Significance
Insignificant or Zero
Bituminous material in conglomeratic gold reefs (columnar kerogen, fly speck carbon) might
be derived frommicrobial material, but is probably an inorganic precipitate induced by radioactive uranium minerals
Additional Comments
Wits Supergroup has two main surface outcrop areas but a much extensive subsurface distribution
West Rand Group is main source of Wits gold (beds of quartzose, pyritic fluvial conglomerates or “banket” that are known as “reefs”)
Earliest known glacial rocks (Government Subgroup)
Geological Formations
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