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Browsing Geology by Type "Dissertation"
Now showing items 1-20 of 139
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A three-dimensional model for the Leeuwpoort tin mine and its application to exploration prediction (University of Pretoria, 2017)Due to tighter financial margins, the need for better knowledge of grade data is required. Geological models allow the user to have a better understanding of the geological environment in which mining is taking place. Three ...
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(University of Pretoria, 1976)Nunataks within an area of approximately 3 400 km2 between latitudes 71°50' and 72°35' south and longitudes 1°30' and 4°00' west were mapped geologically by the 12th South African National Antarctic Expedition during ...
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(University of Pretoria, 2018)Most present cemeteries were sited without any consideration of the potential risks they may have to the local environment and community. The metals used in coffin-making may gradually weaken into harmful contaminants. ...
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(University of Pretoria, 2008-07-08)The Impala Platinum Mines are located in the western limb of the Bushveld Complex. The economic platinum mineralization which is currently being mined at Impala Platinum occurs in the Merensky and the Upper Group 2 (UG2) ...
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Back-analysis and design review of a failed slope at an open-pit coal mine, Mpumalanga, South Africa (University of Pretoria, 2012-08-03)Mining activity in open-pit mines may change material properties over time and as a result, shear strengths are reduced and may lead to slope failures. It is therefore important to design slope geometries with an acceptable ...
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(University of Pretoria, 2015)Opencast mining has been and continues to be a favoured method for the extraction of the vast coal reserves in the Highveld of South Africa. Previously backfilled and restored open cast areas are generally zoned for ...
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(University of Pretoria, 2007-08-21)Brick clay deposits, in the area north of Cape Town, were formed as a result of three independent geological processes. The intrusion of the syn- to post tectonic granitoids into micaceous (indicated by the absence of ...
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(University of Pretoria, 2003)A-1 Jet fuel leaked into the environment through a pipeline near Movements 2 in Louis Trichardt Air Force Base. The duration of fuel spillage continued for approximately 15 years resulting in a free phase pollution plume ...
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(University of Pretoria, 2017)A research project was undertaken to delineate aquifers in Beaufort West. Recent studies in the Karoo Basin utilised geochemistry indicators to differentiate between shallow and deep groundwater. The shale gas exploration ...
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(University of Pretoria, 2008)This dissertation collates all available data from the Department of Water Affairs and Forestry’s (DWAF’s) National Groundwater Database (NGDB), DWAF’s Groundwater Resource Information Project (GRIP) and tests conducted ...
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(University of Pretoria, 2011)The Bushveld Igneous Complex (BIC) of South Africa hosts approximately 80 percent of the world economic resources of platinum group elements (PGE). Platinum group elements in the Upper Group 2 (UG-2) chromitite layer of ...
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(University of Pretoria, 2013)The approximately 2.9 Ga old Witwatersrand Basin of South Africa hosts different types of pyrite grains. The pyrite grains are hosted in different quartz pebble conglomerate reefs including the Ventersdorp Contact Reef ...
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(University of Pretoria, 2016)Gem garnet chemistry is described using the end-members pyrope, almandine, spessartine, andradite, grossular, and uvarovite. The large variation in garnets makes classification difficult. Garnet gemstones are typically ...
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(University of Pretoria, 2017)With an estimated erupted volume of 300,000 km3 and an areal extent of more than 200,000 km2, the Paleoproterozoic (2.06 Ga) silicic volcanic rocks of the Rooiberg Group (Kaapvaal Craton) in northern South Africa forms ...
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(University of Pretoria, 1989)From available records and data of colliery product samples, an area within the Witbank and Highveld coalfields was selected for this study. The petrographic and elemental nature of the coal seams have been derived from ...
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(University of Pretoria, 2013)The collapse of residual Archaen granitic soils in South Africa is a geotechnical hazard that was identified in the 1950’s. Collapse has led to hazardous building conditions in the rapidly expanding northern parts of ...
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(University of Pretoria, 2014)The MRS/MISS of the Makgabeng Formation encompasses sand cracks, wrinkle marks, mat fragments, mat chips and roll-ups and those of the Magaliesberg formation are wrinkle marks, petees/petee ridges, sand cracks, and ...
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(University of Pretoria, 2012-07-16)Rock density is critical for determining the tonnage of an orebody and therefore impacts on the total resource of a deposit. Density is defined as the concentration of matter, and is expressed as mass per unit volume (g/cc; ...
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(University of Pretoria, 2021)The sedimentary rocks of the Karoo Supergroup cover approximately 75% of the surface area of South Africa. Major projects have been constructed on and in these rocks with a number of tunnelling projects such as the Lesotho ...
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(University of Pretoria, 2013-05-24)Euhedral clinopyroxene mega-crystals have been retrieved from Marion Island, a volcanic island situated on an inactive transform fault near the mid oceanic ridge on Antarctic tectonic plate and part of the Prince Edward ...
Now showing items 1-20 of 139