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Now showing items 21-30 of 34
Microstructural and Lattice-Preferred Orientation Analyses of Ductile Shear Zones: Maggia Nappe, Switzerland
Microstructures of 24 samples and quartz lattice-preferred orientations (LPO) of 13 samples from the crystalline Maggia Nappe, Switzerland were measured in order to assess the deformation history, mechanisms, and conditions ...
Late Wisconsin Glacier Surface Elevations and Flow Directions from the Beartooth Plateau to the Clarks Fork Valley, Wyoming
During the Pinedale glaciation of the Late Wisconsin, an ice cap covered most of the land comprising the Beartooth Plateau and the highlands to the south, stretching to the Clarks Fork Valley in northwestern Wyoming. The ...
The Stratigraphic Relationship of the Catoctin, Unicoi and Harpers Formations Within a Fault-bounded Rift Basin in Central Virginia
Sediments deposited within a rift basin that is now situated in the Blue Ridge region of central Virginia include spilitic metabasalt, which exhibit pillow structures, alluvial slump deposits, fluvial channel sands, deltaic ...
Martian North Polar Crater Morphology: Implications for an Aquifer
Recent studies of martian north polar craters have suggested that they have more cavity fill than the global crater population, and that the morphology of the crater fill is in some cases-similar to pingo structures on ...
The Sedimentology of the Snowden Member of the Late Precambrian-Early Cambrian (?) Harper's Formation in Central Virginia
The Snowden Member is the thickest and most mappable of the quartzose sandstone units of the heterogeneous Harpers Formation, the middle unit of the late Precambrian-early Cambrian(?)
Chilhowee Group in central Virginia. ...
Influence of the Kingak Formation Ultimate Shelf Margin on Frontal Structures of the Brooks Range in National Petroleum Reserve - Alaska (thesis)
Well and seismic data in the National Petroleum Reserve in Alaska (NPRA) demonstrate that the Jurassic—Lower Cretaceous Kingak Shale is present throughout NPRA. Several southward progradational depositional sequences within ...
Automated Cross-section Construction and Forward Modeling of the Northern Terminus of the Sequatchie Valley Anticline
Producing a balanced cross-section is a very time and labor intensive process. Balancing of a section requires boundary conditions for both the deformed and undeformed state. A common boundary condition for the undeformed ...
The Removal of the Jordan's Point Dam: Examining Channel Restructure and Sediment Mobilization (thesis)
The 2019 removal of the Jordan's Point Dam, a low-head concrete structure built in 1911 but predated by several older crib dams, is understood to have served as a significant
geomorphological event in the Maury River. ...
Assessing the Impact of Soil on Manganese Contamination in Springs and Groundwater in the Shenandoah Valley, Virginia (thesis)
A substantial fraction of the Shenandoah Valley, VA population relies on ground and spring water for domestic use. Manganese (Mn) is of particular concern in groundwater, as low-level
chronic exposure to aqueous Mn ...
Serpulids as Indicators of Mid-late Holocene Climate: Timing and Paleoclimate Significance of Large Worm Tube Aggregates, Lago Enriquillo, Dominican Republic
Large aggregates of calcareous serpulid worm tubes recorded paleoclimate conditions as they colonized the mid to late Holocene Enriquillo embayment, Dominican Republic. Serpulid worms flourished in the embayment following ...