Pilanesberg

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Pilanesberg
ISS017-E-6869pilanesberg.jpg
NASA picture of Pilanesberg with Vaalkop Dam on the right side
Elevation 1,687 m (5,535 ft)[1]
Listing List of mountains in South Africa
Location
Pilanesberg is located in South Africa
Pilanesberg
Pilanesberg
Location in South Africa
Location North West Province
Range Witwatersrand
Coordinates 25°14′25″S 27°4′33″E / 25.24028°S 27.07583°E / -25.24028; 27.07583Coordinates: 25°14′25″S 27°4′33″E / 25.24028°S 27.07583°E / -25.24028; 27.07583
Geology
Type Extinct volcano
Age of rock Proterozoic

The Pilanesberg (formerly Pilandsberg[2][3]) is a mountain in the North West Province, South Africa. The mountain is an ancient volcanic structure, circular in shape, that rises from flat surrounding plains. It is formed by three concentric ridges or rings of hills, of which the outermost has a diameter of about 24 km. The Pilanesberg is located 100 km to the northwest of Pretoria and is for the greater part enclosed in a protected area known as Pilanesberg Game Reserve.

The Elands River flows south of the Pilanesberg in an easterly direction. There are a number of Platinum mines right at the perimeter of the crater formation.

The name "Pilanes" comes from a historic Tswana chief named Pilane.[4]

Geology[edit]

Although geographically located within the Witwatersrand range, the mountain is geologically part of a feature known as the Pilanesberg Alkaline Ring Complex.[5] It is a vast circular crater of a very ancient extinct volcano that last erupted some 1,200 million years ago.

The Pilanesberg is one of the largest volcanic complexes of its type, there are few similar alkaline volcanic structures in the world. Different types of syenites, including a number of rare minerals, occur in the crater area.[6]

See also[edit]

References[edit]

  1. ^ Impati
  2. ^ Humphrey, W.A. (1914). The Geology of the Pilandsberg and the Surrounding Country: An Explanation of Sheet 12 (Pilandsberg). Pretoria: Geological Survey, Department of Mines. p. 32. 
  3. ^ Kynaston, H., Humphrey, W.A. (1920). The Geology of the Northern Portions of the Districts of Marico and Rustenburg. Pretoria: Geological Survey, Department of Mines and Industries. 
  4. ^ Raper, R.E. Dictionary of Southern African Place Names. Human Sciences Research Council (South Africa). 
  5. ^ Wikimapia - Pilanesberg Alkaline Ring Complex
  6. ^ Mindat - Pilanesberg Mt

External links[edit]