| Contents Notes |
INTRODUCTION: The Permian Earth / J. R. Hein -- Evolution of thought concerning the origin of the Phosphoria Formation, Western US Phosphate Field / J. R. Hein, R. B. Perkins and B. R. McIntyre -- REGIONAL STUDIES: The history of production of the Uestern Phosphate Field / S. M. Jasinski, W. H. Lee and J. D. Causey -- The Meade Peak Member of the Phosphoria Formation: Temporal and spatial variations in sediment geochemistry / R. B. Perkins and D. Z. Piper -- Regional analysis of spiculite faunas in the Permian Phosphoria basin: Implication for paleoceanography / B. L. Murchey -- Strain distribution and structural evolution of the Meade plate, southeastern Idaho / J. G. Evans -- GEOLOGICAL AND GEOCHEMICAL STUDIES IN SOUTHEAST IDAHO: The effects of weathering on the mineralogy of the Phosphoria Formation, southeast Idaho / A. C. Knudsen and M. E. Gunter -- Petrogenesis and mineralogic residence of selected elements in the Meade Peak Phosphatic Shale Member of the Permian Phosphoria Formation, southeast Idaho / R. I. Grauch et al. -- Weathering of the Meade Peak Phosphatic Shale Member, Phosphoria Formation: Observations based on uranium and its decay products / R. A. Zielinski et al. -- Mineral affinities and distribution of selenium and other trace elements in black shale and phosphorite of the Phosphoria Formation / R. B. Perkins and A. L. Foster -- GEOENVIRONMENTAL STUDIES: The Phosphoria Formation: A Model for forecasting global selenium sources to the environment / T. S. Presser et al. -- Lithogeochemistry of the Meade Peak Phosphatic Shale Member of the Phosphoria Formation, southeast Idaho / J. R. Herring and R. I. Grauch -- Rock leachate geochemistry of the Meade Peak Phosphatic Shale Member of the Phosphoria Formation, southeast Idaho / J. R. Herring -- Rex Chert Member of the Permian Phosphoria Formation: Composition, with emphasis on elements of environmental concern / J. R. Hein et al. -- Gaseous selenium and other elements in near-surface atmospheric samples, southeast Idaho / P. J. Lamothe and J. R. Herring -- Selenium loading through the Blackfoot River watershed: Linking sources to ecosystems / T. S. Presser et al. -- Selenium attenuation in a wetland formed from mine drainage in the Phosphoria Formation, southeast Idaho / L. L. Stillings and M. C. Amacher -- Selenium and other trace elements in water, sediment, aquatic plants, aquatic invertebrates, and fish from streams in SE Idaho near phosphate mining / S. J. Hamilton, K. J. Buhl and P. J. Lamothe -- Uptake of selenium and other contaminant elements into plants and implications for grazing animals in southeast Idaho / C. L. Mackowiak et al. -- MODELING STUDIES: Review of world sedimentary phosphate deposits and occurrences / G. J. Orris and C. B. Chernoff -- Western Phosphate Field - Depositional and economic deposit models / P. R. Moyle and D. Z. Piper -- Societal relevance, processing, and material flow of western phosphate - Refreshments, fertilizer, and weed killer / S. M. Jasinski. "This book provides the results of a multifaceted, multidisciplinary, multi-agency program headed by the US Geological Survey to study to 350,000 square kilometer Western US Phosphate Field. The program addresses mainly the Permian Phosphoria Formation (the world's largest phosphate deposit), including the nature of the Phosphoria sea, resource-reserve estimates, mineralogical-geochemical-tectonic evolution of the deposit, and present-day contaminant issues associated with release of selenium from waste-rock dumps produced during mining. This latter issue involves surface and ground water, soil, biota, and rock studies. The Phosphoria Formation occurs over extensive regions of Montana, Idaho, Wyoming, and Utah, where there are five operating mines that collectively produce about 15% of the US production of phosphate. Vanadium was also mined up until 1999 from the Phosphoria and the deposit was considered at one time as a potential source for uranium. The Phosphoria Formation is a world-class deposit and knowledge grained from these studies can be applied to many other deposits world-wide. This book will be of interest to environmental geologists and biologists, economic geologists, mineralogists, sedimentologists, oceanographers, geochemists, among others from industry, Federal-State-local governmental agencies, and academia"--Back cover. |
