Arizona meteorite crater
Arizona meteorite crater(Barringer Crater) The archetypal impact explosion crater in N Arizona, 1.2 km across and 180 m deep, formed about 25 000 years ago by a massive iron meteorite, maybe 70 m in diameter. The rim is composed of folded and inverted rock layers that have been pushed out from a central point. The meteorite almost vaporized completely, only a few hundred tonnes being scattered over 80 km2 around the crater in the form of tiny iron spherules. It has been named after Daniel Barringer who studied it and first suggested its extraterrestrial origin.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006