On the sedimentation of the Molteno sandstones in the vicinity of Molteno, C.P.

Simple item page
dc.contributor.authorRust, Izak Cornelisen_ZA
dc.contributor.otherStellenbosch University. Faculty of Sciences. Dept. of Earth Sciences.
dc.date.accessioned2012-08-27T12:26:08Z
dc.date.available2012-08-27T12:26:08Z
dc.date.issued1950
dc.descriptionThesis (M. Sc.) -- University of Stellenbosch, 1959.
dc.description.abstractENGLISH ABSTRACT: The sedimentary history of the Molteno Stage is unravelled by investigation of its primary structures and petrographical characteristics. The existence of cyclical sedimentation in the lower 800 - 900 feet due to pulsatory diastrophism in the southern provenance is revealed. Broad "stratigraphic inversion" has taken place during the course of sedimentation of the Molteno sediments and arguments are presented fro including at least the upper Burghersdorp Beds in the molteno Stage. The terrestrial nature of the Molteno Beds is confirmed and depposition is shown to have proceeded under conditions of relatively high precipitation and low mean temperatures. Measurements on cross-bedding prove that the main provenance region lay towards the south , but preliminary study of the feldspars seems to indicate that south-easterly or easterly elevated land played an as yet undetermined role in he production of sediment. Investigation of the feldspars also indicate a progressive upward decrease in acid plagioclase content and an attendant increase in potassium feldspars, and proves the progressive mingling of sedimentary waste from a granitic provenance. Heavy minerals reveal the initial increasing importance of the Dwyka tillarte as a sediment producer and its gradual supersedence by the Witteberg quartzite. Size-distribution analysis is used in an attempt to decipher the control of diastrophism in the southern provenance region on the production of the Molteno sediments.en_ZA
dc.description.abstractAFRIKAANSE OPSOMMING: Geen opsomming beskikbaar.en_ZA
dc.description.versionMastersen_ZA
dc.format.extent134 pages : illustrationsen_ZA
dc.identifier.urihttp://hdl.handle.net/10019.1/67514
dc.language.isoen_ZA
dc.publisherStellenbosch : Stellenbosch Universityen_ZA
dc.rights.holderStellenbosch Universityen_ZA
dc.subjectSedimentation and depositionen_ZA
dc.subjectSandstone -- South Africa -- Moltenoen_ZA
dc.subjectGeology -- South Africa -- Moltenoen_ZA
dc.subjectDissertations -- Geologyen_ZA
dc.subjectUCTDen_ZA
dc.titleOn the sedimentation of the Molteno sandstones in the vicinity of Molteno, C.P.en_ZA
dc.typeThesisen_ZA
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
rust_sedimentation_1959.pdf
Size:
6.93 MB
Format:
Adobe Portable Document Format
Description:
Download thesis
Download
Collections
Masters Degrees (Earth Sciences)