Summary provided by author in published version of thesis:
Some bivalves of the species Terraia altissima (Holdhaus) 1918 which are found for the first time in the Huab area belong to an "endemic" Permian bivalve fauna of the Parana Basin. This indicates the correspondence of facies as well as the stratigraphic equivalence of the Gai-As Formation (Huab Basin) and the Lower Rio do Rasto Formation (Parana Basin)
Because of geodynamic and environmental relations between both the Huab Basin and the Great Karoo Basin, the dating of the 2nd folding of the Cape Fold Belt gives a minimum age of 258+2 m. y. (Lowermost Kazanian resp. Kungurian-Kazanian boundary) for the termination of the Gai-As Formation. Therefore the Permian age of the Gai-As Formation is confirmed and the stratigraphic correlation of the Gai-As Formation with the Triassic Omingonde Formation is demonstrably false
Based on biostratigraphic and radiometric ages from Namibia and South Africa, a timespan from 210±5 m. y. to 149+1 m. y. (Rhaetian to Oxfordian) can be deduced for the sedimentation of the Triassic Etjo Sandstone Formation
A Palynostratigraphy for the Karoo sediments of the Huab Basin could not be established due to the lack of pollen and spores in statistically relevant amounts. The prevailing stratigraphies of South America and South Africa lead to different ages of comparable formations of both, the Parana Basin and the Great Karoo Basin. The connection of both stratigraphies with respect to the new results of the Huab Basin shows that the slightly higher ages of South Africa, deduced from radiometric datings, reflect the chronological conditions in the best way
In addition the geodynamic and climatic development of Western Gondwana is described. In detail the reconnaissence of the diachronous development of climate for the Parana-Huab area and the Great Karoo area explains the different facies developments of the three basins. The climatic differences directly resulted from different distances of the basins from the paleo-southpole. Fundamentally all basins show a continuous climate-melioration. This development started with glacial conditions of an ice age (Dwyka, Harare), passed cool- and warm-temperate climates and terminated with a subtropical-aride desert environment
The whole sedimentation in the Huab Basin was accompanied by magmatism. Basaltic volcanism appeares locally in. the Lower Permian Verbrande Berg Formation and, after the Mesozoic sedimentation, basinwide in the Upper Jurassic. Doleritic intrusions with ages of Upper Jurassic-Lower Cretaceous are very common in all the Karoo sediments of the Huab Basin
