Energy and Minerals
Mission Areas L2 Landing Page Tabs
Analytical data for waters of the Harvard Open Pit, Jamestown Mine, Tuolumne County, California, March 1998-September 1999
The Jamestown mine is located in the Jamestown mining district in western Tuolumne County, California (see Fig. 1). This district is one of many located on or near the Melones fault zone, a major regional suture in the Sierra Nevada foothills. The districts along the Melones fault comprise the Mother Lode gold belt (Clark, 1970). The Harvard pit...Ashley, R.P.; Savage, K.S.
Digital database of mining-related features at selected historic and active phosphate mines, Bannock, Bear Lake, Bingham, and Caribou counties, Idaho
This report provides a description of data and processes used to produce a spatial database that delineates mining-related features in areas of historic and active phosphate mining in the core of the southeastern Idaho phosphate resource area. The data have varying degrees of accuracy and attribution detail. Classification of areas by type of...Causey, J. Douglas; Moyle, Phillip R.
The Cretaceous-Tertiary boundary interval in Badlands National Park, South Dakota
A marine K-T boundary interval has been identified throughout the Badlands National Park region of South Dakota. Data from marine sediments suggest that deposits from two asteroid impacts (one close, one far away) may be preserved in the Badlands. These impact-generated deposits may represent late Maestrichtian events or possibly the terminal K-T...Stoffer, Philip W.; Messina, Paula; Chamberlain, John A.; Terry, Dennis O.
A Gravity data along LARSE (Los Angeles Regional Seismic Experiment) Line II, Southern California
The U.S. Geological Survey conducted a detailed gravity study along part of the Los Angeles Regional Seismic Experiment (LARSE) transect across the San Fernando Basin and Transverse Ranges to help characterize the structure underlying this area. 249 gravity measurements were collected along the transect and to augment regional coverage near the...Wooley, R.J.; Langenheim, V.E.
Geologic map and digital database of the Porcupine Wash 7.5 minute Quadrangle, Riverside County, southern California
This data set maps and describes the geology of the Porcupine Wash 7.5 minute quadrangle, Riverside County, southern California. The quadrangle, situated in Joshua Tree National Park in the eastern Transverse Ranges physiographic and structural province, encompasses parts of the Hexie Mountains, Cottonwood Mountains, northern Eagle Mountains, and...Powell, Robert E.
Geologic constraints on the upper limits of reserve growth
For many oil and gas fields, estimates of ultimate recovery (the sum of cumulative production plus estimated reserves) tend to increase from one year to the next, and the gain is called reserve growth. Forecasts of reserve growth by the U.S. Geological Survey rely on statistical analyses of historical records of oil and gas production and...Stanley, Richard G.
Preliminary compilation of data for selected oil test wells in Northern California
Oil test wells can provide information on the depth, age, inclination, porosity, permeability, density, faulting, folding, and organic content of geologic formations mapped at the surface, or on units not recognized in surface outcrops. Formation density, as expressed in sonic and density logs commonly obtained when wells are drilled, has become...Brabb, Earl E.; Powell, Charles L.; Brocher, Thomas M.
Geologic map and database of the Roseburg 30' x 60' quadrangle, Douglas and Coos counties, Oregon
The Roseburg 30' x 60' Quadrangle covers the southeastern margin of the Oregon Coast Range and its tectonic boundary with Mesozoic terranes of the Klamath Mountains (see figures 1 and 2 in pamphlet, also shown on map sheet). The geologic framework of the Roseburg area was established by the pioneering work of Diller (1898), Wells and Peck, (1961)...Wells, Ray E.; Jayko, A.S.; Niem, A.R.; Black, G.; Wiley, T.; Baldwin, E.; Molenaar, K.M.; Wheeler, K.L.; DuRoss, C.B.; Givler, R.W.
Geologic map and map database of the Spreckels 7.5-minute Quadrangle, Monterey County, California
Introduction The Spreckels quadrangle lies at the north end of the Sierra de Salinas and extends from the Salinas Valley on the northeast across Los Laurelles Ridge south to Carmel Valley, an intermontane valley that separates the Santa Lucia Range from the Sierra de Salinas (fig. 1). The Toro Regional Park occupies the east-central part of the...Clark, Joseph C.; Brabb, Earl E.; Rosenberg, Lewis I.; Goss, Heather V.; Watkins, Sarah E.
The erosion of the Grand Canyon
No abstract available.Billingsley, George
Digital geologic map of Fawnskin 7.5' quadrangle, San Bernardino County, California
Version 1.1 of this Open-File Report contains a digital geologic map and map database of the Fawnskin 7.5' quadrangle, San Bernardino County, California, that includes: 1. ARC/INFO (Environmental Systems Research Institute) version 7.2.1 double-precision coverages of the various elements of the geologic map 2. A PostScript (.ps) file to plot the...Miller, F.K.; Matti, J.C.; Brown, H.J.; Powell, R.E.
Digital data for construction material sources reported by the Arizona Department of Transportation in 1977 for Maricopa County, Arizona
Material inventories for prospective sources of material for use in building roads and associated structures were prepared by Arizona for several counties including Maricopa County. The inventories provide information about pit locations, materials classification and type, and measures of some characteristics used to determine suitability for...Hirschberg, Douglas M.; Pitts, G. Stephen; Melcher, Henry L.; Bliss, James D.