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Geophysical Signature Of The Pretoria Saltpan Impact Structure And A Possible Satellite Crater
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 3rd SAGA Biennial Conference and Exhibition, Apr 1993, cp-224-00006
Abstract
The Pretoria Saltpan Crater is located in the southern<br>portion of the Bushveld Complex, some 40 km NNW<br>of Pretoria, South Africa. The near-circular structure<br>of 1.13 km diameter exhibits a well-preserved, uptilted<br>granite rim. Granite breccia overlies Karoo sediment in<br>places, indicating a post-Karoo age for the cratering<br>event. The spatial coincidence of the crater with<br>various alkaline and ultramafic intrusives has been used<br>to argue for a volcanic origin of the structure (Wagner,<br>1922; Feuchtwanger, 1973).