Stratiform gold mineralization in palaeosol and ironstone of early Proterozoic age, Transvaal Sequence, South Africa

1986 ◽  
Vol 21 (4) ◽  
Author(s):  
J.E.J. Martini
Keyword(s):  
South Africa ◽  
Gold Mineralization ◽  
Early Proterozoic ◽  
Proterozoic Age

Provenance of the Old Red Sandstone: Pb isotope evidence from Arran, western Scotland

1984 ◽  
Vol 75 (2) ◽  
pp. 239-241 ◽  
Author(s):  
A. P. Dickin
Keyword(s):  
Significant Contribution ◽  
Strike Slip ◽  
Pb Isotope ◽  
Early Proterozoic ◽  
Red Sandstone ◽  
Boundary Fault ◽  
Crustal Block ◽  
Isotope Evidence ◽  
Strike Slip Movement ◽  
Proterozoic Age

ABSTRACTOld Red Sandstone sediments from Arran in western Scotland yield an array of Pb isotope compositions whose slope corresponds to an age of 1830 ± 400 Ma. These compositions are not consistent with a significant contribution of material from the Southern Highlands, Midland Valley, or Southern Uplands, but are similar to the Torridonian sandstones of NW Scotland. Bearing in mind the probable Laxfordian provenance of the Torridonian assemblage, this points to a source for the Old Red Sandstone in a crustal block of early Proterozoic age corresponding to the age of the Laxfordian episode. Since such a source is not presently in a position to yield the Old Red Sandstone, strike-slip movement along the Highland Boundary fault is a strong possibility.

Gold mineralization in Natal, South Africa

1994 ◽  
Vol 18 (2) ◽  
pp. 99-109 ◽  
Author(s):  
W.D. Bullen ◽  
R.J. Thomas ◽  
A. McKenzie
Keyword(s):  
South Africa ◽  
Gold Mineralization
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