Africa's Impact Structures:

Tswaing (Pretoria Saltpan)         Location: South Africa

        Latitude: S25 24'

        Longitude: E28 5'

        Age (Ma): 0.220 0.052

        Diameter (km): 1.13

        Exposed at surface: yes

Click here to learn about the environmental effects of the impact
and the geology of the Tswaing crater.

 Tswaing crater taken from rim. The other rim is the hillside in the distance.
 The lake lies in the center of the crater. Photo by David Kring.

Cross section (above right) geology adapted from Reimold et al. (Geology 1992)
and gravity profile from Fudali et al. (Meteoritics 1973).