Дисертації з теми "Geography, Geology, and the Environment"
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Dominy, Simon C. "The geology of the china clay deposits of Southwest England with particular reference to their chemical properties." Thesis, Kingston University, 1993. http://eprints.kingston.ac.uk/20351/.
Повний текст джерелаBjornson, Jean. "Les glissements rétrogressifs de fonte de la rivière Willow, Territoires du Nord-Ouest, Canada: Caractéristiques sédimentologiques, distribution spatiale et temporelle." Thesis, University of Ottawa (Canada), 2003. http://hdl.handle.net/10393/26444.
Повний текст джерелаArpin, Sarah Marie. "Karst Hydrogeology of the Haney Limestone, South-Central Kentucky." TopSCHOLAR®, 2013. http://digitalcommons.wku.edu/theses/1253.
Повний текст джерелаMoore, Amy M. "Spatiotemporal Analyses of Child Pedestrian-Vehicle Incidents Occurring during School-Commuting Hours in Metro Atlanta from 2000 to 2007." Digital Archive @ GSU, 2011. http://digitalarchive.gsu.edu/geosciences_theses/35.
Повний текст джерелаLevy, Beth Michele. "High-Resolution Seismic Stratigraphy of the Ganges-Brahmaputra River System: Subaqueous Deltaic Progradation on the Bengal Shelf." W&M ScholarWorks, 1995. https://scholarworks.wm.edu/etd/1539617696.
Повний текст джерелаLambert-Smith, J. S. "The geology, structure and metallogenesis of the world class Loulo-Bambadji Au district in Mali and Senegal, West Africa." Thesis, Kingston University, 2014. http://eprints.kingston.ac.uk/29998/.
Повний текст джерелаAzmi, Azrin. "Late Triassic to early Jurassic microfossils and palaeoenvironments of the Waterloo Mudstone Formation." Thesis, University of Birmingham, 2018. http://etheses.bham.ac.uk//id/eprint/8517/.
Повний текст джерелаJaweesh, Mahmoud. "Correlations between fluviatile sandstone lithofacies and geochemical properties and their importance for groundwater contaminant transport." Thesis, University of Birmingham, 2018. http://etheses.bham.ac.uk//id/eprint/8170/.
Повний текст джерелаOlivier, Bernard. "The geology and petrology of the Merelani tanzanite deposit, NE Tanzania." Thesis, Stellenbosch : University of Stellenbosch, 2006. http://hdl.handle.net/10019.1/1093.
Повний текст джерелаTanzanite, a blue/violet gemstone variety of zoisite (Ca2Al2O.AlOH[Si2O7][SiO4]) is only produced in NE Tanzania. The only known locality is an approximately 7km2 deposit in the Merelani area. It is one of the most sought after gemstones in the world with an industry sales value of between hundred and fifty and two hundred million dollars per year. At the current production rates and estimated resources the tanzanite deposit has a life expectancy of around 20 years. Despite the economical and scientific importance as well as the geological uniqueness of the deposit very little research has been conducted on the geology and petrology of the deposit and the characteristics of tanzanite. The primary aim of the research summarised in this dissertation was to gain an understanding of the geological conditions that led to the formation of this unique variety of zoisite. In order to achieve this, a variety of geological disciplines were addressed including the lithostratigraphic setting, the deformational history, the metamorphic history and conditions, the geochemical and isotopic composition, the mineral chemistry as well as the physical and optical properties of the tanzanite. Extensive field work was conducted over a seven year period, which included surface and underground mapping, surface trenching, surface and underground core drilling, structural measurements and an intensive sampling programme. Various analytical techniques were used in order to petrologically and mineralogically investigate both the deposit and tanzanite itself, including optical microscopy, XRF analyses, laser-ablation ICP-MS, quantitative chemical analyses by means of the electron microprobe, XRD analyses, back-scattered electron microscopy, isotope analyses, fluid-inclusion studies, Vis/UV/NIR spectroscopy, IR spectroscopy, and EPR studies. This study revealed an intricate and complex geological history for the formation of tanzanite. The deposition of carbon-rich layers, formed during the development of a sequence of shallow shelf sediments consisting primarily of various organic carbon (δ13C between –22,85 ‰ and –26,74 ‰) -rich mudstone horizons and limestone beds is seen as the first phase of the mineralisation process. These Archaean sediments were deposited in a back- or fore-arc spreading basin. The organic carbon-rich mudstone layers acted as the first phase of vanadium accumulation in the stratigraphic sequence, and are intercalated with a material with a volcanic origin (metabasites), which most likely contributed to the enrichment of amongst others V. Early diagenetic processes were followed by an extended metamorphic and deformation (D1) history, reaching upper granulite facies conditions (10 – 12 kbar and 850 oC to 1000 oC) at ca. 1000 Ma. The high-grade metamorphic history was followed by multiphase retrograde deformation events (D2 and D3) that developed as a result of crustal uplift. The D2 event probably occurred between 850 and 600 Ma at P-T conditions estimated at between 8 to 7 kbar and 700 to 650 oC. A third stage of deformation (D3) resulted in the formation of overprinting structures and occurred during the later stages of the Pan-African (550 – 500Ma) event during amphibolite/greenschist facies conditions (7 to 6 kbar and 600 to 520 oC). The deformational history of the deposit played a critical role in the mineralisation processes. Of the four main deformation events identified, three played a critical role in the mineralisation process. The first event led to the development of early structural features as defined by F1, S1 and L1. This was followed by a multiphase D2 event consisting of three different orders of folding (F2a, F2b and F2c) and the formation of boudinage. The association between tanzanite and boudins as well as the stacking and multiple duplication of the boudinaged ore-zone through isoclinal folding resulted in multiple “ore-shoots”. These ore-shoots follow the plunge of the F2c fold closures and results in mine-able features within the ore-body. The third deformation event led to complex structural overprinting of the earlier fabric as observed in S3 and L3 and resulted in the deformation of the F2 structures through crosscutting F3 folds. Calc-silicate layers developed in the stratigraphic sequence as a result of metamorphic and metasomatic interaction between calcium enriched (boudinaged calc-silicates) and depleted horizons (graphitic gneisses) during a skarn-forming episode. V-rich green grossular garnet (tsavorite) crystallised in tension zones within and in proximity to the boudins during prograde metamorphism. Tanzanite mineralisation occurred during the retrograde stages at ca. 585 ± 28 Ma with P-T conditions estimated at ca. 5 to 6 kbar and 650 ± 50 oC. Two distinctive tanzanite-forming processes are distinguished. The first involves the formation of tanzanite as a result of retrograde reaction of grossular garnet. The second process involves the migration of V and Ca -enriched fluids along brittle shear zones to tension sites where fluids reacted with wall rock during a drop in P-T conditions to precipitate tanzanite. Fluid inclusion and stable-isotope studies concluded that the ore-forming fluids were derived from the dehydration of the metasedimentary sequence and consisted of a mixture of H2O, CH4, H2S and N2. Mineralogical investigation of tanzanite indicated that trace concentrations of vanadium within its crystals structure causes its blue / violet colour. It was proved that the vanadium originated from the abundant organically derived graphite within the deposit. Spectroscopic and EPR analyses revealed the importance of the Ti4+ / Ti3+ ratio within the crystal structure of tanzanite with regard to its colour characteristics. The heating of tanzanite results in a couple valence exchange reaction Ti 3+ + V 4+ → Ti 4+ + V 3+ which causes an increase the blue / violet colour of tanzanite. The research conducted led to the development of a successful geological model for the tanzanite mining and treatment activities in the Merelani area of NE Tanzania. As such the research contributed to the establishment of a successful tanzanite mine, based on sound geological principles, which may act as a role model for other gemstone mines worldwide.
Miles, Luke G. "Global Digital Elevation Model Accuracy Assessment in the Himalaya, Nepal." TopSCHOLAR®, 2013. http://digitalcommons.wku.edu/theses/1313.
Повний текст джерелаSchannwell, Clemens. "Modelling ice dynamic sea-level rise from the Antarctic Peninsula Ice Sheet." Thesis, University of Birmingham, 2017. http://etheses.bham.ac.uk//id/eprint/7775/.
Повний текст джерелаSingleton, Andrew G. "Analysing landslides in the Three Gorges Region (China) using frequently acquired SAR images." Thesis, University of Glasgow, 2014. http://theses.gla.ac.uk/5676/.
Повний текст джерелаPortenga, Eric W. "Assessments of human land use, erosion, and sediment deposition in the Southeastern Australian Tablelands." Thesis, University of Glasgow, 2015. http://theses.gla.ac.uk/6319/.
Повний текст джерелаSpahr, Paul Nathan. "Using Geovisualizations and GIS to Present Spatial-Temporal Water Withdrawals for Ohio and the Conterminous United States." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1210894900.
Повний текст джерелаMathers, Hannah. "The impact of the Minch palaeo-ice stream in NW Scotland : constraining glacial erosion and landscape evolution through geomorphology and cosmogenic nuclide analysis." Thesis, University of Glasgow, 2014. http://theses.gla.ac.uk/5302/.
Повний текст джерелаBogren, Fredrik. "Evidence for birch forests and a highly productive environment near the margin of the Fennoscandian ice sheet in the Värriötunturit area, northeastern Finland." Thesis, Stockholms universitet, Institutionen för naturgeografi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-170716.
Повний текст джерелаTennessee, State of. "Washington County Geographic Features." Digital Commons @ East Tennessee State University, 1986. https://dc.etsu.edu/rare-maps/8.
Повний текст джерелаhttps://dc.etsu.edu/rare-maps/1007/thumbnail.jpg
Kaletsky, Kelly. "Measurement of the Effects of Food Preparation Activities on the Microclimate of the Snowball Dining Room Area of Mammoth Cave." TopSCHOLAR®, 1992. http://digitalcommons.wku.edu/theses/1734.
Повний текст джерелаKovarik, Johanna L. "A Composite Spatial Model Incorporating Groundwater Vulnerability and Environmental Disturbance to Guide Land Management." Scholar Commons, 2015. http://scholarcommons.usf.edu/etd/5863.
Повний текст джерелаThompson, James Kyle. "Station Exposure and Resulting Bias in Temperature Observations: A Comparison of he Kentucky Mesonet and ASOS Data." TopSCHOLAR®, 2014. http://digitalcommons.wku.edu/theses/1434.
Повний текст джерелаSchillereff, Daniel. "Lake sediment records of flood frequency and magnitude." Thesis, University of Liverpool, 2015. http://livrepository.liverpool.ac.uk/2007561/.
Повний текст джерелаHutchison, Sean Taylor. "Eastern Deciduous Forest Phenology and Vegetative Vigor Trends From 2000 to 2013, Mammoth Cave National Park, KY." TopSCHOLAR®, 2013. http://digitalcommons.wku.edu/theses/1312.
Повний текст джерелаBroome, John D. "Simulation Modeling of Karst Aquifer Conduit Evolution and Relations to Climate." TopSCHOLAR®, 2008. http://digitalcommons.wku.edu/theses/36.
Повний текст джерелаSteyn, Rochelle. "Modelling the architecture of distal sand-rich lobe deposits : an example from Fan 2, Skoorsteenberg Formation, Tanqua Karoo, South Africa." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/2608.
Повний текст джерелаThesis (MSc (Earth Sciences))—University of Stellenbosch, 2009.
Fan 2, one of five submarine fan systems of the Tanqua fan complex in the south-western Karoo Basin, South Africa, is subdivided into Lower, Middle and Upper units. Here, detailed analysis of the internal architecture and distribution of lithofacies associations of Middle Fan 2 facilitated the 3-D visualisation of the sedimentological and stratigraphical changes towards the pinch-out. Middle Fan 2 is interpreted to be a lower-fan, sand-rich terminal lobe, comprising three sandstone-lobe elements, separated by two siltstone interlobe elements. It is fed by a distributary channel that is hypothetically positioned to the west-southwest of the study area. The sandstone-lobe elements pinch out downdip to the north-east and updip to the southsouthwest in the study area. The consecutive pinch out of lobe elements to the north-east indicates a progradational stacking pattern similar to the entire lobe complex. Palaeocurrent analysis and the interpretation of isopach maps indicate that the transport direction of Middle Fan 2 was in a north-easterly direction. The fringes of the lobe and the distribution of internal elements (channels, amalgamated sheets and sheets) show a finger-like geometry in plan-view, in contrast to simple radial-lobe bodies that are commonly envisaged.
Johnson, Crystal. "Using Kriging, Cokriging, and GIS to Visualize Fe and Mn in Groundwater." Digital Commons @ East Tennessee State University, 2015. https://dc.etsu.edu/etd/2498.
Повний текст джерелаAly, Husein, and Gur Singh. "Värmesystem." Thesis, KTH, Byggvetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-173954.
Повний текст джерелаThis rapport is about evaluating four different heating systems. These systems are first, each system is described, how it works and then pros and cons with each system. Choosing the right heating system is different for different buildings since they all have different conditions. In the discussion these four systems are compared to each other considering all these conditions. The Conditions examined can be found in the beginning of the report.
Hall, Veronica. "Addressing Water Resource Issues In Barbados Through An Isotopic and Atmospheric Characterization of Precipitation Variability." TopSCHOLAR®, 2014. http://digitalcommons.wku.edu/theses/1356.
Повний текст джерелаKehrwald, Natalie Marie. "Low-latitude Ice Cores and Freshwater Availability." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1245169721.
Повний текст джерелаDean, David James. "A River Transformed: Historic Geomorphic Changes of the Lower Rio Grande in the Big Bend Region of Texas, Chihuahua, and Coahuila." DigitalCommons@USU, 2009. https://digitalcommons.usu.edu/etd/378.
Повний текст джерелаSteinberg, Rebecca M. "Predicting Post-Mining Hydrologic Effects of Underground Coal Mines in Ohio throughMultivariate Statistical Analyses and GIS Tool Building." Ohio University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1555429886192267.
Повний текст джерелаWebster, James William. "Radon Contamination of Residences in a City Built Upon a Karst Landscape Bowling Green, Warren County, Kentucky." TopSCHOLAR®, 1990. http://digitalcommons.wku.edu/theses/1682.
Повний текст джерелаWilder, Jason. "Modeling malaria transmission risk using satellite-based remote sensing imagery a five-year data analysis in Democratic People's Republic of Korea : a thesis presented to the Department of Geology and Geography in candidacy for the degree of master of science /." Diss., Maryville, Mo. : Northwest Missouri State University, 2007. http://www.nwmissouri.edu/library/theses/WilderJason/index.htm.
Повний текст джерелаThe full text of the thesis is included in the pdf file. Title from title screen of full text.pdf file (viewed on January 25, 2008) Includes bibliographical references.
Conley, Gary D. "Examining the Cover and Composition of the Successional Vegetation Mosaic of Pre-SMCRA Mined Landscapes in Southeast Ohio." Ohio University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1357751096.
Повний текст джерелаSalyer, Melanie. "An evaluation of the economic and environmental impacts of coal mining Flat Gap, Pound, Wise County, Virginia, as case study : a thesis presented to the Department of Geology and Geography in candidacy for the degree of Master of Science /." Diss., Maryville, Mo. : Northwest Missouri State University, 2006. http://www.nwmissouri.edu/library/theses/SalyerMelanie/index.htm.
Повний текст джерелаThe full text of the thesis is included in the pdf file. Title from title screen of full text.pdf file (viewed on January 25, 2008) Includes bibliographical references.
Nedvidek, Daniel C. "Evaluating the Effectiveness of Regulatory Stormwater Monitoring Protocols on Groundwater Quality in Urbanized Karst Regions." TopSCHOLAR®, 2014. http://digitalcommons.wku.edu/theses/1407.
Повний текст джерелаBaca, Kira J. "Environmental Impacts on the Development and Dune Activity of Oxbow Lake along the Southwest Coast of Lake Michigan at Saugatuck, Michigan USA." University of Toledo / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1365161018.
Повний текст джерелаRussell, Jr Scot Allan. "Analysis of Fresh Water Resources at the Line Hole Well Field, San Salvador Island, the Bahamas." TopSCHOLAR®, 2010. http://digitalcommons.wku.edu/theses/164.
Повний текст джерелаErasmus, Lelandi. "Virtual reconstruction of stratigraphy and past landscapes in the West Coast Fossil Park region." Thesis, Link to the online version, 2005. http://hdl.handle.net/10019/1640.
Повний текст джерелаAble, Anthony. "Karstification of the Pennyroyal Plain Behind the Retreating Chester Escarpment: Warren, Simpson & Logan Counties, Kentucky." TopSCHOLAR®, 1986. http://digitalcommons.wku.edu/theses/1211.
Повний текст джерелаPollack, Gerald D. "Timing and Characterization of the Change in the Redox State of Uranium in Precambrian Surface Environments: A Proxy for the Oxidation State of the Atmosphere." unrestricted, 2008. http://etd.gsu.edu/theses/available/etd-12052008-125923/.
Повний текст джерелаTitle from file title page. Eirik J. Krogstad, committee chair; Andrey Bekker, committee co-chair; W. Crawford Elliott, Timothy E. LaTour, committee members. Description based on contents viewed Aug. 27, 2009. Includes bibliographical references (p. 207-219).
Wikel, Geoffrey L. "Variability in Geologic Framework and Shoreline Change: Assateague and Wallops Islands, Eastern Shore of Virginia." W&M ScholarWorks, 2008. https://scholarworks.wm.edu/etd/1539617877.
Повний текст джерелаLyles, Frank. "Climate Change Adaptation for Southern California Groundwater Managers: A Case Study of the Six Basins Aquifer." Scholarship @ Claremont, 2017. http://scholarship.claremont.edu/pomona_theses/172.
Повний текст джерелаNordlund, Christer. "Det upphöjda landet : vetenskapen, landhöjningsfrågan och kartläggningen av Sveriges förflutna, 1860-1930." Doctoral thesis, Umeå universitet, Historiska studier, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-56808.
Повний текст джерелаdigitalisering@umu
Heyman, Jakob. "Glacial geology of Bayan Har Shan, northeastern Tibetan Plateau." Licentiate thesis, Stockholm University, Department of Physical Geography and Quaternary Geology, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-7507.
Повний текст джерелаThe paleoglaciology of the Tibetan Plateau is still largely unexplored, despite its importance for regional and global climate reconstructions. In this thesis a comprehensive glacial geological record is presented from an extensive part of the northeastern Tibetan Plateau centred on the Bayan Har Shan. Glacial reconstructions for this region range from restricted mountain glaciers through the intermediate-size regional-scale Huang He ice sheet to a plateau-scale Tibetan ice sheet. To provide a robust basis for glacial reconstructions, this thesis provides conclusions based on two principle methods, remote sensing and field studies. The remote sensing of a 90 m resolution digital elevation model and 15- and 30 m resolution satellite imagery renders a detailed data set with complete spatial coverage of large- and medium-scale glacial landforms, and large-scale plateau geomorphology. Observations from fieldwork campaigns add detailed point information for the distribution of glacial deposits. Geomorphological glacial traces such as glacial valleys, glacial lineations, marginal moraines, meltwater channels, and hummocky terrain occur frequently in elevated mountain areas, indicating former alpine-style glaciations. Glacial deposits in the form of till, erratic boulders, and glaciofluvial sediments are common in areas with mapped glacial landforms, but also beyond, in areas lacking large-scale glacial landforms. For extensive plateau areas in-between formerly glaciated mountain blocks, there is a striking absence of glacial landforms and sediments, indicating that these areas, perhaps, never were ice covered. Interestingly, glacial deposits occur further away from the mountain blocks than the large- and medium-scale glacial landforms, indicating insignificant erosion beneath the maximum ice covers close to their margins.
The large-scale geomorphology of the northeastern Tibetan Plateau is characterised by a low-relief plateau surface with glacial valleys in elevated mountain blocks and marginal steep V-shaped valleys. This geographical distribution indicates a dominance of glacial erosion in the elevated mountain areas and a dominance of fluvial erosion along the steep plateau margins, dissecting a relict plateau surface. The outline of the relict plateau surface mimics the proposed outline of the Huang He ice sheet, suggesting that the inferred ice sheet may represent a misinterpreted relict surface with scattered glacial traces.
In conclusion, the glacial geology examined in the Bayan Har Shan region is consistent with paleo-glaciers of varying extent restricted to elevated mountain areas. Even though extensive icefields/ice caps were centred on discrete mountain areas, there is no indication that these ice masses merged but rather that they were separated from each other by unglaciated plateau areas. The presented glacial geological record will be used in further studies towards a robust paleoglaciological reconstruction for the northeastern Tibetan Plateau.
Link, Adam John. "Identifying Potential Patterns of Wildfires in California in Relation to Soil Moisture using Remote Sensing." Bowling Green State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu158646328387007.
Повний текст джерелаKemp, Matthew L. "Characterizing the Depositional History of Three Ponds, Bath Nature Preserve, Bath, Ohio." University of Akron / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=akron1270834695.
Повний текст джерелаVan, Brabant Reid. "Lacustrine sediment records of debris flow activity, northwestern British Columbia and southwestern Yukon Territory." Thesis, University of Ottawa (Canada), 2004. http://hdl.handle.net/10393/26791.
Повний текст джерелаBarrett, Kelly A. "Identifying Building Sites in Summit County, Colorado: Geography, Geology, and GIS." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1238024467.
Повний текст джерелаPachos, Alexander. "An Empirical Study of Cave Passage Dimensions Using Augmented Radial and Longitudinal Survey Data." University of Akron / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=akron1221760340.
Повний текст джерелаBasagic, Hassan J. "Quantifying Twentieth Century Glacier Change in the Sierra Nevada, California." PDXScholar, 2008. https://pdxscholar.library.pdx.edu/open_access_etds/2239.
Повний текст джерела