Doctoral Degrees (Earth Sciences)
Recent Submissions
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Southern African dust characteristics and potential impacts on the surrounding oceans
(Stellenbosch : Stellenbosch University, 2021-12)ENGLISH ABSTRACT: This study supports understanding the potential impact of dust aerosols from southern Africa have on the proximal ocean ecosystems. Dust can release essential nutrients and thus fertilize the ocean, ... -
An investigation of archean and paleoproterozoic metamorphic processes in the Limpopo belt via detailed analysis of reaction textures in metapelites from the Bandelierkop Formation, Southern Marginal Zone of the Limpopo belt
(Stellenbosch : Stellenbosch University, 2021-12)ENGLISH ABSTRACT: The well exposed granulite facies rocks in the Southern Marginal Zone (SMZ) of the Limpopo Belt (LB), South Africa, represent an exceptional window into the lower crust where partial melting ... -
Isotopic and elemental ratios to assess the relationship between heuweltjies and saline groundwater in the Northern Cape of South Africa.
(Stellenbosch : Stellenbosch University, 2021-12)ENGLISH ABSTRACT: Globally, groundwater is becoming one of the most important resources. This is specifically the case in semi-arid to arid southern Africa where surface water resources are limited. In the Buffels River ... -
Investigating regional recharge dynamics through the use of tritium and radiocarbon isotopes to assess the hydrological resilience of groundwater in southern Africa
(Stellenbosch : Stellenbosch University, 2021-03)ENGLISH ABSTRACT: Water resources are integral in the global pursuit of equitable growth and sustainability. Although groundwater is the most abundant freshwater resource accessible to humans and the environment, it is ... -
Gold mineralization in the Amani area, southwestern Tanzania
(Stellenbosch : Stellenbosch University, 2021-03)ENGLISH ABSTRACT: Amani area is located in the Njombe Region of southwestern Tanzania, approximately 40 km east of Lake Malawi, and is geologically situated within the Upangwa terrane of the poly-orogenic Ubendian Belt. ... -
Gold mineralisation in the Kirk Range area, southern Malawi
(Stellenbosch : Stellenbosch University, 2020-12)ENGLISH ABSTRACT: This study aims at understanding the characteristics and controls of gold mineralisation in the Kirk Range area, southern Malawi. Malawi’s mineral inventory is not known, particularly this is attributed ... -
On the distribution and biogeochemical cycling of bioactive trace metals in the Southern Ocean
(Stellenbosch : Stellenbosch University, 2020-12)ENGLISH ABSTRACT: Bioactive trace metals, including copper (Cu), zinc (Zn), nickel (Ni) and cadmium (Cd), are essential micronutrients to marine phytoplankton and their availability in the surface ocean has been shown ... -
Developing protocols for XCT scanning of dense mineral ore samples with applications to geology and minerals processing
(Stellenbosch : Stellenbosch University, 2020-04)ENGLISH ABSTRACT: X-ray computed tomography (XCT) is a non-destructive technique capable of producing 3Dmineralogical and textural information from drill cores. The discrimination between mineralogical information of the ... -
Geometry and emplacement controls of dolerite sill complexes in the Karoo basin
(Stellenbosch : Stellenbosch University, 2020-04)ENGLISH ABSTRACT: This dissertation is a compilation of three case studies that integrates drilling, field and geophysical data on dolerite sill complexes across the Karoo basin to constrain the emplacement processes, ... -
Modern-ocean ground-truthing of planktic foraminifer nitrogen isotopes : a proxy for surface ocean nutrient conditions
(Stellenbosch : Stellenbosch University, 2020-04)ENGLISH ABSTRACT: The nitrogen (N) isotope ratios (δ15N) of organic matter trapped within the fossil shells of planktic foraminifera, upper-ocean dwelling zooplankton, are providing a new lens through which to examine the ... -
Using distributive surface water and groundwater modelling techniques to quantify groundwater recharge and baseflow for the Verlorenvlei estuarine system, west coast, South Africa.
(Stellenbosch : Stellenbosch University, 2018-12)ENGLISH ABSTRACT: For effective management of groundwater resources, recharge rates and baseflow volumes need to be quantified to determine sustainable abstraction regimes and to quantify the ecological reserve, the amount ... -
Genesis and evolution of a Neoproterozoic magmatic arc: the cordilleran-type granitoids of the Araçuaí Belt, Brazil.
(Stellenbosch : Stellenbosch University, 2018-12)ENGLISH ABSTRACT: The Araçuaí orogen (SE Brazil) is one of the largest (350,000 km2) and long-lived (ca. 630 – 480 Ma) granitic province in the world. Its wide variety of granitoids recording mid- to lower crustal P - T ... -
Evolution of the continental crust and significance of the zircon record, a case study from the French Massif Central.
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: The formation of the continental crust is a major consequence of Earth di erentiation. Recent advances on this topic bene ted from improvements of analytical techniques enabling in situ measurements of ... -
Geological setting and evolution of the Omitiomire Cu deposit in the Southern Zone accretionary prism of the Damara Belt, Namibia
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: Shear Zone hosted Cu mineralisation in the Deep Level Southern Zone accretionary prism of the Damara Belt is associated with deformation and fluid flow related to the exhumation of the Mesoproterozoic ... -
Differentiation and stabilisation of the Archean continental crust, the example of the northern edge of the Kaapvaal craton, South Africa
(Stellenbosch : Stellenbosch University, 2017-03)ENGLISH ABSTRACT: The Earth is one of the only solid celestial bodies displaying, at present day, an internal activity significant enough to modify its surface. This activity is mostly pictured by plate tectonic motions, ... -
Repeated partial melting events in the polymetamorphic Carlos Chagas batholith : implications for the tectono-metamorphic evolution of the Araçuaí orogen (southeastern Brazil)
(Stellenbosch : Stellenbosch University, 2017-03)ENGLISH ABSTRACT: The Araçuaí orogen (AO), located in the southeastern Brazil, and its African counterpart, the West Congo belt, is part of the Pan-African-Brasiliano orogenic system developed between the Congo and São ... -
The effect of winery wastewater irrigation on the properties of selected soils from the South African wine region
(Stellenbosch : Stellenbosch University, 2016-12)ENGLISH ABSTRACT: Due to an increase in wine production as well as an intensification of environmental legislation in South Africa, the need for guidelines for sustainable management of winery wastewater has increased. To ... -
Geology, structural evolution and controls of hydrothermal gold mineralization in the Eastern Karagwe-Ankole fold belt, North Western Tanzania
(Stellenbosch : Stellenbosch University, 2016-03)ENGLISH ABSTRACT: In central-east Africa, the north-western margin of the Archaean Tanzania Craton (TC) is overlain by imbricated, low grade, volcano-sedimentary rocks of the Karagwe-Ankole belt’s (KAB) Eastern Domain (ED). ... -
Bulk geochemical, biomarker and leaf wax isotope records of Mfabeni peatland, KwaZulu Natal, South Africa since the late Pleistocene
(Stellenbosch : Stellenbosch University, 2016-03)ENGLISH ABSTRACT: Southern Africa is a topographically diverse region that is influenced by temperate, sub-tropical and tropical climates encompassing varying rainfall zones. The core regional contemporary climatic drivers ... -
The processes of melt segregation, magma ascent and pluton emplacement in the continental crust of the Damara Belt, Namibia
(Stellenbosch : Stellenbosch University, 2016-03)ENGLISH ABSTRACT: Theoretical models of meso- and macroscale granitic melt/magma transport commonly invoke a prominent role for dilatant fracturing of the wall rocks, but supporting field evidence is in many cases only ...
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