Zimbabwe Craton
The Zimbabwe Craton is an area in Southern Africa of ancient continental crust, being a part of the ancient continent of Western
Origin
The Zimbabwe Craton formed from the suture of two smaller blocks, the Tokwe Segment to the south and the much smaller Rhodesdale Segment (aka Rhodesdale gneiss), to the north. The rocks of these segments have been dated to as early as 3.46 Ga.[1] The Tokwe Segment probably stabilized about 3.3 Ga., and there is evidence that the Rhodesdale Segment stabilized about the same time.[3][4]
The synchroneity and extent of the Tokwe Segment is considered strong evidence supporting a predominantly intra-cratonic origin for the Late Archaean greenstone belts of Zimbabwe and refuting an arc accretion origin for the craton.[4]
References
- ^ ISBN 978-1-897799-36-9.
- ISBN 978-1-86239-109-3.)
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: CS1 maint: multiple names: authors list (link - doi:10.1016/s0899-5362(02)00015-5.)
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: CS1 maint: multiple names: authors list (link - ^ ISBN 978-0-19-854056-4.