Not 'basin wide'I'll try to keep it simple for you. So you won't be tricked (again) into buying a dud by Tx and his gang.
There are known gold nuggets occurrences everywhere in that region. Some have been known for over 100 years while others have been identified by metal detectorists during the last 25-30 years. Latest Kairos find is a mere 8 oz of gold. Well advertised, of course. At least as their presentation says they are a diversified mineral exploraton company. Unlike Novo.
Unfortunately for investors who bought the idea of Wits 2.0 and/or the weird precipitation from seawater theory the nuggets are derived from the weathering and erosion of extensive ancient gold reefs (see the numeroud gold in quartz finds mixed with the other nuggets, same as in any other placer deposit around the world i.e. recent or not). Look at the numerous archaic gold reefs that extend throughout the region.
Once you recognize that you can zoom in on the most prospective conglomerate areas which are close to those gold (hardrock) reefs. But as usual rivers brought their coarse gold load to the paleo ocean in a few specific areas, only. These delta fans are the richest areas and these rich but usually small, irregular and discontinuous patches could be mined at profit by smaller operators not by junior miners. Open pit not long life underground mining operations.
The coarse gold was then redistributed by waves, currents, etc along the shorelines, on paleo beaches etc and local somewhat rich acummulations of gold could still occurr. Usually this redistributed gold could extend for kms but it is low grade (not mineable in this hardrock/cemented conglomerates setting. So again, it is not 'basin wide' from an economic point of view. It is basin wide though for detectorists which only scan the surface and have fun while making some money on their gold finds. Ozzie pastime.
It were basin wide if that precipitation really happened. Btw it wwould have been impossible to happen as nothing grows in the sea from microns to big nuggets. Well, Tiny can believe that and Tx has the nerve to advertise that.
There are a few other mechanisms that could explain the presence of nuggets in paleo-gravels, gravels that will be then transformed in cemented conglomerates, and later on in some instances in a skarn material (thermal metamorphism generated by the hot basaltic lava flowing on top of them). And these other mechanisms could provide an explanation for the lack of fine gold in many of the conglomerates.
Btw the lack of fine gold can and would make many of these richer occurrences uneconomic to mine even in an open pit scenario.
There is more to this story of which I only gave you a taste tonite so you won't fall prey to gangsters that are trying to sluice your wallets.
DYODD.