https://commons.ru.ac.za/vital/access/manager/Index ${session.getAttribute("locale")} 5 https://commons.ru.ac.za/vital/access/manager/Repository/vital:5845 Wed 12 May 2021 20:53:10 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:3832 Wed 12 May 2021 19:11:31 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5810 Wed 12 May 2021 18:21:09 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:3848 Wed 12 May 2021 17:09:13 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:4081 Wed 12 May 2021 16:44:06 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:3835 Wed 12 May 2021 16:20:07 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:20967 Thu 13 May 2021 16:22:02 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:4084 Thu 13 May 2021 15:33:30 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:3857 Thu 13 May 2021 13:27:11 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5349 Thu 13 May 2021 09:16:52 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5024 Thu 13 May 2021 08:49:11 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5042 Thu 13 May 2021 08:46:24 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:3843 Thu 13 May 2021 07:24:56 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5501 Thu 13 May 2021 06:28:30 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5049 8500°) obtained from quarternary Qz-An-Ab-Or- H₂0 plots. The metamorphic grade increases westwards from medium grade to high grade. In the east, the metapelites contain andalusite, and coexisting muscovite and quartz. This indicates that temperatures of 6000° at 3,5- 4 kb pressure were attained. In the west, coexisting wollastonite and anorthite in the Khan gneisses indicate pressure- temperature conditions of 720° at 4,5-5 kb. Two tectonic events were responsible for the regional structure. An early F₁ episode produced east- west oriented overturned folds and was followed by an intense F₂ episode of isoclinal folding which is responsible for the dominant northeast - southwest regional fabric. The interference of these folds in the proximity of the underlying basement produced the complex dome and basin structures seen in the central and western parts of the area. An F₃ episode of minor importance was also recognized. The presence of continental basement rocks in this central part of the Damara belt is evidence for formation of the orogen by in-situ deformation rather than continental collision.]]> Thu 13 May 2021 03:54:54 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:3847 Thu 13 May 2021 00:32:24 SAST ]]>