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威特沃特斯兰德金矿区矿化砾岩中的石英砾石总是强烈破碎的,裂隙面上覆有石英、层状硅酸盐、有机质、晶质铀矿、金和贱金属硫化物,说明所有这些相至少有一部分是后生的。威特沃特斯兰德盆地5个金矿区样品的裂隙充填物中有相似的共生序列。这意味着破碎作用和几个成矿幕是波及整个盆地的事件,而不是局部作用的结果。石英的流体包裹体资料表明,遍及整个盆地的这些流体是在相对较低(<250℃)的温度条件下沉淀的,这与矿化发生在2025Ma的弗雷德堡事件之后的其他证据相一致。
Quartz gravels in the mineralized conglomerates at the Witwatersrand Goldfield are always strongly crushed with quartz, phyllosilicate, organic matter, crystalline uranium, gold and base metal sulphides , Indicating that at least part of all these phases are epigenetic. There are similar symbiotic sequences in the fracture fillings of the five goldfield samples in the Witwatersrand Basin. This means that the crushing effect and several metallogenic curtains are an event that affects the entire basin, not the result of local action. Quartz fluid inclusion data indicate that these fluids are precipitating at relatively low (<250 ° C) temperatures throughout the entire basin, consistent with other evidence of mineralization occurring after the 2025 Ma Freedburg event .