>Magister Scientiae - MSc / The study area Koekoeb B is a farm that falls under the Kakamas Terrane which in turn falls under the Gordonia Subprovince in the Namaqua-Natal Metamorphic Province, South Africa. This area was chosen due to lack in literature about its lithology. Koekoeb B is comprised of metasedimentary rocks of the Biesje Poort Subgroup and granitoids of the Keimoes Suite. The Kakamas Terrane was deposited in an intracratonic basin between the Kaapvaal Craton and the Namaqua continental mass. The sediments were buried with time and experienced metamorphism due to burial pressures and temperatures. The area experienced folding as a result of the collision of the newly formed Kakamas Terrane and the Bushmanland segment with the Kaapvaal Craton during a Wilson Cycle. During subduction and collision the metasedimentary rocks were intruded by what is known as the Keimoes Suite. The most abundant intrusive rock in Koekoeb B is the Friersdale Charnockite. It is considered the youngest with Rb-Sr ages around 1080-1090 Ma. The Gordonia Subprovince experienced such intense deformation that continuous folds formed and there is even evidence of parasitic folds. Northwest striking shear zones developed as a result of the continued compression of the Namaqua mass with the adjacent north easterly Kaapvaal Craton. The folds and shear zones formed under four major deformational events Two months were spent acquiring orientation data (direction of dip and dip) in the field. A Clar compass was used to measure the dip direction and dip readings of bedding, cleavage, joints and lineations. The orientation data was imported into Move® software to create a geological map. Samples collected from the field were used to produce thin sections for petrography studies using the petrographic microscope. Conclusions were drawn from the analysis of the data. Koekoeb B experienced regional metamorphism and folding when the Kakamas Terrane collided with the Kaapvaal Craton. The area was subdivided into four subareas based on the strike and dip data generated on the geological map. The synoptic β-axis diagram determined that the subareas are of the same generation but the fold axes orientations vary slightly. Because the study area did not include the shear zones no conclusive reason can be given but it can be assumed that the variation is due to movement along the shear zone or as a result of the intrusion of the Keimoes Suite. The area later experienced brittle deformation which is evident from the large number of joints found; the joints cut across the folds and show a different stress regime from the folds. Conjugate joints were observed on the field and plotted on stereonets. The results showed a vertical sigma two which confirmed that Koekoeb had been affected not only by compression tectonics but by the strike-slip movement on the shear zone.

Magister Theologiae - MTh / Van kleins af wou ek graag weet wat die naam arbeidskolonie beteken. Met die jare wat gekom en gegaan het, het ek besef dat daar heelwat meer in die naam "arbeidskolonie" moet sit as bloot maar nog net 'n naam vir 'n plek. Die leesstof wat ek van tyd tot tyd gelees het, het my gemotiveer om meer van die naam te wete te kom. Daarom is die voltooiing van hierdie verhandeling vir my In persoonlike en besondere hoogtepunt en oorwinning in my lewe wat terselfdertyd aan my groot bevrediging verskaf. In die eerste plek wil ek graag my studieleier, prof. J.C. Adonis bedank vir sy professionele voorligting, persoonlike aandag, belangstelling en gereelde terugvoering wat vir my besonder baie beteken het. Vir mnr. Patrick van Wyk van die N.G. Kerkargief, Kaapstad, mev. M. de Wee, die scribakassiere van die NG endinggemeente Kakamas vir hulle vriendelike hulpvaardigheid te alle tye. Ten tweede wil ek my innige dank en waardering uitspreek teenoor die personeel van die Staatsargief Kaapstad, die Nederduitse Gereformeerde Kerkargief Kaapstad, die Biblioteke van die Universiteite van Stellenbosch, Wes-Kaapland, die NGKerk Kakamas, die NG Sendinggemeente Kakamas en die Openbare Biblioteek Kakamas vir die toegang wat ek gehad het tot die gemeentelike verslae, notules en boeke. Ook aan prof. C.J. Kriel, die eerste leraar van die NG Sendinggemeente Kakamas vir sy bydrae om die publikasie moontlik te maak. Ook 'n woord van dank aan my eggenote vir haar hulp en ondersteuning en aan mev Petite Hoffman vir haar nuttige wenke en pynlik netjiese tikwerk. Ten slotte my nederige dank en lof aan God vir sy genade en krag wat my in staat gestel het om die tesis tot Sy eer daar te stel. Ek hoop en vertrou van ganser harte dat hierdie verhandeling in een of ander bestaande behoefte, hetsy vir die gebruik in die Katkisasieklas, Sondagskool, die Christelike Jeugvereniging en selfs die dagskool bevredigend sal voorsien.

>Magister Scientiae - MSc / The Proterozoic Namaqua-Natal Province comprises highly deformed rocks of medium to high grade metamorphism and is bordering the Archean Kaapvaal Craton to the west, south and east in South Africa. The sector to the west of the Craton, namely the Namaqua Sector, is structurally complex and subdivided from west to east into the Bushmanland Subprovince, the Kakamas and Areachap terranes of the Gordonia Subprovince and the Kheis Subprovince. The prominent Neusberg Mountain Range, with exposures to the north and south of the Orange River in the Kakamas Terrane constitutes evidence of crustal shortening as a result of continental collision of the Namaqua Sector block with the Kaapvaal Craton during the Namaquan Orogeny. The Mesoproterozoic Korannaland Group in the Kakamas Terrane is affected by faulting, folding and shearing.

M.Sc. / The Salt River deposit is a poly-metallic base metal deposit with a Zn-Cu-Pb metal content that occurs southwest of the town of Kakamas within the Northern Cape Province, South Africa. The Salt River deposit occurs within the Geelvloer Formation of the Bushmanland Subprovince of the Proterozoic Namaqua Metamorphic Province (NMP). This study constitutes the first detailed study of the host rock succession to the Salt River deposit, by investigating the lithostratigraphy, petrography geochemistry and geochronology. During the course of the study, various styles of wall-rock alteration were identified and investigated to determine their effect on the host rock succession. A further aim of this study was to classify the Salt River deposit and compare it to neighboring deposits occurring in the NMP. Geochronological studies were undertaken to define the age of mineralization. Detailed logging of exploration diamond drill core combined with petrographic investigation was used to define thirteen distinct lithotypes. The stratigraphy is dominated by felsic grey gneisses and mafic amphibolites, minor calc-silicate rocks, granitic augen gneisses, pegmatites and two lithologies that represent the metamorphosed equivalents of hydrothermally-altered host rock. Lithostratigraphic investigations yielded a rather uniform succession containing four distinct marker beds defined by their common occurrence and ease of correlation across various boreholes.