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Theses/Dissertations

Geology

Georgia State University

2009

Articles 1 - 8 of 8

Full-Text Articles in Physical Sciences and Mathematics

Evaluating The Effects Of Green Roofs As Tools For Stormwater Management In An Urban Metropolis, Robyn R. Polinsky Dec 2009

Evaluating The Effects Of Green Roofs As Tools For Stormwater Management In An Urban Metropolis, Robyn R. Polinsky

Geosciences Theses

Stormwater management is an essential aspect of urban hydrology. Urbanized areas have large amounts of impervious surface cover (ISC) and well developed sewer and drainage networks which rapidly channel water and pollutants off of streets and into local streams. This research evaluates the use of vegetated roofs as mechanisms to reduce ISC and stormwater runoff in downtown Atlanta. A 3-D model of the study site was created so that runoff rates could be measured for various rooftop scenarios under different size storm events. The results revealed a reduction in peak runoff and an increase in both the lag time and …

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Analysis Of Channel Networks And The Potential For Sediment Transport In The Vicinity Of The North Polar Seas Of Titan, Richard Cartwright Jul 2009

Analysis Of Channel Networks And The Potential For Sediment Transport In The Vicinity Of The North Polar Seas Of Titan, Richard Cartwright

Geosciences Theses

This study analyzes the available radar evidence in order to describe the morphology of channel networks around the north polar seas of Titan. Critical flow depths necessary to entrain water-ice grains, and denudation rates for a north polar channel network are discussed. The results indicate that channel networks on Titan have similar morphologies to channel networks cut by water on Earth. We also find that water-ice sediment should be readily entrained in the headwaters and downstream sections of the analyzed Titanian basin, given sufficient flow depths of liquid hydrocarbons. Also, the importance of slope and the elevated topography of the …

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Magmatic Evolution Of The Eocene Volcanic Rocks Of The Bijgerd Kuh E Kharchin Area, Uromieh-Dokhtar Zone, Iran, Armita Davarpanah Jul 2009

Magmatic Evolution Of The Eocene Volcanic Rocks Of The Bijgerd Kuh E Kharchin Area, Uromieh-Dokhtar Zone, Iran, Armita Davarpanah

Geosciences Theses

Composition and texture of the Middle and Late Eocene volcanic, volcaniclastic, and volcanic-sedimentary rocks in the Bijgerd-Kuh e Kharchin area, in the Uromieh-Dokhtar zone northwest of Saveh, Iran, suggest the complexity of the magmatic system that involved multiple eruptions from one or more sources. Hydrated volcanic fragments in hyaloclastic rocks, and the presence of a sequence of shallow and intermediate-depth marine microfossils, suggest that the Middle Eocene units were erupted in a marine basin. The bimodal volcanism of the Late Eocene is distinguished by the presence of four alternating sequences of hyaloclastite lava and ignimbrite. The REE patterns show spatial …

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Temporal Variations In Spring Water Chemistry And Comparison Of Variable Paleozoic Aquifer Discharges In The Ridge And Valley Province Of Northwestern Georgia, Oliver Wood Costello Apr 2009

Temporal Variations In Spring Water Chemistry And Comparison Of Variable Paleozoic Aquifer Discharges In The Ridge And Valley Province Of Northwestern Georgia, Oliver Wood Costello

Geosciences Theses

The fluctuations in solute concentrations from eight springs in the Ridge and Valley Province in northwestern Georgia were used to determine flow types and to measure each aquifer’s ability to remove contamination. The target springs are located along a northeast trending line in the Ridge and Valley Province of northwest Georgia. This study determined and interpreted the fluctuations in chemistry of each of the sampled spring’s water based upon temporal variations of precipitation in the area and variations in the chemistries measured at each weekly sampling event. Analysis determined that carbonate springs that showed characteristics of diffuse flow, including stable …

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Analysis Of Stream Runoff Trends In The Blue Ridge And Piedmont Of Southeastern United States, Usha Kharel Apr 2009

Analysis Of Stream Runoff Trends In The Blue Ridge And Piedmont Of Southeastern United States, Usha Kharel

Geosciences Theses

The purpose of the study was to examine the temporal trends of three monthly variables: stream runoff, rainfall and air temperature and to find out if any correlation exists between rainfall and stream runoff in the Blue Ridge and Piedmont provinces of the southeast United States. Trend significance was determined using the non-parametric Mann-Kendall test on a monthly and annual basis. GIS analysis was used to find and integrate the urban and non-urban stream gauging, rainfall and temperature stations in the study area. The Mann-Kendall test showed a statistically insignificant temporal trend for all three variables. The correlation of 0.4 …

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Race, Place, And Identity: Examining Place Identity In The Racialized Landscape Of Buckhead, Atlanta, Robert Edward Cochran Apr 2009

Race, Place, And Identity: Examining Place Identity In The Racialized Landscape Of Buckhead, Atlanta, Robert Edward Cochran

Geosciences Theses

This thesis examines the role of racialized practices in the discourses and processes that alter place identity. Drawing on ethnography from the East Village of Buckhead, a once vibrant nightlife district in Atlanta, I examine how discourses of danger, colorblindness, and the race card have been employed to “whitewash” the discussions about the redevelopment of the Village. In effect, the business and civic elite of Atlanta (and Buckhead) deployed racialized conceptualizations of group identity. In particular, they utilized “public safety” discourses to influence the Atlanta city government to support the redevelopment effort. This led to the elimination of the establishments …

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The Spaces Of Encounter Of Female Middle Eastern And Muslim Immigrants In Atlanta, Georgia, Tara Diana Prizito Apr 2009

The Spaces Of Encounter Of Female Middle Eastern And Muslim Immigrants In Atlanta, Georgia, Tara Diana Prizito

Geosciences Theses

This study analyzes identity, class, religiosity, and belonging as they affect the experiences of female Middle Eastern and Muslim immigrants in various spaces within the context of the Atlanta, Georgia area and draws attention to the ‘othering’ of immigrants in American society. The exploration of immigrants’ experiences in various spaces includes public and semi-public, employment, educational and organizational spaces. Interviews were conducted on 24 female immigrants in the Atlanta area who possess various backgrounds. While female immigrants who wear the hijab experienced more, and more direct, discrimination than those who wear Western styles, the women who wear hijab were not …

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Clay Mineralogy And Illite Crystallinity In The Late Devonian To Early Mississippian Woodford Shale In The Arbuckle Mountains, Oklahoma, Usa, Richard Allen Whittington Ii Apr 2009

Clay Mineralogy And Illite Crystallinity In The Late Devonian To Early Mississippian Woodford Shale In The Arbuckle Mountains, Oklahoma, Usa, Richard Allen Whittington Ii

Geosciences Theses

Commonly the thermal maturity of the Late Devonian to Early Mississippian Woodford shale found on the flanks of the Arbuckle Mountains of Oklahoma is determined by vitrinite reflectance, values ranging from 0.3-1.5%. Using phyllosilicate minerals, specifically diagenetic mixed layer illite/smectite and diagenetic illite, an understanding of the extent and processes leading to the thermal maturation may be developed. Analysis by XRD of the clay mineralogy of the Woodford shale found kaolinite and mixed layer illite/smectite with <5% smectite and R≥3 stacking order. Modeling of the Woodford shale also suggests the percentage of smectite present in mixed layer illite/smectite to be <5% and commonly <2.5%. Deconvolution of the illite (001) peak supports the low smectite content and high illite crystallinity. The long range ordered illite, R≥3, and high illite crystallinity values are indicative of diagenesis to anchizone conditions suggesting a higher thermal maturity relative to previously measured values of vitrinite reflectance.

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