William H. Orem, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 130
Paleoclimate controls on late paleozoic sedimentation and peat formation in the central appalachian basin (U.S.A.) Paleoclimate controls on late paleozoic sedimentation and peat formation in the central appalachian basin (U.S.A.)
In the central Appalachian basin, at least two major climate changes affected sedimentation during the late Paleozoic. Stratigraphically, these two changes are indicated by the distribution of coal beds, the variation in coal quality, and the variation in rock lithologies. In latest Mississippian or earliest Pennsylvanian time, the climate changed from dry-seasonal tropical to ever-wet...
Authors
C. B. Cecil, R.W. Stanton, S.G. Neuzil, F.T. Dulong, L.F. Ruppert, B.S. Pierce
GEOLOGIC PROCESSES AFFECTING THE QUALITY OF THE UPPER FREEPORT COAL BED, WEST-CENTRAL PENNSYLVANIA. GEOLOGIC PROCESSES AFFECTING THE QUALITY OF THE UPPER FREEPORT COAL BED, WEST-CENTRAL PENNSYLVANIA.
The number or types of origins of the components of a coal bed cannot be determined from its bulk composition. Minerals such as quartz, calcite, and pyrite as well as macerals such as vitrinite can originate from a variety of processes that result from different depositional conditions. The Upper Freeport coal bed was studied and characterized by sampling and analyzing its mappable...
Authors
R.W. Stanton, C. B. Cecil, B.S. Pierce, L.F. Ruppert, F.T. Dulong
Descriptions and correlations of coal bed facies, Lower Freeport(?) coal bed, west-central Pennsylvania Descriptions and correlations of coal bed facies, Lower Freeport(?) coal bed, west-central Pennsylvania
No abstract available.
Authors
R.W. Stanton, B.S. Pierce, T.A. Moore, L.F. Ruppert
MICROCHARACTERIZATION OF ARSENIC- AND SELENIUM-BEARING PYRITE IN UPPER FREEPORT COAL, INDIANA COUNTY, PENNSYLVANIA. MICROCHARACTERIZATION OF ARSENIC- AND SELENIUM-BEARING PYRITE IN UPPER FREEPORT COAL, INDIANA COUNTY, PENNSYLVANIA.
Optical and scanning electron microscope as well as electron and proton microprobe techniques have been used in a detailed investigation of the modes of occurrence of arsenic and selenium in pyrite in Upper Freeport coal from the Homer City area, Indiana County, Pennsylvania. Polished blocks were prepared from columnar samples of the coal bed to represent particular zones continuously...
Authors
J.A. Minkin, R. B. Finkelman, C.L. Thompson, E. C. T. Chao, L.F. Ruppert, H. Blank, C. B. Cecil
Science and Products
Filter Total Items: 130
Paleoclimate controls on late paleozoic sedimentation and peat formation in the central appalachian basin (U.S.A.) Paleoclimate controls on late paleozoic sedimentation and peat formation in the central appalachian basin (U.S.A.)
In the central Appalachian basin, at least two major climate changes affected sedimentation during the late Paleozoic. Stratigraphically, these two changes are indicated by the distribution of coal beds, the variation in coal quality, and the variation in rock lithologies. In latest Mississippian or earliest Pennsylvanian time, the climate changed from dry-seasonal tropical to ever-wet...
Authors
C. B. Cecil, R.W. Stanton, S.G. Neuzil, F.T. Dulong, L.F. Ruppert, B.S. Pierce
GEOLOGIC PROCESSES AFFECTING THE QUALITY OF THE UPPER FREEPORT COAL BED, WEST-CENTRAL PENNSYLVANIA. GEOLOGIC PROCESSES AFFECTING THE QUALITY OF THE UPPER FREEPORT COAL BED, WEST-CENTRAL PENNSYLVANIA.
The number or types of origins of the components of a coal bed cannot be determined from its bulk composition. Minerals such as quartz, calcite, and pyrite as well as macerals such as vitrinite can originate from a variety of processes that result from different depositional conditions. The Upper Freeport coal bed was studied and characterized by sampling and analyzing its mappable...
Authors
R.W. Stanton, C. B. Cecil, B.S. Pierce, L.F. Ruppert, F.T. Dulong
Descriptions and correlations of coal bed facies, Lower Freeport(?) coal bed, west-central Pennsylvania Descriptions and correlations of coal bed facies, Lower Freeport(?) coal bed, west-central Pennsylvania
No abstract available.
Authors
R.W. Stanton, B.S. Pierce, T.A. Moore, L.F. Ruppert
MICROCHARACTERIZATION OF ARSENIC- AND SELENIUM-BEARING PYRITE IN UPPER FREEPORT COAL, INDIANA COUNTY, PENNSYLVANIA. MICROCHARACTERIZATION OF ARSENIC- AND SELENIUM-BEARING PYRITE IN UPPER FREEPORT COAL, INDIANA COUNTY, PENNSYLVANIA.
Optical and scanning electron microscope as well as electron and proton microprobe techniques have been used in a detailed investigation of the modes of occurrence of arsenic and selenium in pyrite in Upper Freeport coal from the Homer City area, Indiana County, Pennsylvania. Polished blocks were prepared from columnar samples of the coal bed to represent particular zones continuously...
Authors
J.A. Minkin, R. B. Finkelman, C.L. Thompson, E. C. T. Chao, L.F. Ruppert, H. Blank, C. B. Cecil