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The gold-bearing rocks are limited to six sites where Archean rivers from the north and west formed fan deltas, with many braided channels, before flowing into the "Witwatersrand Sea" to the south, where the earlier sediments that form the older rocks of the Witwatersrand Supergroup had been deposited.
The gold rush saw massive development of Johannesburg and the Witwatersrand, and the area today is the prime metropolitan area of South Africa. One consequence of the gold rush was the construction of the first railway lines in this part of Africa. As a result of the rapid development of the goldfields on the Witwatersrand in the 1880s and the ...
As part of the Witwatersrand, the largest gold mineralization on earth, Mponeng is the result of the discovery of the basin by Europeans. Beginning in the 1850-70s a series of mineral discoveries were made in the area, including those of Pieter Jacobus Marais panning gold from a river and Henry Lewis finding quartz and gold vein on a farm, that led to the Witwatersrand Gold Rush in 1886. [9]
The Witwatersrand rocks are followed, in succession, by the Ventersdorp lavas at a distance of about 35 km (22 mi) from the centre, and the Transvaal Supergroup, consisting of a narrow band of the Ghaap Dolomite rocks and the Pretoria Subgroup of rocks, which together form a 25-to-30-kilometre-wide (16 to 19 mi) band beyond that. [14]
Contents. George Harrison (prospector) George Harrison was the prospector who allegedly discovered gold in the Witwatersrand on Langlaagte farm. He was a friend of George Walker [ 1 ] and George Honeyball. He apparently found the main reef in 1886. He later left the Rand. He is believed to have sold his claim for £10.
At these depths the temperature of the rocks is 140 °F (60 °C). [28] The gold in the Witwatersrand Basin area was deposited in ancient river deltas, having been washed down from surrounding gold-rich greenstone belts to the north and west.
Free State Gold Rush. The Free State Gold Rush was a gold rush in Free State, South Africa. It began after the end of World War II, even though gold had been discovered in the area around the year 1934. [1][2] It drove major development in the region until the mid–to–late 1980s as part of the mineral revolution in South Africa. [3]
Mineral Revolution. The farm near Johannesburg where gold was first discovered in 1886. The Mineral Revolution is a term used by historians to refer to the rapid industrialisation and economic changes which occurred in South Africa from the 1860s onwards. The Mineral Revolution was largely driven by the need to create a permanent workforce to ...