Glacial geologist in the Kalahari desert of South Africa
In April 2007, I spent three weeks in South Africa with a friend and college from Gothenburg University, professor David Cornell. In the company of one of his students, Lynn, we travelled from Kape Town to the Uppington area, on the southern border of the Kalahari desert. There we met up with two of his students, Åsa and Karin. The purpose of the field trip was to locate and study glacial deposits of the so called Dwyka Formation, depositied during repeated Permian glaciations of Gondwana. Yes, below the sand dunes of the Kalahari desert lie thick (900 m) glacial deposits of this ancient Gondwana glaciation. They formed when the Gondwana land mass was brought over the south pole region. This was a magnificent trip, with absolutely great geology, natural scenery, wildlife. Below, some highlights of the trip...
Lions in the Transfrontier National Park (on the border of South Africa and Botswana.
A glacial geologist in the Kalahari desert; glacially striated stone from the southern edge of the Kalahari desert.
Kalahari sand dune.
Archean (2,6 BY) Banded Iron, Elefanthoek area; Kimberlite, Richtfontein are, close to Namibian border.
Dropstone in glaciolacustrine Dwyka sediments; Stratified glaciolacustrine sediments. Stick is 1 m long.
Outcrop of Dwyka, about 1 km from Namibian frontier, on the edge of the town of Richfontain.
Kalahari Springbok on a dolomite dike of Jurassic age. In the background: salt pan and a second dike.
Debris flow in subaquaeously deposited Dwyka sediments.
Dwyka formation (right) on top of Cambrian sandstone (left).
Cambrian sandstone (beach); Glacial striae on sandstone. Ice movement from left to right.
Lynn, studying Dwyka lag surface, close to Uppington; Tombstone weathering of Dwyka, Karoo Basin.
Boulder of Dwyka, Karoo Basin.
Intensely weathered Cape granite (of Cambrian age). Kaolin sediments to the right in the photo.
Cape of Good Hope, where the Atlantic Ocean meets the Indian Ocean.
David on Cape granite; a couple of penguins resting on 600 MY old Cape granite. Simonstown.