Skip to Main Content
Skip Nav Destination

An epigenetic replacement model is proposed for Witwatersrand gold mineralization. In this model, unconformities that developed during deposition of the Upper Witwatersrand sediments were sites of selective accumulation of iron pisolites-ferricretes and carbon seams. These Fe-C-bearing intervals are part of 1- to 2-m-thick reef packages that were preferred channelways for Au-S-bearing metamorphic fluids because of their lithologic heterogeneity and preferential accommodation of strain during deformation. It is suggested that the metamorphic fluids were associated with a high-strain, cleavage-forming event recorded in the Witwatersrand, Venters-dorp, and Transvaal successions.

Selective replacement of Fe-C-bearing phases by Au-S-bearing metamorphic fluids accounts for the...

You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
Close Modal

or Create an Account

Close Modal
Close Modal