Near-Earth Comet Exploded over North America about 1,500 Years Ago archaeology science
in Argentina , and one in Jordan , suggests that these natural catastrophes are far more common than previously suspected.”
“In the western hemisphere, Hopewell archaeological sites in the Ohio River valley contain an anomalously high concentration and diversity of meteorites when compared to all other cultural periods. They include iron meteorites, stony iron meteorites, and stony meteorites.” The meteorite fragments were identified from the telltale concentrations of iridium and platinum they contained.“Micrometeorites have a chemical fingerprint. Cosmic events like asteroids and comet airbursts leave behind high quantities of a rare element known as platinum,” Professor Tankersley said.
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