As the IO (impacting object, described here) made its way toward impact (described here), its tail left ice impact craters dispersed over a wide region (most of it now under the waters it delivered). A recent paper, “The Younger Dryas interval at Wonderkrater (South Africa) in the context of a platinum anomaly,” reports on IO-borne materials found and analyzed by the authors.
Interestingly, impact remnants have been found in Chile and, more recently, under two miles of water off the central coast of California. All the reported impacts were caused fragments from the IO moments before its impact in the Southern Ocean.
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