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MSc Students

Postgraduate Students - MSc Students

MSc Students at the Department of Earth Sciences


Emmanuel Nfor Nformi

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Supervisor: Prof Paul Carey

Research Interest: Sequence Stratigraphy/ Deep water reservoirs.

MSc Research Title: Sequence stratigraphic characterisation of petroleum reservoirs in block 11b/12b, deepwater Southern Outeniqua Basin, South Africa.

Brief Research Description

This research consists of using standard sequence stratigraphy techniques, including amongst others (seismic analysis/interpretation, cores, and logs) and the Wheeler diagram, lithology constrains and time relationships between basin margin (Pletmos Basin) and basin axis (Southern Outeniqua basin) depositional packages is established.


Bulelwa Ngwexana

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Supervisor: Dr. Jaqueline Goldin

Research Interest:

MSc Research Title: A cross sectoral examination of HIV/AIDS institutions for the purpose of informing local level water sector organisations.

Laudika Halueendo 

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Supervisor: Dr. Jaqueline Goldin

Research Interest:

MSc Research Title: Women adequacy for succesful implementation of rainwater harvesting: Two village case studies in Ehlanzeni District, Mpumalanga.


Ndoh Bella Germaine Owen 

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Supervisor: Dr. Jaqueline Goldin

Research Interest:

MSc Research Title: Assessing the relationship between youth capabilities and food security: a case study of the rainwater harvesting project in Luphisi and Dwaleni in the Ehlanzeni Municipality in Mpumalanga Province.


Marcelene Janeen Andrews 

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Supervisor: Prof. Charles Okujeni

Research Interest:

MSc Research Title:


Melissa Harriet Crowley   

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Supervisor: Prof. Charles Okujeni

Research Interest: Exploration geochemistry

MSc Research Title: The optimization and application of vapour geochemistry in the exploration of concealed base metal deposits 

Summary of research

The premise of the study involves the use of various analytical techniques to unearth certain difficulties that are encountered during the exploration of a possible concealed base metal deposit in the Elimhof farm, Griquatown (South Africa). These techniques specifically include whole rock geochemical analysis using X-ray Fluorescence (XRF) Spectrometry; selective extraction using Graphite Furnace-Atomic Absorption Spectrometry (GF-AAS); and Vapour geochemistry using Cold Vapour Atomic Absorption Spectrometry (CV-AAS) as well as Hydride Generation Atomic Absorption Spectrometry (HG-AAS).

 

The samples provided are mainly comprised of weathered carbonate believed to be derived from the dolomite host rock and Aeolian transported regolith. The XRF-spectrometry provides a means for distinguishing and interpreting the chemical composition of the samples. The high carbonate content and therefore high pH of the substrate could result in a subdued geochemical signature of the main commodities. The selective and vapour geochemistry techniques are thus incorporated. Ammonium acetate as a leachant allows for exchangeable and adsorbed metals as well as those co-precipitated by carbonates, to be extracted. The high mobility of vapour, for instance mercury (Hg) has been favoured in geochemical exploration as it is less inhibited by environmental conditions compared to other elements. However, due to mercury’s various elemental states, the conditions for the CV-AAS technique must be optimized by parameters such as weight of sample, volume of reagent and pyrolysis temperature of the various mercury phases.  This is required in order to identify the mercury phase most likely to represent dispersion haloes related to the orebody.

 

The main objectives of the study are therefore to 1) Determine the chemical composition of the samples, 2) incorporate vapour and selective extraction techniques to overcome environmental conditions and thus determine element patterns associated with the orebody.

 


Zainab Mowzer  

Supervisor:

Email:

Research Interest:

MSc Research Title:


Xavier Schalkwyk  

Email:  

  Supervisor:  Prof. Paul Carey

Research Interest:

MSc Research Title: Characterizing depositional environments of the Lower Ecca and Beaufort formations through geochemical analysis in the Karoo, South Africa

ABSTRACT

The main aim of this research is to characterize concretions in the Lower Ecca to concretions found in the fluvial environment of the Beaufort formation. From these the depositional environments will be established across the transition from delta top to alluvial plain since the overlaying Beaufort group is highly diachronous. This will be done by 1) Thin Section Petrography, 2) X – Ray Diffraction [XRD], 3) Scanning Electron Microscope [SEM] & 4) Inductively Coupled Plasma mass spectrometry [ICP].

In total 20 samples will be collected from the two sites (Lower Ecca and Beaufort formation) i.e. 10 samples per site across the formation units. Samples for thin sections will be collected this will give identification on rock composition. For XRD analysis rock samples will be crushed (powder) and used to determine amorphous content of samples and sample concentrations. SEM analysis will be used to determine the mineralogy and textures of the different lithologic units (rock properties). ICP will also be used for analysis of trace elements and to quantify their concentrations.

In the end the main deliverables are to accurately conclude; How these two formations environments change over there units, Characterizing major elements, Relationship between depositional processes and Suggest palaeo-environmental evolution. From preliminary data it is known that the Lower Ecca ( Prince Albert formation) have organic matter but the abundance of organic matter might suggest that the burial increased the glacial melt water lake sediments during deposition.

KEYWORDS: Karoo Basin, Lower Ecca, Concretions
  


Cyrille Stephane Tsakou Sonwa

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   Supervisor: 

Research Interest:

MSc Research Title:


Mwenze Tshipeng

 Email:   

Supervisor: Prof. Charles Okujeni

Research Interest:

MSc Research Title:


Miles Clayton Van Eeden 

Email:    

Supervisor: 

Research Interest:

MSc Research Title:



 

 


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ABSTRACT

 

The main aim of this research is to characterize concretions in the Lower Ecca to concretions found in the fluvial environment of the Beaufort formation. From these the depositional environments will be established across the transition from delta top to alluvial plain since the overlaying Beaufort group is highly diachronous. This will be done by 1) Thin Section Petrography, 2) X – Ray Diffraction [XRD], 3) Scanning Electron Microscope [SEM] & 4) Inductively Coupled Plasma mass spectrometry [ICP].

 

In total 20 samples will be collected from the two sites (Lower Ecca and Beaufort formation) i.e. 10 samples per site across the formation units. Samples for thin sections will be collected this will give identification on rock composition. For XRD analysis rock samples will be crushed (powder) and used to determine amorphous content of samples and sample concentrations. SEM analysis will be used to determine the mineralogy and textures of the different lithologic units (rock properties). ICP will also be used for analysis of trace elements and to quantify their concentrations.

 

In the end the main deliverables are to accurately conclude; How these two formations environments change over there units, Characterizing major elements, Relationship between depositional processes and Suggest palaeo-environmental evolution. From preliminary data it is known that the Lower Ecca ( Prince Albert formation) have organic matter but the abundance of organic matter might suggest that the burial increased the glacial melt water lake sediments during deposition.

  

KEYWORDS: Karoo Basin, Lower Ecca, Concretions

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