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Harvey H. Nininger examining soil collected near the Meteor Crater rim during his 1946–1948 field investigation. He believed that nickel-rich metallic spheroids he found in the soil were condensation
droplets from a cloud of vaporized metal from the impacting meteorite, and constituted tangible proof of Forest R. Moulton’s explosion theory of the crater’s formation. Photograph courtesy of Dr. Carleton B. Moore, Center for Meteorite Studies, Arizona State University, Tempe, Arizona.

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Nininger examining soil.jpg
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Amy Chou
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799x1146 / 416.5KB
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20201016 History of Geology @ ASU
Harvey H. Nininger examining soil collected near the Meteor Crater rim during his 1946–1948 field investigation. He believed that nickel-rich metallic spheroids he found in the soil were condensation<br /> droplets from a cloud of vaporized metal from the impacting meteorite, and constituted tangible proof of Forest R. Moulton’s explosion theory of the crater’s formation. Photograph courtesy of Dr. Carleton B. Moore, Center for Meteorite Studies, Arizona State University, Tempe, Arizona.