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(wĭtwô`tərzrănd') [Afrik.,=white water ridge] or

the Rand,

region, Gauteng prov. (formerly a part of TransvaalTransvaal
, former province, NE South Africa. With the new constitution of 1994, it was divided into Eastern Transvaal (now Mpumalanga), Northern Transvaal (now Limpopo), Pretoria-Witwatersrand-Veereeniging (now Gauteng), and part of North West prov.
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), South Africa. The area, which forms the watershed between the Vaal and Olifants rivers, is c.25 mi (40 km) wide and extends more than 60 mi (100 km) from west to east in a series of parallel ranges 5,000 to 6,000 ft (1,520–1,830 m) above sea level. Major cities of the Rand are JohannesburgJohannesburg
, city, now part and seat of City of Johannesburg metropolitan municipality, Gauteng prov., NE South Africa, on the southern slopes of the Witwatersrand at an altitude of 5,750 ft (1,753 m).
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, BenoniBenoni
, city, Gauteng prov., NE South Africa, on the Witwatersrand, now administratively part of the Ekurhuleni metropolitan municipality. It is the distribution center for a gold-mining district and is part of a large industrial complex known for its iron and steel plants.
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, BoksburgBoksburg
, city, now part of Ekurhuleni metropolitan municipality, Gauteng prov., NE South Africa. It is an important coal-mining center. Some gold mining is still carried on.
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, SpringsSprings,
city, now part of Ekurhuleni metropolitan municipality, Gauteng prov., NE South Africa. It is an industrial center of the Witwatersrand, a gold- and uranium-mining region.
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, and GermistonGermiston
, city, now part and seat of Ekurhuleni metropolitan municipality, Gauteng prov., NE South Africa, on the Witwatersrand. The chief industries are gold mining and processing and the manufacture of liquid oxygen; other chemicals, machinery, textiles, and clothing are
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The Rand is one of the world's richest gold-mining regions. The gold occurs in reefs, or thin bands, that are mined at depths of up to 10,000 ft (3,050 m). Development of the Rand dates from the 1880s. Although many of the older mines are now nearly exhausted, the Rand still produces most of South Africa's gold and much of the total world output. Silver and iridium are recovered as gold-refining byproducts, and the region also has coal mines. The Rand also has such industries as engineering, steel milling, metallurgy, machine building, diamond cutting, food processing, and the manufacture of chemicals, cement, furniture, and clothing.



(also the Rand), the world’s largest deposit of gold ores, which also contain uranium. The Witwatersrand is located on the territory of the Republic of South Africa, in the south of Transvaal Province. It is a mountain ridge, 150-300 m high, on the High Veld Plateau; it forms the divide between the Limpopo and Vaal rivers. The ore-bearing area stretches from Johannesburg to the south-west for 350 km (ranging from 25 to 100 km in width). The deposit was discovered in 1884. From the beginning of exploitation through 1967, about 21,000 tons of gold were mined. In 1965, the output was about 900 tons (about two-thirds of the total output in the capitalist world). The gold content is 8-20 g per ton of merchantable ore. The gold reserves have been estimated at tens of thousands of tons. In addition to gold, the Witwatersrand ores contain from 0.019 to 0.038 percent and rarely 0.1 percent uranium. The uranium reserves in such low-grade ores have been estimated at 300,000 tons. There are deep mines here, reaching a depth of 3,700 m, and the temperature in the mines is 50°-52° C.

Within the ore-bearing area, three stages of rock have developed: the lower, composed of Archean gneisses and crystalline schists; a middle level of folded shales, quartzites, conglomerates, and igneous rock from the Witwatersrand, Ventersdorp, and Transvaal systems of the late Precambrian; and an upper level composed of gently sloping continental deposits from the Upper Paleozoic. The ore bodies consist of bands of Witwatersrandian conglomerates separated by interlayers of barren quartzite. The conglomerates form the so-called reefs, with the industrial varieties of them being called bankets. The thickness of the individual bands of conglomerates is from 2-3 cm to 3 m, and the length is dozens of km to a depth of 3-4 km. The ore-bearing conglomerates are composed of light-colored quartz gravel, cemented together by fine-grained quartz, chlorite, carbonate, carbonaceous matter, and sulfides, predominantly pyrite. Minerals that have been found in the detrital fraction in the cement include chromite, zircon, spinel, garnet, rutile, diamond, apatite, monazite, and aggregates of osmiridium and platinum. The gold is divided into primary gold, which is found in a finely dispersed form in the sulfides, and secondary gold, which runs through the gravel and its mineral cement in thread vein-lets. The uranium minerals are represented by thucholite, uranite, and brannerite.

The problem of the genesis of the Witwatersrand is still debated. Some geologists view this deposit as an ancient delta placer that was later metamorphosed, while others see it as a deposit of hydrothermal origin.

On the basis of the development of gold mining and other ore-extracting sectors, the Witwatersrand has become the chief industrial center of the nation, producing about two-fifths of the output of industry.


Uran v drevnikh konglomeratakh. Moscow, 1963.
Smirnov, V. I. Geologiia poleznykh iskopaemykh, 2nd ed. Moscow, 1969.



a rocky ridge in NE South Africa: contains the richest gold deposits in the world, also coal and manganese; chief industrial centre is Johannesburg. Height: 1500--1800 m (5000--6000 ft.)
References in periodicals archive ?
The University of Witwatersrand, in Johannesburg, South Africa, is one of only two universities in Africa ranked in two separate international rankings as a leading institution in the world and is the only university in the country that features in the top one percent in the world in seven defined fields of research according to the 2007 ISI international rankings.
Herbal medicines would have provided advantages for early human health, and the use of insect-repelling plants adds a new dimension to our understanding of human behavior 77,000 years ago" said Lyn Wadley, honorary professor at the University of the Witwatersrand.
sediba individuals, and especially the female, possessed bowl-shaped, humanlike hip bones, an unexpected trait for hominids with such small brains, says Witwatersrand anthropologist Job Kibii.
Pettifor is research director of the Adolescent Health Research Programme at the Reproductive Health Research Unit, University of the Witwatersrand, South Africa.
Levy also received his bachelor's degree from the University of Witwatersrand, is a Chartered Accountant and a graduate of Harvard Business School, where he was a Baker Scholar.
See Saul Dubow, "Colonial Nationalism, The Milner Kindergarten and the rise of 'South Africanism', 1902-10," History Workshop (Spring 1997): 53-86; see also George Fredrickson, White Supremacy: A Comparative Study In American and South African History, xx; Marks and Trapido, "Lord Milner and the South African State," 50-81; Charles van Onselen, "The world the mine owners made: social themes in the economic transformation of the Witwatersrand," in Studies in the Social and Economic History of the Witwatersrand, 1886-1914 volume one (London, 1982), 1-44; see also Jeremy Krikler, Revolution From Above, Rebellion From Below (Oxford, 1992).
I have been looking forward to visiting Witwatersrand University.
Professor Peter Cleaton-Jones, head of a committee that oversees Witwatersrand University's research on humans, said Bezwoda failed to follow standard research methods for comparing treatment effects.
In a telephone interview, his mentor, Phillip Tobias, also a Witwatersrand paleontologist, said: ``It really is a magnificent specimen.
Pettifor qualified as a doctor from the University of the Witwatersrand in 1968 and then specialised in paediatrics, which he completed in 1974.
The TCTA, mandated by the Department of Water Affairs to tackle AMD in the Witwatersrand mining areas, awarded a R319-million contract to JSE-listed Group Five for the construction of treatment works and monitoring shafts in the Central basin.
JOHANNESBURG, March 5, 2012 /PRNewswire/ - Witwatersrand Consolidated Gold Resources or "Wits Gold" (JSE&TSX: WGR; ADR: WIWTY) is pleased to announce the appointment of Mr Kenneth Dicks as an independent non-executive director of the Company effective 5[sup.