1887

oa South African Journal of Geology - A Palaeocurrent study of the Dwaal Heuvel Formation, Transvaal Supergroup

Volume 78 Number 2
  • ISSN : 1012-0750
  • E-ISSN: 1996-8590

 

Abstract

Measurement of 833 cross-bed foresets in the Dwaal Heuvel Formation, Transvaal Supergroup (2 224 ± 21 million years old) at 41 localities along the eastern and north-eastern outcrop rim of the Transvaal Basin indicate transport of sediment towards the south and south-south-west. The formation becomes thinner and finer-grained in the down-current direction, and eventually feathers out into an assemblage of shale with oolitic ironstone lense,. The latter are considered to represent a more distal facies of the Dwaal Heuvel arenites.

Some of the elastic material which makes up the Dwaal Heuvel was probably derived by the de-roofing of the once-deeply buried metamorphics of the Limpopo Mobile Belt. This detritus was carried to the northern limit of the basin by rivers, there to be cistributed laterally by marine currents moving consistently to the south and south-west.

Loading full text...

Full text loading...

Loading

Article metrics loading...

/content/journal/10520/EJC-1ac855cc55
1975-05-01
2020-09-30

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error