Clays derived from the Lower Dwyka Shales, occurring in the vicinity of Grahamstown
The Lower Dwyka Shales in South Africa oocur south of latitude 32⁰; resting conformably upon the Witteberg quartzites, which extend as coastal mountain rangee along the length of the South Coast. The shales, being less resistant to weathering than the quartzites below, and the Dwyka Tillite immediat...
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| Format: | Others |
| Language: | English |
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Rhodes University
1928
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| Online Access: | http://hdl.handle.net/10962/d1005547 |