A giant meteor may have exploded over Alaska thousands of years ago, shooting out metal fragments like buckshot, some of which embedded in the tusks of woolly mammoths and the horns of bison. Simultaneously, a large chunk of the meteor hit Alaska south of Allakaket, sending up a dust cloud that blacked out the sun over the entire state and surrounding areas, killing most of the life in the area. Embedded iron particles surrounded by carbonized rings in the outer layer of a mammoth tusk from Alaska. Inset photo shows how an object ripped through the tusk. Image courtesy Richard Firestone. Such is the scenario envisioned by Rick Firestone, a staff scientist at the Lawrence Berkeley National Laboratory inCalifornia.
Firestone and his colleagues have found mammoth tusks and a bison skull with nickel-rich iron particles in them on one side, suggesting the metal fragments all came from the same direction. Firestone"s theory emerged when his colleague, Alan West of Dewey, Arizona, saw at a Phoenix gem and mineral show a mammoth tusk peppered with tiny bits of metal. Intrigued, West and Firestone looked at tusks owned by the same dealer in Calgary. By passing a magnet over mammoth tusks in Calgary, Firestone and West found seven mammoth tusks collected somewhere near the Yukon River and a bison skull from Siberia that had tiny iron fragments burned into them. The fragments also contained nickel. "One in 1,000 tusks had this material in it," Firestone said. Firestone also thinks he may have found the divot left by the ancientmeteorite, an impact crater that is now occupied by a round body of water named Sithylemenkat Lake in the upper Kanuti River drainage. "The creeks coming out of the lake are very rich in nickel," Firestone said, referring to a metal associated with meteorites. "And the shape is consistent with a crater from a meteorite that may have been a half a kilometer in diameter‹a pretty large thing." A meteorite that big would have torched anything within a 100-mile radius and could have buried the mammoths farther away from the crater, preserving the tusks struck by metal fragments.
View: Full Article | Source: Alaska Report
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Posted on Sunday, March 09 - 2008
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Reference : Ancient Mysteries, Archeology
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Archaeological finds at Bosnian Pyramid site
Hidden Gobi Desert relics found
Mystery Surrounds Leavenworth's Underground City
Mysteries of Glastonbury Tor
Gold coin horde found in Jerusalem
Ancient Mediterranean flood mystery solved
Ancient Rainforest Revealed in Coal Mine
4,000-year-old flowers found at grave site
Worlds oldest doodle found on rock