Locations where 12,800-year-old platinum spikes have been recorded on Earth.
Image: Francis Thackeray/Wits University
What killed the Clovis people was the result of being bombarded for over 10 years with Taurid material some rocks were over one mile in diameter. The ‘shower’ continued with decreasing intensity for the next 100 years.
The resulting impact splatter - huge ice chunks falling from 10s of thousands of feet impacting the ground and shattering like billions of ice knives shredding everything in their paths - vegetation, animals, people. The good news is these huge quantities of water extinguished the fire storms that had been raging across the continent for years from the initial impacts. North America south of the Ice Sheet was essentially fried. There is archeological, paleontological, geological (and other disciplines) evidence for all of this. Metal deposits just add to the evidence.
See the later half of Graham Hancock’s “America Before”.