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| Below infrastructure |
That part of a company’s mineral reserve that can only be accessed following certain capital expenditure which has yet to be approved |
| Craton |
A part of the earth’s crust that has attained stability and has been little deformed for a long period of geological time |
| Diorite |
A group of plutonic rocks intermediate in composition between acidic and basic |
| Felsic |
An igneous rock having abundant light-coloured minerals |
| Graben |
A block of rock that lies between two faults, and has moved downward to form a depression between two adjacent fault blocks |
| Greenstone |
A field term for any compact dark green altered or metamorphosed basic igneous rock that owes its colour to chlorite |
| Horst |
A block of rock that lies between two faults and has moved upward relative to the two adjacent fault blocks |
| Kaapvaal Craton |
The ancient protocontinental basement of South Africa |
| Lacustrine |
Pertaining to sediments formed in lakes |
| Mafic |
An igneous rock composed chiefly of dark, ferromagnesium minerals |
| Ophiolite |
A group of mafic and ultramafic igneous rocks derived by metamorphism, whose origin is associated with an early phase of the development of a geosyncline |
| Plunge |
The inclination of a fold axis or other linear feature, measured in the vertical plane |
| Sub-outcrop |
A rock stratum that unconformably underlies another rock stratum |
| Syncline |
Concave fold in stratified rock, in which strata dip down to meet in a trough |
| Witwatersrand Basin |
A sedimentary basin in South Africa |
