Hydrological Evaluation of the Groundwater Potential in the Fractured Karoo Aquifer Using Magnetic and Electrical Resistivity Methods: Case Study of the Balfour Formation, Alice, South Africa

Table 1

Lithostratigraphic subdivisions of the Karoo Supergroup [40].

Supergroup	Group	Subgroup	Formation	Member	Lithology
Karoo	Stormberg		Drakensberg		Basalt; Pyroclastic deposits
			Clarens		Sandstone
			Elliot		Red mudstone; Sandstone
			Molteno		Coarse sandstone; Khaki and grey shale; Coal measures
	Beaufort	Tarkastad	Burgersdorp		Mudstone; Sandstone; Grey shale
			Katberg		Sandstone; Red mudstone; Grey shale
		Adelaide	Balfour	Palingkloof	Red mudstone; Sandstone; Grey shale
				Elandsberg	Sandstone; Siltstone
				Barberskrans	Sandstone; Khaki shale
				Daggaboersnek	Grey shale; Sandstone; Siltstone
				Oudeberg	Sandstone; Khaki shale
			Middleton		Shale; Sandstone; Red mudstone
			Koonap		Grey sandstone; Shale
	Ecca		Waterford		Sandstone; Shale
			Fort Brown		Shale; Sandstone
			Ripon		Sandstone; Shale
			Collingham		Grey shale; Yellow claystone
			Whitehill		Black shale; Chert
			Prince Albert		Khaki shale
			Dwyka		Diamictite; Tillite; Shale