Gold Distribution in Relation to Depositional Processes in the Proterozoic Carbon Leader Placer, Witwatersrand, South Africa
- J. D. Collinson and
- J. Lewin
Published Online: 29 APR 2009
Copyright © 1983 The International Association of Sedimentologists
Modern and Ancient Fluvial Systems
How to Cite
Nami, M. (1983) Gold Distribution in Relation to Depositional Processes in the Proterozoic Carbon Leader Placer, Witwatersrand, South Africa, in Modern and Ancient Fluvial Systems (eds J. D. Collinson and J. Lewin), Blackwell Publishing Ltd., Oxford, UK. doi: 10.1002/9781444303773.ch44
- Published Online: 29 APR 2009
- Published Print: 7 FEB 1983
Print ISBN: 9780632009978
Online ISBN: 9781444303773
- gold distribution in relation to depositional process in Proterozoic Carbon Leader placer – Witwatersrand, south Africa;
- Carbon Leader Placer;
- heavy mineral entrapment;
- palaeoenvironmental analysis;
- sedimentological investigation
A detailed study of 900 m2 of the Carbon Leader placer established the relationship between sedimentological features and the distribution pattern of gold.
The Carbon Leader placer at the site investigated displayed many features characteristic of a fluvial environment. Two different subfacies were recognized, one consisting of lenticular-shaped conglomerate/quartzite units considered to have been formed by active channelized flow and the other, a single sheet-like conglomerate, often with underlying thin carbonaceous seams and probably formed by sheet floods. The study of the gold distribution revealed that the stream channels, representing zones of high activity, yielded very erratic gold values while the adjacent plains had consistently high gold values.
The distribution pattern of gold as observed in the area studied is considered to be the result of contrasting hydrodynamic processes which prevailed within the two sub-environments.