Page 17 - Leshobo Technical Report_October2016

Technical Report for the

LESHOBO LIMESTONE

Taung, North-West Province

4. REGIONAL GEOLOGICAL SETTING

4.1 Transvaal Supergroup

The Griqualand-West Basin together with the Transvaal Basin and the Kanye Basin
(southern Botswana) constitute the Transvaal Supergroup (Fig 4.1). The original extent
of the Transvaal is estimated to cover an area of approximately 500 000 km2 and the
basins are separated by an arch-like structure (Duane, et al., 1988). The stratigraphic
subdivision of the Transvaal Supergroup generally consists of a basal mixed silisiclastic
and volcanic unit, followed conformably by a chemical sedimentary unit which is in turn
unconformably overlain by a mixed chemical-volcanic-silisiclastic rock unit (Beukes,
1983).

Figure 4.1: The location and aerial extent of the Transvaal Supergroup covering the
Transvaal and the Griqualand West Basins (Picture from: Beukes 1983).

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