˜100 Ma) plutons of the Cordilleran Interior in the southern Turtle and West Riverside mountains distinguish them from Late Cretaceous plutons in surrounding ranges in the eastern Mojave Desert. Furthermore, the studied plutons have isotopic and geochemical characteristics more similar to plutons of Cretaceous age in the coastal...
Authors
C. M. Allen, J. L. Wooden, Keith A. Howard, D.A. Foster, R. M. Tosdal