Publications
Publications from the staff of the Geology, Minerals, Energy, and Geophysics Science Center
Filter Total Items: 2537
Preliminary metallogenic belt and mineral deposit maps for northeast Asia Preliminary metallogenic belt and mineral deposit maps for northeast Asia
The metallogenic belts and locations of major mineral deposits of Northeast Asia are portrayed on Sheets 1-4. Sheet 1 portrays the location of significant lode deposits and placer districts at a scale of 1:7,500,000. Sheets 2-4 portray the metallogenic belts of the region in a series of 12 time-slices from the Archean through the Quaternary at a scale of 1:15,000,000. For all four map...
Authors
Alexander A. Obolenskiy, Sergey M. Rodionov, Gunchin Dejidmaa, Ochir Gerel, Duk-Hwan Hwang, Elimir G. Distanov, Gombosuren Badarch, Alexander I. Khanchuk, Masatsugu Ogasawara, Warren J. Nokleberg, Leonid M. Parfenov, Andrei V. Prokopiev, Zhan V. Seminskiy, Alexander P. Smelov, Hongquan Yan, Gennandiy V. Birul’kin, Yuriy Davydov, Valeriy Yu. Fridovskiy, Gennandiy N. Gamyanin, Alexei V. Kostin, Sergey A. Letunov, Xujun Li, Valeriy M. Nikitin, Sadahisa Sotnikov, Vitaly I. Sudo, Alexander V. Spiridonov, Vitaly A. Stepanov, Fengyue Sun, Jiapeng Sun, Weizhi Sun, Valeriy M. Supletsov, Vladimir F. Timofeev, Oleg A. Tyan, Valeriy G. Vetluzhskikh, Koji Wakita, Yakov V. Yakovlev, Lydia M. Zorina
Use of a probabilistic neural network to reduce costs of selecting construction rock Use of a probabilistic neural network to reduce costs of selecting construction rock
Rocks used as construction aggregate in temperate climates deteriorate to differing degrees because of repeated freezing and thawing. The magnitude of the deterioration depends on the rock's properties. Aggregate, including crushed carbonate rock, is required to have minimum geotechnical qualities before it can be used in asphalt and concrete. In order to reduce chances of premature and...
Authors
Donald A. Singer, James D. Bliss
Preliminary northeast Asia geodynamics map Preliminary northeast Asia geodynamics map
This map portrays the geodynamics of Northeast Asia at a scale of 1:5,000,000 using the concepts of plate tectonics and analysis of terranes and overlap assemblages. The map is the result of a detailed compilation and synthesis at 5 million scale and is part of a major international collaborative study of the Mineral Resources, Metallogenesis, and Tectonics of Northeast Asia conducted...
Authors
Leonid M. Parfenov, Alexander I. Khanchuk, Gombosuren Badarch, Robert J. Miller, Vera V. Naumova, Warren J. Nokleberg, Masatsugu Ogasawara, Andrei V. Prokopiev, Hongquan Yan
Correction to “Basin‐centered asperities in great subduction zone earthquakes: A link between slip, subsidence, and subduction erosion?” Correction to “Basin‐centered asperities in great subduction zone earthquakes: A link between slip, subsidence, and subduction erosion?”
No abstract available.
Authors
Richard J. Blakely, Y. Sugiyama, David W. Scholl, P.A. Dinterman
Geologic map and digital database of the Bachelor Mountain 7.5' quadrangle, Riverside County, California Geologic map and digital database of the Bachelor Mountain 7.5' quadrangle, Riverside County, California
Open-File Report 03-102 contains a digital geologic map database of the Bachelor Mountain 7.5’ quadrangle, Riverside County, California that includes: ARC/INFO (Environmental Systems Research Institute, http://www.esri.com) version 7.2.1 coverages of the various elements of the geologic map. A Postscript file to plot the geologic map on a topographic base, and containing a Correlation of...
Authors
Douglas M. Morton, Michael P. Kennedy, Kelly R. Bovard, Diane Burns
Geologic map and digital database of the Romoland 7.5' quadrangle, Riverside County, California Geologic map and digital database of the Romoland 7.5' quadrangle, Riverside County, California
Open-File Report 03-102 contains a digital geologic map database of the Romoland 7.5’ quadrangle, Riverside County, California that includes: ARC/INFO (Environmental Systems Research Institute, http://www.esri.com) version 7.2.1 coverages of the various elements of the geologic map. A Postscript file to plot the geologic map on a topographic base, and containing a Correlation of Map...
Authors
Douglas M. Morton, Kelly R. Bovard, Gregory Morton
Geology of Badlands National Park: A preliminary report Geology of Badlands National Park: A preliminary report
Badlands National Park is host to perhaps the most scenic geology and landscape features in the Western Interior region of the United States. Ongoing erosion that forms the "badlands" exposes ancient sedimentary strata of Late Cretaceous through Oligocene age. Quaternary erosional and depositional processes are responsible for most of the modern landscape features in the park and...
Authors
Philip W. Stoffer
Geologic map of the Valjean Hills 7.5' quadrangle, San Bernardino County, California Geologic map of the Valjean Hills 7.5' quadrangle, San Bernardino County, California
Open-File Report 03-096 contains a digital geologic map database of the Valjean Hills 7.5' quadrangle, San Bernardino County, California that includes: ARC/INFO (Environmental Systems Research Institute, http://www.esri.com) version 8. 2 coverages of the various elements of the geologic map. A Postscript file to plot the geologic map on a topographic base, and containing a Correlation of...
Authors
J.P. Calzia, Bennie W. Troxel, Christian G. Raumann
Principal facts for 408 gravity stations in the vicinity of the Talkeetna Mountains, south-central Alaska Principal facts for 408 gravity stations in the vicinity of the Talkeetna Mountains, south-central Alaska
Gravity data were collected between 1999 and 2002 along transects in the Talkeetna Mountains of south-central Alaska as part of a geological and geophysical study of the framework geology of the region. The study area lies between 61° 30’ and 63° 45’ N. latitude and 145° and 151° W. longitude. This data set includes 408 gravity stations. These data, combined with the pre-existing 3,286...
Authors
Robert L. Morin, Jonathan M. G. Glen
Principal facts for gravity stations in the Dry Valley area, west-central Nevada and east-central California Principal facts for gravity stations in the Dry Valley area, west-central Nevada and east-central California
In June, 2002, the U.S. Geological Survey (USGS) established 143 new gravity stations and 12 new rock samples in the Dry Valley area, 30 miles north of Reno, Nevada, on the California - Nevada border (see fig. 1). This study reports on gravity, magnetic, and physical property data intended for use in modeling the geometry and depth of Dry Valley for groundwater analysis. It is part of a...
Authors
Elizabeth A. Sanger, David A. Ponce
Preliminary soil-slip susceptibility maps, southwestern California Preliminary soil-slip susceptibility maps, southwestern California
This group of maps shows relative susceptibility of hill slopes to the initiation sites of rainfall-triggered soil slip-debris flows in southwestern California. As such, the maps offer a partial answer to one part of the three parts necessary to predict the soil-slip/debris-flow process. A complete prediction of the process would include assessments of “where”, “when”, and “how big”...
Authors
Douglas M. Morton, Rachel M. Alvarez, Russell H. Campbell, Kelly R. Bovard, D. T. Brown, K. M. Corriea, J. N. Lesser
Geochemistry of Permian rocks from the margins of the Phosphoria Basin: Lakeridge core, western Wyoming Geochemistry of Permian rocks from the margins of the Phosphoria Basin: Lakeridge core, western Wyoming
The Permian Phosphoria Formation and interbedded units of the Park City Formation and Shedhorn Sandstone in western Wyoming represent deposition along a carbonate ramp at the eastern margin of the Phosphoria Basin, with portions of the Phosphoria units reflecting periods of upwelling and widespread phosphogenesis. Thickness-weighted slab-samples of these units were collected at a maximum...
Authors
Robert B. Perkins, Brandie McIntyre, James R. Hein, David Z. Piper