Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 9 of 9
Full-Text Articles in Entire DC Network
Sequence Stratigraphy, Distribution And Preservation Of Organic Carbon, And Reservoir Properties Of The Middle Devonian Marcellus Shale, Of The Central Appalachian Basin; Northern West Virginia And Southwestern Pennsylvania, Roy L. Sexton Iv
Graduate Theses, Dissertations, and Problem Reports
The Middle Devonian Marcellus Shale of the central Appalachian basin is an unconventional resource play with approximate aerial extent of 34,000,000 acres (137,000 km²), and an estimated 84 trillion cubic feet (2.4 trillion m³) of recoverable natural gas and three billion barrels of recoverable natural gas liquids. Advances in drilling and completion technology have enabled economic production of hydrocarbons from the Marcellus. Despite increased exploration and production of the formation, uncertainties remain regarding controls on spatial and stratigraphic variations in reservoir properties such as total organic carbon (TOC), mineralogic composition, and authigenic components. Additionally, there is a lack of understanding …
Geologic And Geomorphic Controls Of Alluvial Island Location In Cheat River, West Virginia, Mitzy L. Schaney
Geologic And Geomorphic Controls Of Alluvial Island Location In Cheat River, West Virginia, Mitzy L. Schaney
Graduate Theses, Dissertations, and Problem Reports
Cheat River of north central West Virginia and southwestern Pennsylvania is a stable moderately sinuous mountain river with numerous anabranching reaches that include 81 alluvial islands. Relatively stable features, Cheat River alluvial islands are characterized by woody vegetation or human habitation, an elevation equal to or greater than the surrounding floodplain, and a perennially exposed emergent surface surrounded by active channels. Valley geometry, lithology, and tributary input are the main geologic and geomorphic controls selected to assess island location in Cheat River. Islands are more numerous in wide valleys with extensive floodplains; these valleys occur in lithologic segments dominated by …
Geomorphic Analysis Of Stream Crossings In A Portion Of The Upper Cheat River Basin, Joshua A. White
Geomorphic Analysis Of Stream Crossings In A Portion Of The Upper Cheat River Basin, Joshua A. White
Graduate Theses, Dissertations, and Problem Reports
An inventory and analysis of culverts as vertebrate migration barriers has been completed in a relatively pristine portion of the Upper Cheat River basin, Randolph and Tucker counties, West Virginia. Investigators in four different disciplines contributed to the project, including the geomorphological research represented by this thesis. This project had an underlying purpose to assess the potential for stream mitigation credits through a possible future stream mitigation banking program.;Several conditions appear correlated with problem culvert sites. Calvin high base substratum-Belmont-Meckesville soil association is associated with the greatest amounts of instability and aggradation at culvert sites. Three-quarters of the study area …
Depositional Environments, Age, And Regional Correlation Of The Black Hand Sandstone Member Of The Cuyahoga Formation And The Lower Mississippian Of The Central Appalachians, David L. Matchen
Graduate Theses, Dissertations, and Problem Reports
The Black Hand Sandstone Member of the Cuyahoga Formation of Ohio is a multistory, conglomeratic sandstone. Primary lithofacies include trough and planar crossbedded sandstones and massive gravels. The contact between the Black Hand and the surrounding Cuyahoga Formation is sharp and scoured indicating that the contact is an unconformity and sequence boundary. The Black Hand was deposited in a low-sinuosity braided stream within an incised valley system. The river that deposited the Black Hand flowed northward. The Lower Mississippian is subdivided into two sequences.;The age of the Lower Mississippian was determined by surveying the existing literature. Data from the surrounding …
Seismic Interpretation And Structural Evaluation Of The Hope Basin, Alaska, Virginia L. Elswick
Seismic Interpretation And Structural Evaluation Of The Hope Basin, Alaska, Virginia L. Elswick
Graduate Theses, Dissertations, and Problem Reports
The Hope Basin is a Cenozoic basin located off the coast of Alaska, in the Bering Sea. Its initial formation was theorized to have occurred from right-lateral movement on the Kobuk fault, a strike-slip fault located in northwestern Alaska. However, from an interpretation of newly reprocessed seismic lines that are located in the southeastern portion of the basin, it is evident that distinct characteristics of strike-slip basins, as evaluated by past authors, are not present within the study area. Furthermore, a study of the tectonic history of the region lends itself to an alternate theory of orogenic collapse of the …
Kinematics Of Detachment Folding, Appalachian Valley And Ridge, West Virginia, Matthew N. Giffels
Kinematics Of Detachment Folding, Appalachian Valley And Ridge, West Virginia, Matthew N. Giffels
Graduate Theses, Dissertations, and Problem Reports
This study assesses the geometry and kinematics of a fold at the east edge of the Nittany Anticlinorium, Appalachian Valley and Ridge Province, West Virginia. Regional deformation consists of minor to major folds within two vertically stacked thrust sheets. Geometric analysis of a first-order fold in the upper, Silurian-Devonian sheet indicates it is a detachment fold with a detachment depth of up to four kilometers. The estimated detachment depth indicates involvement of the underlying, thrusted Cambrian-Ordovician sheet in the folding. Kinematic analysis of uplifted fold area relative to measured shortening amounts does not indicate a clear relationship. Finite strain measurements …
Recharge Dynamics Of A Perched Phreatic Aquifer, Joseph Neil Ketchum Jr.
Recharge Dynamics Of A Perched Phreatic Aquifer, Joseph Neil Ketchum Jr.
Graduate Theses, Dissertations, and Problem Reports
Numerous techniques were used to analyze recharge rates, timing, and mechanisms for a perched, phreatic aquifer. Recharge rates were estimated using fluid mass balance (FMB), integrated hydrograph separation (IHS), and innovative hydrograph manipulation techniques. Timing and mechanisms of recharge were analyzed using signal-processing and linear-system approaches. Hydrometeorologic and hydrologic data were collected for a 16-month period (4/97 to 8/98) using both manual and automated techniques. Precipitation totaled 135.6 cm and evapotranspiration (ET) calculated using the Penman-Monteith method totaled 107.5 cm. Recharge estimates from FMB ranged from 20.3% to 33.6%. Springflows were modeled using a stage-discharge cross-correlation method. Recharge estimates from …
Fractal Analysis Of Topography And Structure Across The Appalachian Foreland Of West Virginia, Ashley Shannon Burns Douds
Fractal Analysis Of Topography And Structure Across The Appalachian Foreland Of West Virginia, Ashley Shannon Burns Douds
Graduate Theses, Dissertations, and Problem Reports
Fractal analysis was conducted on topographic relief and seismic reflection travel time data in the state of West Virginia to determine the potential influence of subsurface structure on surface topography. Seismic travel-times digitized from two east-west seismic profiles and topographic relief extracted in north-south and west-east directions from a 1:250,000 Digital Elevation Model (DEM) for the entire state were used in the analysis. A limited local study was also conducted of hand-drawn topographic profiles extracted from U.S.G.S. 1:24,000 topographic quadrangles over the Cottageville gas field in western West Virginia. This study also incorporated extraction of profiles in the same location …
Investigation Of A Paleocatena Across A Late Pennsylvanian Landscape Comprised Of Organic And Mineral Paleosols, Nick Fedorko Iii
Investigation Of A Paleocatena Across A Late Pennsylvanian Landscape Comprised Of Organic And Mineral Paleosols, Nick Fedorko Iii
Graduate Theses, Dissertations, and Problem Reports
Exposures of the Pittsburgh coal bed, its seatearth, and correlative rocks at six sites along a 79 mile-long traverse from Morgantown, West Virginia south to near Burnsville, West Virginia comprise a paleocatena of organic and mineral paleosols formed on a coeval landscape. Northern sites were poorly drained leading to weakly developed Inceptisol profiles in the seatearth followed by thick accumulations of organic matter. More highly evolved profiles developed at the better drained sites to the south contain: highly leached, kaolinitic A horizons; slickensided horizons; subsurface accumulation of iron oxide; strong soil structure; in-situ clay production and translocation; and redoximorphic concentrations …