Browsing Auburn Theses and Dissertations by Department "Geology and Geography"
Now showing items 81-100 of 110
Petrographic Analysis of Bonanza Epithermal Vein Textures at Buckskin National and Fire Creek Deposits, Northern Nevada
(2017-04-17)
The Buckskin National and Fire Creek epithermal deposits, which are located in the Northern Great Basin in northern Nevada, exhibit a variety of gangue-mineral vein textures. Gangue minerals, which are valueless minerals, ...
Petrographic Investigation of Selected Samples from Drill Cores Eyreville A and Eyreville B: Chesapeake Bay Impact Structure, Virginia
(2008-05-15)
The meteoritic impact process is expressed uniquely in marine, sedimentary target impact structures versus hard, dry crystalline targets. Wet sediments accommodate extreme pressures and temperatures differently than ...
PGE mineralization at the Allard stock: Implications for the porphyry to epithermal transition, La Plata Mountains, Colorado
(2014-06-06)
Geochemical and petrographic studies on the Allard stock, which hosts a porphyry Cu-Ag-Au-Te-PGE deposit in the La Plata Mountains of southwestern Colorado, suggest mantle sources for both metals and sulfur. Microprobe ...
Phosphatic Concretions and Ichnofossil Preservation in a Marine Lagerstätte, Ripley Formation, Central Alabama
(2006-05-15)
Phosphate concretions are common in the Upper Cretaceous Ripley Formation exposed along Dry Cedar Creek, Lowndes County, Alabama. Sedimentologic and ichnologic studies of concretions and host sediments were undertaken to ...
Practical Application of Petrographic Methods to Crushed Stone Aggregate Exploration: Comparing Microstructures and Grain Boundaries to Physical Quality Testing of Aggregate
(2015-12-14)
This research attempts to compare and correlate microscopic properties of aggregate material to the aggregates physical engineering properties. Material was collected and tested to obtain physical and mechanical properties ...
Preliminary Assessment of the Petroleum Source-Rock Potential of Upper Eocene Kopili Shale, Bengal Basin, Bangladesh
(2016-08-05)
The upper Eocene Kopili Shale occurs throughout the northern end of the Bengal Basin, including on the northwestern Indian Platform and in deeper basin areas (e.g., Sylhet Trough) of northeastern Bangladesh. The Kopili-equivalent ...
Provenance and Basin Tectonics of Oligocene-miocene Sequences of the Bengal Basin, Bangladesh
(2005-12-15)
Oligocene and Miocene strata of the Bengal basin, Bangladesh, show significant changes in sediment composition and record sediment-input history from different sources adjacent to the basin. Oligocene Barail sands (Qt70F2L28) ...
Provenance and Composition of Impactite Sands; AU Drill Core #09-04, Wetumpka Impact Structure, Alabama
(2014-04-29)
The Wetumpka impact structure is a Late Cretaceous shallow-marine impact crater about 6 km in diameter located in central Alabama. The target consisted of Upper Cretaceous sediments that were unconformably overlying Piedmont ...
Provenance of Lower Pennsylvanian Pottsville Formation, Cahaba Basin, Alabama
(2008-12-15)
The Cahaba basin, also known as the Cahaba Synclinorium, of north-central Alabama contains a thick (>2.5 km) synorogenic clastic wedge belonging to the Lower Pennsylvanian Pottsville Formation. Sediment composition and ...
Relationships between large benthic foraminifera and their seagrass habitats, San Salvador, Bahamas
(2006-05-15)
Vegetation beds are important in the ecology and depositional history of platform carbonates. The vegetation itself, frequently dominated by the seagrass Thalassia, has a low preservation potential, but plants and benthic ...
Remote Sensing of Shallow-Marine Impact Craters on Mars
(2007-12-15)
Impact craters are common on solid planetary bodies in our solar system and are one of the most important physical features from which the surface history of these planetary bodies can be deduced. Remote sensing is a ...
Saltwater Intrusion and Trace Element Contaminations at the Coastal Aquifers of the Ganges Delta
(2016-12-19)
The coastal area of Bangladesh has a low topography lying at the confluence of the Ganges and Brahmaputra river systems in the Bengal Basin. The distribution of aquifer sediments in the subsurface is very complex where ...
Sedimentation and Tectonic Evolution of Cenozoic Sequences from Bengal and Assam Foreland Basins, Eastern Himalayas
(2008-08-15)
The Himalayan Mountains developed due to the collision of the Indian and Eurasian plates. There are two large foreland basins south of the eastern Himalayas: Assam Basin, located near the eastern syntaxis of the Himalayas, ...
Sedimentation and Tectonics of Lower Cenozoic Sequences from Southeast of Shillong Plateau, India: Provenance History of the Assam-Bengal System, Eastern Himalayas
(2009-08-12)
The present study area is located along the southeastern part of the Shillong Plateau in the eastern and southeastern part of the Meghalaya State and in the lower (southern) part of Assam State, northeast India. A continuous ...
Sedimentology of the Toledo Formation, Belize Basin, Central America
(2017-04-25)
The Toledo formation represents a profound shift from carbonate-dominated to clastic-dominated deposition within the Belize basin following the Late Cretaceous collision of the Maya and Chortis blocks (of the North American ...
A sequence stratigraphic synthesis of the Lower Pennsylvanian Pottsville Formation encountered in two drill cores in the Cahaba synclinorium, Alabama
(2012-11-12)
The Lower Pennsylvanian Pottsville Formation is a classic clastic wedge of the Appalachian mountain system composed of interbedded sandstone, siltstone, claystone, shale, and coal beds with orthoquartzitic conglomerate at ...
Socioeconomic Disparities, Community Physical Environment, and Childhood Obesity in Alabama's Black Belt Region
(2015-04-30)
Health inequalities have been linked to socioeconomic disparities. These disparities are communal differences which have a profound influence on the physical environment. Scholarship has recently connected socioeconomic ...
Sorption of Arsenic by Iron Sulfide Made by Sulfate-reducing Bacteria: Implications for Bioremediation
(2008-12-15)
In this study, data from field bioremediation experiments, geochemical modeling, and laboratory batch experiments were integrated with published data on arsenic (As) sorption and coprecipitation onto growing iron (Fe)-sulfide ...
Spatial-Temporal Analysis of Heavy Metal Water Pollution and the Impact on Public Health in China
(2015-05-18)
Water is the source of life. China’s water pollution has become a burning research field because of the severely polluted conditions. 60 percent of the country's rivers were not potable according to the State Environmental ...
Stratigraphic and Paleoenvironmental Context of the Ingersoll Shale, An Upper Cretaceous Conservation Lagerstatte, Eutaw Formation, Eastern Alabama
(2007-08-15)
The Ingersoll shale, a thin (<1 m) clay-dominated lens within the Upper Cretaceous Eutaw Formation exposed in Russell County, Alabama, contains an exceptionally well-preserved, primarily terrestrial biota that includes a ...