Magister Scientiae - MSc (Earth Science)http://hdl.handle.net/11394/31062024-03-25T06:42:19Z2024-03-25T06:42:19ZAn evaluation of potential management options to Reduce water use in communal gardens on the cape FlatsKeet, JDhttp://hdl.handle.net/11394/106292024-01-27T00:01:08Z2011-01-01T00:00:00ZAn evaluation of potential management options to Reduce water use in communal gardens on the cape Flats
Keet, JD
The aim of this project was to evaluate various potential management options in their ability to reduce the water use of small and medium scale vegetable gardens on the Cape Flats. The water use of these gardens has a considerable impact on the economic feasibility of vegetable gardening. Considering the importance of the Cape Flats aquifer, it is also preferable from an environmental point of view to reduce water usage on the Cape Flats. The potential management options discussed in this report are: (1) reducing crop water requirements by using windbreaks and changing planting or sowing dates, (2) improving irrigation techniques
and (3) improving irrigation management practices.
Magister Artium - MA
2011-01-01T00:00:00ZA study of high-grade calc-silicate rocks in the Southern Bushmanland Domain, Namaqua Metamorphic province, including the garies wollastonite depositvan Wyk, Carmenlitehttp://hdl.handle.net/11394/104792023-08-12T00:01:41Z2023-01-01T00:00:00ZA study of high-grade calc-silicate rocks in the Southern Bushmanland Domain, Namaqua Metamorphic province, including the garies wollastonite deposit
van Wyk, Carmenlite
In the Namaqualand region, Northern Cape, South Africa, calc-silicate rocks are present in the highest-grade metamorphic zone (upper amphibolite to granulite facies) of the southern Bushmanland Domain, Namaqua Province. Minor amounts of calc-silicate rocks occur as small isolated discontinuous layers, pods and lenses in the investigated area just outside of Kliprand, while the Garies area exposes a larger occurrence of calc-silicate rocks which involves relatively pure concentrations of wollastonite that are presently mined. Both these sites are characterised by wollastonite-rich calc-silicate assemblages. The rocks from these areas provide a unique opportunity to study the physical conditions and fluid regime of granulite facies metamorphism in the Bushmanland Domain. Mineral chemistry and petrology of fifty calc-silicate samples from the Garies area were studied in detail, and twenty calc-silicate samples from the Kliprand area were studied for comparison to constrain the P-T conditions of granulite facies metamorphism and understand the characteristics of fluid compositions.
>Magister Scientiae - MSc
2023-01-01T00:00:00ZGeochemical and petrographic evidence for the vredefort proximal impact ejecta in the Northern Cape, South AfricaMautle, Dangerhttp://hdl.handle.net/11394/103912023-07-14T00:02:57Z2022-01-01T00:00:00ZGeochemical and petrographic evidence for the vredefort proximal impact ejecta in the Northern Cape, South Africa
Mautle, Danger
The advancement of the understanding of hypervelocity impacts lies in discovering impact structures and both proximal and distal impact ejecta. This study uses petrographic and geochemical techniques to investigate the occurrence of Vredefort proximal impact ejecta in the Paleoproterozoic Maremane Dome, South Africa. Anomalous spherical objects ca. 15 mm in apparent diameter have been observed near the top of the Doornfontein Conglomerate Member in the Maremane Dome, South Africa. The objects were previously described as pisolites formed by laterization. The Doornfontein Conglomerate Member was thought to be a conglomerate unit formed by erosion and karstification of the Maremane Dome during the tectonic uplift. However, these interpretations appear to not fully explain most observations in the Doornfontein Conglomerate Member and anomalous objects and are therefore a concern.
>Magister Scientiae - MSc
2022-01-01T00:00:00ZConstraining the stratigraphy and paleotectonic development of the Cango Caves and Kansa Groups (Western Cape, South Africa) using detrital zircon and whole-rock geochemistryWoolf, Keanan Alanhttp://hdl.handle.net/11394/103872023-07-14T00:03:04Z2022-01-01T00:00:00ZConstraining the stratigraphy and paleotectonic development of the Cango Caves and Kansa Groups (Western Cape, South Africa) using detrital zircon and whole-rock geochemistry
Woolf, Keanan Alan
The Saldania Belt is a Neoproterozoic to early Paleozoic low-grade orogenic belt that borders the southern and southwestern margins of the Kalahari Carton. It forms part of the Neoproterozoic Pan-African and Brasiliano tectonic belts in southern Africa and southeastern South America, related to the assembly of southwestern Gondwana. The Saldania Belt is composed of several inliers, one of which is the Kango Inlier. The Kango Inlier is an east-west orientated foreland basin consisting of several groups and formations. The Cango Caves Group forms the basal unit within the Kango Inlier, comprising of the Matjies River, Groenefontein and Huis Rivier formations. Using a combined study incorporating petrographic, geochemical, isotopic and U-Pb geochronological data, the Cango Caves Group is investigated to aid in deciphering the crustal evolution of the Kango Inlier.
>Magister Scientiae - MSc
2022-01-01T00:00:00Z