Publications
Listed below are publication products directly associated with the Geology, Energy & Minerals Science Center:
Filter Total Items: 1164
The Emma Bell deposit, Siskiyou Co., California: A possible low-grade source of chromite
The Emma Bell chromite deposit in Siskiyou County, California contains over 5 million tons of dunite averaging about 4 percent Cr2O3. Chromite is not evenly disseminated throughout the dunite, however. For the most part the deposit consists of many chromite-rich bands in sharp contact with, and separated by, common dunite containing 1 to 2 percent accessory chromite. Electron microprobe and petrog
Authors
B. R. Lipin, Nicholas Wetzel, S. M. Heinrich
Comparative anatomy of epithermal precious- and base-metal districts hosted by volcanic rocks: A talk presented at the GAC/MSC/GGU Joint Annual Meeting, May 11-13, 1983, Victoria, British Columbia
In order to distinguish dissimilar from similar features of epithermal districts, lithotectonic, mineralogical and geochemical traits are compiled for 15 such districts. The districts occur in structurally complex settings associated with silicic to intermediate volcanics. Affiliation with subduction environments on a continental scale and caldera settings on a regional scale is common but is not
Authors
Pamela Heald-Wetlaufer, Daniel O. Hayba, Nora K. Foley, J.A. Goss
Geologic estimates and future costs of strip mining coal
Geologic coal-resource appraisals, which typically describe the location and general characteristics of coalbeds, do not generally provide enough information to estimate the cost of developing the resource or to predict the escalation of costs expected to result from physical depletion. This paper considers the nature of data and methods of appraisal required to provide this cost information to po
Authors
E. D. Attanasi, E.K. Green
Mineral resources of the Big Frog Wilderness Study Area and additions, Polk County, Tennessee and Fannin County, Georgia
No abstract available.
Authors
John F. Slack, Gertrude C. Gazdik, Maynard L. Dunn
Depositional setting and diagenetic evolution of some Tertiary unconventional reservoir rocks, Uinta Basin, Utah
The Douglas Creek Member of the Tertiary Green River Formation underlies much of the Uinta basin, Utah, and contains large volumes of oil and gas trapped in a complex of fractured low-permeability sandstone reservoirs. In the southeastern part of the basin at Pariette Bench, the Eocene Douglas Creek Member is a thick sequence of fine-grained alluvial sandstone complexly intercalated with lacustrin
Authors
Janet K. Pitman, T. D. Fouch, M. B. Goldhaber
Chemical and mineralogical variation in the Pioneer Batholith, southwest Montana
No abstract available.
Authors
J. M. Hammarstrom
Physical variables and the petroleum discovery process
No abstract available.
Authors
Emil D. Attanasi, L. J. Drew, David H. Root
Economics and petroleum resource appraisal: The case of the Permian basin:
Estimates of oil and gas resources typically are presented in terms of proved and undiscovered resources. This paper presents a methodology for incorporating economic considerations into resource appraisals for petroleum basins. A cost algorithm is used to calculate estimates of the costs of finding and developing undiscovered oil and gas fields in the Permian basin. The sensitivity of the resourc
Authors
Emil D. Attanasi, T.M. Garland, J.H. Wood, William D. Dietzman, J.N. Hicks
Exploration decisions and firms in the mineral industries
The purpose of this paper is to demonstrate how physical characteristics of deposits and results of past exploration enter future exploration decisions. A proposed decision model is presented that is consistent with a set of primitive probabilistic assumptions associated with deposit size distributions and discoverability. Analysis of optimal field exploration strategy showed the likely firm respo
Authors
E. D. Attanasi
Economics and coal resource appraisal: strippable coal in the Illinois Basin ( USA)
Coal-resource appraisals generally describe the location and general characteristics of coal beds. Estimates are made of the average overburden depth (depth of the coal bed below the surface), bed thickness, and perhaps certain chemical properties of the coal [1]. Although such resource compilations represent an important initial step, neither they nor current estimates provide sufficient informat
Authors
E.D. Attanasi, E.K. Green
Analysis of petroleum discovery data: A forecast of the date of peak production
No abstract available.
Authors
D. H. Root, Emil D. Attanasi
World petroleum resource estimates and production forecasts: Implications for government policy
Resource estimates alone will not give advance warning of encroaching production difficulties. An analysis of the general stages in the evolution of petroleum production and discovery and of industry statistics provides an estimate of when the stage characterised by increasing production in the market economy countries outside the United States and Canada will end. The analysis indicates that the
Authors
David H. Root, Emil D. Attanasi