High-grade metamorphism and migmatizaof the Namaqua metamorphic complex around Aus in the Southern Namib Desert, South West Africa

 

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dc.contributor.advisor De Villiers, John en_ZA
dc.contributor.advisor Kroner, A en_ZA
dc.contributor.author Jackson, MPA en_ZA
dc.date.accessioned 2016-02-01T09:58:41Z
dc.date.available 2016-02-01T09:58:41Z
dc.date.issued 1976 en_ZA
dc.identifier.citation Jackson, M. 1976. High-grade metamorphism and migmatizaof the Namaqua metamorphic complex around Aus in the Southern Namib Desert, South West Africa. University of Cape Town. en_ZA
dc.identifier.uri http://hdl.handle.net/11427/16621
dc.description Bibliography : pages 261-277. en_ZA
dc.description.abstract Rocks of the Namaqua Metamorphic Complex are exposed in an area of 10 000 km² in the northwestern part of the Namaqua Mobile Belt east of Liideritz. The Garub sequence represents the oldest rocks in the Aus area and comprises a diverse group of layered rocks of mainly semi-pelitic, pelitic, mafic, calcareous and quartzose composition. These rocks have been metamorphosed to form marbles, calcitic gneisses, metaquartzites, biotite schists, sillimanitecordierite garnet gneisses, amphibolites and granolites with minor amounts of iron formation and magnesian rocks. The principal metasediments are concentrated in west-trending zones. A central zone of calcareous rocks broadens westwards and contains the largest known bodies of carbonate rocks in the Namaqua Metamorphic Complex. The calcareous zone is bounded in the north by a narrow beit of quartzose rocks and in the south, by a broad zone of aluminous rocks. Gradational rock types between these zones are compatible with original sedimentary lithofacies changes. Layered biotite gneiss of psammitic composition has been interfolded with units of the Garub sequence. Both these rock units are present as inclusions within a tonalitic augen gneiss. en_ZA
dc.language.iso eng en_ZA
dc.subject.other Geological Sciences en_ZA
dc.title High-grade metamorphism and migmatizaof the Namaqua metamorphic complex around Aus in the Southern Namib Desert, South West Africa en_ZA
dc.type Thesis / Dissertation en_ZA
uct.type.publication Research en_ZA
uct.type.resource Thesis en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Science en_ZA
dc.publisher.department Department of Geological Sciences en_ZA
dc.type.qualificationlevel Doctoral en_ZA
dc.type.qualificationname PhD en_ZA
uct.type.filetype Text
uct.type.filetype Image


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