We have presented a mathematical model for generation of far transfer placers that successfully predict the distribution of heavy minerals in alluvial placer deposits. The model implies that spit placers formation can occur in a brief time interval.

The model shows that the process of natural "far transfer placers" generation is equal to formation of artificial spit placers downwards from the cassiterite ore dressing gears. It let us to estimate the time interval of natural placers generation on the base of known time of artificial placer deposits formation.

The time span for generation natural "far transfer placers" in the north-eastern Russia is estimated not more than 2000 years. This upper limit is approximately 500 times less than the age derived from the standard geological time scale. It mean that the true rate of alluvial "far transfer placers" formation is dramatically larger than evolutionary geologists usually assume.

The available data let us approximately calculate the initial rate of denudation after the Flood, at least, for north-eastern Russia. The calculation shows that the average (for Chaun region) initial rate of denudation might be 10 - 32 times more than present-day one.

This model has enormous practical importance for prognostication both value and location of alluvial natural and artificial spit placer deposits.