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  • Meteorite Impact Craters - Geophysical Institute
    Recently formed craters are easier to identify Arizona's famous Meteor Crater (officially known as Barringer Crater) near Flagstaff was formed only about 25,000 years ago Between 5 and 20 megatons of energy were released when an iron asteroid about 50 yards in diameter, traveling at more than 8 miles per second, struck the earth
  • Alaskan Meteorites - Geophysical Institute
    The other two are the Savonoski Crater, roughly 500 meters across, in Katmai, and a small one only 63 meters across on Amak Island north of the Alaska Peninsula Dr Juergen Kienle of the Geophysical Institute notes that the Amak crater might be a maar rather than a meteorite crater
  • Massive impact crater discovered in Greenland
    This is the first time that a crater of any size has been found under one of Earth’s continental ice sheets The impact crater is among the 25 largest yet found on Earth Mark Fahnestock, a UAF research professor, worked with colleagues at NASA and the Natural History Museum of Denmark to verify the discovery, initially made in 2015
  • Alaskas Deep Impact on the North Slope | Geophysical Institute
    Both recently had attended a field trip to Indiana to see an impact crater, the massive divot left behind after a meteorite hit the ground Looking at the pulverized rocks from the petroleum reserve, they thought the Navy diggers may have tapped into an impact crater on the North Slope
  • The mystery of mammoth tusks with iron filings
    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 Firestone said the dust kicked up by the meteor would have eliminated any mammoths that survived the meteor’s hit
  • The Great Nevada Meteor of 1894 - Metal Detecting For Meteorites . . .
    Full Member; 192 Location: Southern CA Interests: Upland Game Hunting, Rock Hounding, Nugget Hunting, Desert Camping
  • Largest Known Meteor Craters - DetectorProspector. com
    I was under the impression that a meteor impact was part of the formation of the Gulf of Mexico Yup, I watched a documentary on it, it's the second largest known crater on earth, that article had it as the 3rd one on the list
  • Cold Meteorites - Geophysical Institute
    A meteor weighing from several pounds to several hundred pounds will, indeed, partially burn up before striking the ground Entry to the atmosphere may be at speeds as great as 90,000 miles per hour (40 km see) Roughly half of the meteor will be burned away due to heating as the meteor is slowed down by the air
  • UAF scientist reveals cause of lost magnetism at meteorite site
    Shatter cones are believed to only form when a rock is subjected to a high-pressure, high-velocity shock wave such as from a meteor or nuclear explosion Kletetschka’s work will now allow researchers to determine an impact site before shatter cones are discovered and to better define the extent of known impact sites that have lost their
  • GB_Amateur - DetectorProspector. com
    3) Supposed meteorite I bought at the Tucson Gem and Mineral show It also is quite dark (gray black) and the swab showed no pink color I filed off a spot to show bright white metal but still no pink color 4) Supposed meteorite I'm pretty sure I bought at the visitor center of the Arizona Meteor Crater about 45 years ago





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