William H. Orem, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 130
Arsenic-bearing pyrite and marcasite in the Fire Clay coal bed, Middle Pennsylvanian Breathitt Formation, eastern Kentucky Arsenic-bearing pyrite and marcasite in the Fire Clay coal bed, Middle Pennsylvanian Breathitt Formation, eastern Kentucky
Arsenic concentrations determined on 11 lithotype samples from the Middle Pennsylvanian Breathitt Group Fire Clay coal bed, Leslie County, KY, range from 1 to 418 ppm (whole coal basis). The 11 lithotype samples, which vary in thickness from 4 to 18 cm, were sampled from a continuous 1.38 m channel sample, and were selected based on megascopic appearance (vitrain-rich versus attrital...
Authors
L.F. Ruppert, J.C. Hower, C.F. Eble
Ecosystem history of southern and central Biscayne Bay: Summary report on sediment core analyses - year two Ecosystem history of southern and central Biscayne Bay: Summary report on sediment core analyses - year two
The Comprehensive Everglades Restoration Plan (CERP) lists restoration of the timing, quantity, and quality of the natural flow of freshwater as one its primary goals. Before restoration can occur, however, the baseline conditions of the environment prior to significant human alteration must be established and the range of variation within the natural system must be determined. In...
Authors
G. Wingard, Thomas Cronin, Charles Holmes, Debra Willard, Gary S. Dwyer, Scott Ishman, William Orem, Christopher Williams, Jessica Albietz, Christopher Bernhardt, Carlos Budet, Bryan Landacre, Terry Lerch, Marci Marot, Ruth Ortiz
Impacts of sulfate contamination on the Florida Everglades ecosystem Impacts of sulfate contamination on the Florida Everglades ecosystem
No abstract available.
Authors
William Orem
Initial results of a 2D burial/thermal history model, central Appalachian basin, Ohio and West Virginia Initial results of a 2D burial/thermal history model, central Appalachian basin, Ohio and West Virginia
No abstract available.
Authors
E. L. Rowan, R. Ryder, J.E. Repetski, M.H. Trippi, L.F. Ruppert
Potential sources of hydrogel stabilization of Florida Bay lime mud sediments and implications for organic matter preservation Potential sources of hydrogel stabilization of Florida Bay lime mud sediments and implications for organic matter preservation
The fine grained carbonate mud sediments of central Florida Bay are resuspended quite easily. However, this disturbance is usually limited to the surficial ('floc') layer, as the underlying sediments appear to be stabilized by an hydrogelation involving the bulk organic matter. That gelation has occurred within these sediments is suggested from their physical behavior and an observed...
Authors
J.W. Louda, J.W. Loitz, A. Melisiotis, W. H. Orem
Introduction to mercury special issue Introduction to mercury special issue
[No abstract available]
Authors
A. Kolker, W. Orem, P. Lechler
Paleoecological insights on fixed tree island development in the Florida Everglades: I. environmental controls Paleoecological insights on fixed tree island development in the Florida Everglades: I. environmental controls
Palynological and geochemical analyses of sediment cores collected on two tree islands in the Florida Everglades indicate long-term hydrologic and chemical differences between tree islands and surrounding marshes and sloughs. Gumbo Limbo and Nuthouse tree islands are elongate, teardrop-shaped islands in Water Conservation Area 3B. Prior to tree island formation at both sites, pollen...
Authors
Debra Willard, James Murray, Charles Holmes, Michael Korvela, Daniel Mason, William Orem, D. Towles
Chemical evolution of the Salton Sea, California: Nutrient and selenium dynamics Chemical evolution of the Salton Sea, California: Nutrient and selenium dynamics
The Salton Sea is a 1000-km2 terminal lake located in the desert area of southeastern California. This saline (∼44 000 mg l−1 dissolved solids) lake started as fresh water in 1905–07 by accidental flooding of the Colorado River, and it is maintained by agricultural runoff of irrigation water diverted from the Colorado River. The Salton Sea and surrounding wetlands have recently acquired
Authors
Roy Schroeder, William Orem, Yousif Kharaka
Controls on boron and germanium distribution in the low-sulfur Amos coal bed, Western Kentucky coalfield, USA Controls on boron and germanium distribution in the low-sulfur Amos coal bed, Western Kentucky coalfield, USA
The Duckmantian-aged Amos coal bed is a thin (
Authors
J.C. Hower, L.F. Ruppert, D.A. Williams
Geochemistry of surface and pore water at USGS coring sites in wetlands of South Florida, 1994 and 1995 Geochemistry of surface and pore water at USGS coring sites in wetlands of South Florida, 1994 and 1995
In this report, we present preliminary data on surface and pore water geochemistry from 22 sites in south Florida sampled during 1994 and 1995. These results are part of a larger study designed to evaluate the role of biogeochemical processes in sediments in the cycling of carbon, nitrogen, phosphorus, and sulfur in the south Florida ecosystem. The data are briefly discussed in regard to...
Authors
William Orem, Harry Lerch, Peter Rawlik
Health impacts of coal and coal use: Possible solutions Health impacts of coal and coal use: Possible solutions
Coal will be a dominant energy source in both developed and developing countries for at least the first half of the 21st century. Environmental problems associated with coal, before mining, during mining, in storage, during combustion, and postcombustion waste products are well known and are being addressed by ongoing research. The connection between potential environmental problems with...
Authors
R. Finkelman, W. Orem, V. Castranova, C. A. Tatu, H. E. Belkin, B. Zheng, H.E. Lerch, S.V. Maharaj, A. L. Bates
Tracing sources of sulfur in the Florida Everglades Tracing sources of sulfur in the Florida Everglades
We examined concentrations and sulfur isotopic ratios (34S/32S, expressed as δ34S in parts per thousand [‰] units) of sulfate in surface water, ground water, and rain water from sites throughout the northern Everglades to establish the sources of sulfur to the ecosystem. The geochemistry of sulfur is of particular interest in the Everglades because of its link, through processes mediated...
Authors
A. L. Bates, W. H. Orem, J. W. Harvey, E.C. Spiker
Science and Products
Filter Total Items: 130
Arsenic-bearing pyrite and marcasite in the Fire Clay coal bed, Middle Pennsylvanian Breathitt Formation, eastern Kentucky Arsenic-bearing pyrite and marcasite in the Fire Clay coal bed, Middle Pennsylvanian Breathitt Formation, eastern Kentucky
Arsenic concentrations determined on 11 lithotype samples from the Middle Pennsylvanian Breathitt Group Fire Clay coal bed, Leslie County, KY, range from 1 to 418 ppm (whole coal basis). The 11 lithotype samples, which vary in thickness from 4 to 18 cm, were sampled from a continuous 1.38 m channel sample, and were selected based on megascopic appearance (vitrain-rich versus attrital...
Authors
L.F. Ruppert, J.C. Hower, C.F. Eble
Ecosystem history of southern and central Biscayne Bay: Summary report on sediment core analyses - year two Ecosystem history of southern and central Biscayne Bay: Summary report on sediment core analyses - year two
The Comprehensive Everglades Restoration Plan (CERP) lists restoration of the timing, quantity, and quality of the natural flow of freshwater as one its primary goals. Before restoration can occur, however, the baseline conditions of the environment prior to significant human alteration must be established and the range of variation within the natural system must be determined. In...
Authors
G. Wingard, Thomas Cronin, Charles Holmes, Debra Willard, Gary S. Dwyer, Scott Ishman, William Orem, Christopher Williams, Jessica Albietz, Christopher Bernhardt, Carlos Budet, Bryan Landacre, Terry Lerch, Marci Marot, Ruth Ortiz
Impacts of sulfate contamination on the Florida Everglades ecosystem Impacts of sulfate contamination on the Florida Everglades ecosystem
No abstract available.
Authors
William Orem
Initial results of a 2D burial/thermal history model, central Appalachian basin, Ohio and West Virginia Initial results of a 2D burial/thermal history model, central Appalachian basin, Ohio and West Virginia
No abstract available.
Authors
E. L. Rowan, R. Ryder, J.E. Repetski, M.H. Trippi, L.F. Ruppert
Potential sources of hydrogel stabilization of Florida Bay lime mud sediments and implications for organic matter preservation Potential sources of hydrogel stabilization of Florida Bay lime mud sediments and implications for organic matter preservation
The fine grained carbonate mud sediments of central Florida Bay are resuspended quite easily. However, this disturbance is usually limited to the surficial ('floc') layer, as the underlying sediments appear to be stabilized by an hydrogelation involving the bulk organic matter. That gelation has occurred within these sediments is suggested from their physical behavior and an observed...
Authors
J.W. Louda, J.W. Loitz, A. Melisiotis, W. H. Orem
Introduction to mercury special issue Introduction to mercury special issue
[No abstract available]
Authors
A. Kolker, W. Orem, P. Lechler
Paleoecological insights on fixed tree island development in the Florida Everglades: I. environmental controls Paleoecological insights on fixed tree island development in the Florida Everglades: I. environmental controls
Palynological and geochemical analyses of sediment cores collected on two tree islands in the Florida Everglades indicate long-term hydrologic and chemical differences between tree islands and surrounding marshes and sloughs. Gumbo Limbo and Nuthouse tree islands are elongate, teardrop-shaped islands in Water Conservation Area 3B. Prior to tree island formation at both sites, pollen...
Authors
Debra Willard, James Murray, Charles Holmes, Michael Korvela, Daniel Mason, William Orem, D. Towles
Chemical evolution of the Salton Sea, California: Nutrient and selenium dynamics Chemical evolution of the Salton Sea, California: Nutrient and selenium dynamics
The Salton Sea is a 1000-km2 terminal lake located in the desert area of southeastern California. This saline (∼44 000 mg l−1 dissolved solids) lake started as fresh water in 1905–07 by accidental flooding of the Colorado River, and it is maintained by agricultural runoff of irrigation water diverted from the Colorado River. The Salton Sea and surrounding wetlands have recently acquired
Authors
Roy Schroeder, William Orem, Yousif Kharaka
Controls on boron and germanium distribution in the low-sulfur Amos coal bed, Western Kentucky coalfield, USA Controls on boron and germanium distribution in the low-sulfur Amos coal bed, Western Kentucky coalfield, USA
The Duckmantian-aged Amos coal bed is a thin (
Authors
J.C. Hower, L.F. Ruppert, D.A. Williams
Geochemistry of surface and pore water at USGS coring sites in wetlands of South Florida, 1994 and 1995 Geochemistry of surface and pore water at USGS coring sites in wetlands of South Florida, 1994 and 1995
In this report, we present preliminary data on surface and pore water geochemistry from 22 sites in south Florida sampled during 1994 and 1995. These results are part of a larger study designed to evaluate the role of biogeochemical processes in sediments in the cycling of carbon, nitrogen, phosphorus, and sulfur in the south Florida ecosystem. The data are briefly discussed in regard to...
Authors
William Orem, Harry Lerch, Peter Rawlik
Health impacts of coal and coal use: Possible solutions Health impacts of coal and coal use: Possible solutions
Coal will be a dominant energy source in both developed and developing countries for at least the first half of the 21st century. Environmental problems associated with coal, before mining, during mining, in storage, during combustion, and postcombustion waste products are well known and are being addressed by ongoing research. The connection between potential environmental problems with...
Authors
R. Finkelman, W. Orem, V. Castranova, C. A. Tatu, H. E. Belkin, B. Zheng, H.E. Lerch, S.V. Maharaj, A. L. Bates
Tracing sources of sulfur in the Florida Everglades Tracing sources of sulfur in the Florida Everglades
We examined concentrations and sulfur isotopic ratios (34S/32S, expressed as δ34S in parts per thousand [‰] units) of sulfate in surface water, ground water, and rain water from sites throughout the northern Everglades to establish the sources of sulfur to the ecosystem. The geochemistry of sulfur is of particular interest in the Everglades because of its link, through processes mediated...
Authors
A. L. Bates, W. H. Orem, J. W. Harvey, E.C. Spiker