Department of Earth Sciences
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Diminutive fleet-footed tyrannosauroid narrows the 70-million-year gap in the North American fossil record
(Springer Nature, 2019-02-21)To date, eco-evolutionary dynamics in the ascent of tyrannosauroids to top predator roles have been obscured by a 70-million-year gap in the North American (NA) record. Here we report discovery of the oldest Cretaceous NA ... -
Dissolved iron in the North Atlantic Ocean and Labrador Sea along the GEOVIDE section (GEOTRACES section GA01)
(2020-02-21)Dissolved Fe (DFe) samples from the GEOVIDE voyage (GEOTRACES GA01, May–June 2014) in the North Atlantic Ocean were analysed using a SeaFAST-picoTM coupled to an Element XR HR-ICP-MS and provided interesting insights on ... -
Mantle and crust interaction in post-collisional setting, a case study of lamprophyric-granitic composite dykes of northern Aigoual pluton, French Massif Central
(Stellenbosch : Stellenbosch University, 2022-04)ENGLISH ABSTRACT: Lamprophyre to granite composite dykes in the northern extremity of the post-Variscan Aigoual pluton, French Massif Central (FMC), offer an opportunity to study the complexity of the processes that ... -
Understanding Southern Ocean phytoplankton ecophysiological response to iron availability
(Stellenbosch : Stellenbosch University, 2022-04)ENGLISH ABSTRACT: Over the past century, climate change has been of growing concern, due to its ecological and economic global impact. The Southern Ocean buffers the impacts of climate change by accounting for a significant ... -
Application of 87Sr/86Sr ratios to discerning groundwaters from different lithostratigraphic units in the Southwest coastal region of South Africa
(Stellenbosch : Stellenbosch University, 2022-04)ENGLISH ABSTRACT: South Africa has been significantly affected by climate change and has experienced reoccurring drought conditions induced by low precipitation levels and resulting in declining surface freshwater levels. ... -
An investigation of magma mingling and potential magma mixing during the intrusion of mafic melts into metasediments undergoing partial melting in the Dalradian series of eastern Scotland
(Stellenbosch : Stellenbosch University, 2022-04)ENGLISH ABSTRACT: In order to understand the evolution and differentiation of the Earth, the petrogenesis of chemically evolved intermediate to felsic rocks which are characteristic of Earth’s continental crust, is of ... -
Microfossil characterisation for petroleum exploration using x-ray computed tomography: a new approach
(Stellenbosch : Stellenbosch University, 2022-04)ENGLISH ABSTRACT: The current bulk processing and identification of microfossils from drill cores for petroleum exploration are limited by time-consuming traditional chemical and physical microfossil extraction and ... -
Insights into early winter Southern Indian Ocean dissolved iron distributions and remineralisation using excess barium (GEOTRACES GIPr07 cruise)
(Stellenbosch : Stellenbosch University, 2022-04)ENGLISH ABSTRACT: The Southern Ocean is of central importance to the global ocean, connecting the Atlantic, Pacific and Indian basins via the Antarctic Circumpolar Current, which carries large amounts of heat, carbon and ... -
Die bergplase van Piketberg
(Stellenbosch : Stellenbosch University, 1957-12)AFRIKAANSE OPSOMMING: Voordat die geskiedenis van die berg nagegaan kan word, is dit nodig om 'n breër agtergrond te verkry, en veral te wys op die wyse waaarop Piketberg, sy naam gekry het. Die eerste bewoners van die ... -
Characterizing the fungurume 88 deposit in the tenke fungurume mining district: an unusual, high-grade, primary cobalt sulphide deposit
(Stellenbosch : Stellenbosch University, 2021-12)ENGLISH ABSTRACT: The Tenke Fungurume Mining (TFM) district, situated in the northern parts of the Central African Copperbelt (CACB), exhibits one of the most renowned clusters of sedimentary stratiform ... -
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, ... -
Potential impacts of climate change on groundwater recharge in South Africa using stable isotopes of water
(Stellenbosch : Stellenbosch University, 2021-12)ENGLISH ABSTRACT: Unimodal wet season precipitation plays a significant role in ensuring sustainable and continuous replenishment of groundwater resources, especially in arid to semi-arid climates that only ... -
Evaluating the application and limitations of element to mineral conversion to predict modal mineralogy: the development of a framework for its application
(Stellenbosch : Stellenbosch University, 2021-12)ENGLISH ABSTRACT: The quantification of modal mineralogy has become increasingly important in the modern mining industry due to active mines being forced into mining lower-grade and mineralogically more ... -
Using stable isotopes to understand relative contributions of evaporation and evapotranspiration on groundwater recharge in the Verlorenvlei catchment, west coast, South Africa
(Stellenbosch : Stellenbosch University, 2021-12)ENGLISH ABSTRACT: In Southern Africa, especially in arid and semi-arid regions, there has been an increase in dependency on groundwater resources for both domestic and agricultural supplies. This has been ... -
Controls of hydrothermal fluid flow and gold mineralization in the Sheba-Fairview Complex, Barberton Greenstone Belt, South Africa
(Stellenbosch : Stellenbosch University, 2021-12)ENGLISH ABSTRACT: The Barberton Greenstone Belt hosts high-grade gold-quartz-sulphide-carbonate orebodies where more than 350 ton of gold has been mined over 130 years. Some of the top gold-producing mines are located ... -
The distribution of dissolved molybdenum along the 30˚ E meridian (GEOTRACES Process Study (GIpr07)): First assessment of the factors affecting its behaviour in the African sector of the Southern Ocean
(Stellenbosch : Stellenbosch University, 2021-12)ENGLISH ABSTRACT: Molybdenum (Mo) is considered an essential micronutrient owing to its vital role as a cofactor of enzymes facilitating the nitrogen metabolism in phytoplankton. Owing to its unreactive nature in seawater, ... -
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 ... -
Processes of fault-controlled fluid-flow, alteration and gold mineralization at Sheba Mine, Barberton Greenstone Belt, South Africa
(Stellenbosch : Stellenbosch University, 2021-11-09)ENGLISH ABSTRACT: Gold mineralization at Sheba Mine, the highest producing mine of the Sheba-Fairview Complex (SFC) and the Barberton Greenstone Belt, is associated with distinct shear zones and faults hosted in distinct ... -
Regulation of the phytoplankton heme b iron pool during the North Atlantic spring bloom
(Frontiers Media, 2019-07-11)Heme b is an iron-containing co-factor in hemoproteins. Heme b concentrations are low (<1 pmol L⁻²) in iron limited phytoplankton in cultures and in the field. Here, we determined heme b in marine particulate material (>0.7 ... -
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 ...
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