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squeezed into these fractures. The result is several "onion rings" of rocks of different ages. Erosion over many millions of years has stripped away the mountain and the highest peak. What we see today is not so much a volcanic crater, but a cross section through the magma pipes that were located at great depth below the mountain's summit.
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The formation of the
Pilanesberg occurred 2 billion years ago. As its zenith, the volcano towered to 7,000 metres in height. Over the time, a series of volcanic eruptions occurred. There were further outpourings of lava, craters collapsed, ring fracturing took place around the volcano and magma was
225:. 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 North-West of
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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
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The
Geology of the Pilandsberg and the Surrounding Country: An Explanation of Sheet 12 (Pilandsberg)
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Travel Guide and
Information. Interactive 3 D Map and Photographs of the Pilanesberg National Park
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flows South of the
Pilanesberg in an Easterly direction. There are a number of
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The
Geology of the Northern Portions of the Districts of Marico and Rustenburg
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363:. Pretoria: Geological Survey, Department of Mines and Industries.
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348:. Pretoria: Geological Survey, Department of Mines. p. 32.
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NASA Earth
Observatory hi-res photos and article, 22 July 2015
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mines right at the perimeter of the crater formation.
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450:Platmin Platinum Mine, Pilanesberg, South Africa
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283:that last erupted some 1,200 million years ago.
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409:Wikimapia - Pilanesberg Alkaline Ring Complex
373:: CS1 maint: multiple names: authors list (
263:Although geographically located within the
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391:Dictionary of Southern African Place Names
229:and is for the greater part enclosed in a
16:Ancient volcanic structure in South Africa
555:North West (South Africa) geography stubs
251:The name "Pilanes" comes from a historic
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359:Kynaston, H., Humphrey, W.A. (1920).
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69:List of mountains in South Africa
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271:part of a feature known as the
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483:. You can help Knowledge by
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255:chief named Pilane.
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76:Coordinates
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524:Categories
320:References
213:(formerly
86:25°14′25″S
369:cite book
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233:known as
114:Geography
89:27°4′33″E
54:Elevation
314:Sun City
298:See also
288:syenites
246:platinum
227:Pretoria
155:Location
281:volcano
259:Geology
179:Geology
64:Listing
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253:Tswana
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