Figure 59 (above). North America interpreted, enhanced seismic tomographic plans at 60 km depth and outer core at 2850 km depth with cross-section 36°N.
This figure summarises my concept of super-heated mineralising fluids flowing up from the Core Mantle Boundary to the surface and depositing minerals. This was explained in detail in the previous section 12. Read captions on Figure 59 for more detail.
One interesting point is that there are huge bowl-shaped structures all the way down to the core suggesting that these might be the the base shockwave fronts of earlier impacts which occurred perhaps down to the 500 km depth level. The base of these impacts would certainly be focal points for heat release from the core and that is probably why most mines appear to be on rings that are deep seated, large and almost vertical sided.
Every seismic tomography cross-section in all continents have similar structures suggesting the early impacts were worldwide.
This is a short but, I think, important post with an important concept to grasp.
Share it with your colleagues.
Have successful exploration!
Bob Watchorn
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