dc.contributor.advisor |
Botha BJV |
en_US |
dc.contributor.advisor |
Botha BJV |
en_US |
dc.contributor.author |
Tordiffe Eric Arthur Wolferstan |
en_US |
dc.date.accessioned |
2013-07-02T14:08:34Z |
|
dc.date.available |
2013-07-02T14:08:34Z |
|
dc.date.issued |
1970 |
en_US |
dc.identifier.uri |
http://hdl.handle.net/11070.1/3291
|
|
dc.description.abstract |
Abstract taken from Opsomings, Bloemfontein, 1971, p. 100 [corresponds with abstract from original thesis] : |
en_US |
dc.description.abstract |
Extreme conditions of metamorphism resulted in the fusion of the sediments in the deep-seated roots of synclines. The granitic magna which was thus produced, intruded at different stages as three different types of granite. Conditions of the bornblende-hornfels facies of contact metamorphism were caused by the intrusions |
en_US |
dc.description.abstract |
The only other rock in the area are dykes of dolerite which probably belong to the Karoo System. Superficial sediments, Tertiary in age, cover the larger part of the area |
en_US |
dc.description.abstract |
The sediments of the Damara System are believed to have been deposited as sandstone, greywacke, shale and limestone in a slowly sinking geosyncline. Compressive stress from the south-east, caused the isoclinal folding of these sediments. Later stress, directed from the north-east, gave rise to dome-like structures in the schist. Some of these structures were intruded by diapiric-like intrusions of granite. A conspicuous normal fault, with a north-easterly strike, cuts through the domes. This proves that it post-dates the last period of folding |
en_US |
dc.description.abstract |
A few pegmatites have been worked in the area. but seem to have been of little economic importance |
en_US |
dc.format.extent |
59 p |
en_US |
dc.language.iso |
eng |
en_US |
dc.subject |
Brandberg |
en_US |
dc.subject |
Regional geology |
en_US |
dc.title |
The geology of an area southeast of the Brandberg, South West Africa |
en_US |
dc.type |
thesis |
en_US |
dc.identifier.isis |
F099-199502130001679 |
en_US |
dc.description.degree |
Bloemfontein |
en_US |
dc.description.degree |
South Africa |
en_US |
dc.description.degree |
University of the Orange Free State |
en_US |
dc.description.degree |
M Sc |
en_US |
dc.masterFileNumber |
1672 |
en_US |