Publications
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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 Map Unit
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
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 Units diagram
Authors
Douglas M. Morton, Kelly R. Bovard, Gregory Morton
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 larger stu
Authors
Elizabeth A. Sanger, David A. Ponce
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 stations, b
Authors
Robert L. Morin, Jonathan M. G. Glen
Economics of undiscovered oil in Federal Lands on the National Petroleum Reserve, Alaska
No abstract available.
Authors
E. D. Attanasi
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 interval
Authors
Robert B. Perkins, Brandie McIntyre, James R. Hein, David Z. Piper
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”. These maps em
Authors
Douglas M. Morton, Rachel M. Alvarez, Russell H. Campbell, Kelly R. Bovard, D. T. Brown, K. M. Corriea, J. N. Lesser
Correlation of the Klamath Mountains and Sierra Nevada
This report graphically portrays the broadly parallel tectonic development of the Klamath Mountains and Sierra Nevada from early Paleozoic to Early Cretaceous time. It is dedicated to J.S. Diller of the U.S. Geological Survey who, during his pioneer field studies a century ago, recognized significant similarities between these two important provinces. The report is based mainly on the numerous pub
Authors
William P. Irwin
Tephrostratigraphic relations and the timing and locations of faulting near Exile Hill at Yucca Mountain, Nevada
No abstract available.
Authors
David C. Buesch, R.C. Lung
Petroleum system and production characteristics of the Muddy (J) Sandstone (Lower Cretaceous) Wattenberg continuous gas field, Denver basin, Colorado
Wattenberg field is a continuous-type gas accumulation. Estimated ultimate recovery from current wells is 1.27 tcf of gas from the Lower Cretaceous Muddy (J) Sandstone. Mean gas resources that have the potential to be added to these reserves in the next 30 yr are 1.09 tcf; this will be primarily through infill drilling to recover a greater percentage of gas in place and to drain areas that are iso
Authors
Debra K. Higley, Dave O. Cox, Robert J. Weimer
Impact damage to dinocysts from the Late Eocene Chesapeake Bay event
The Chesapeake Bay impact structure, formed by a comet or meteorite that struck the Virginia continental shelf about 35.5 million years ago, is the focus of an extensive coring project by the U.S. Geological Survey and its cooperators. Organic-walled dinocysts recovered from impact-generated deposits in a deep core inside the 85-90 km-wide crater include welded organic clumps and fused, partially
Authors
Lucy E. Edwards, David S. Powars
Geologic map and digital database of the Yucaipa 7.5’ quadrangle, San Bernardino and Riverside Counties, California
IntroductionThis geologic database of the Yucaipa 7.5' quadrangle was prepared by the Southern California Areal Mapping Project (SCAMP), a regional geologic-mapping project sponsored jointly by the U.S. Geological Survey and the California Geological Survey. The database was developed as a contribution to the National Cooperative Geologic Mapping Program's National Geologic Map Database, and is in
Authors
Jonathan C. Matti, D. M. Morton, B. F. Cox, S. E. Carson, T. J. Yetter, P. M. Cossette, M. C. Wright, S. A. Kennedy, M. L. Dawson, R. M. Hauser