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D.3. METEOR CRATER hero.jpg

Meteor Crater

Meteor Crater

  • Exhibition Text

    • The first geological report on the gigantic Northern Arizona Crater, in 1891, focused not on the crater itself but on tiny diamonds found in nearby meteorites. Back then, researchers assumed that only an explosive volcanic eruption could make such a large crater. But after more careful study of the meteorites and altered rocks in and around the crater, scientists realized that it must have formed during a massive meteorite impact.

      The story of Meteor Crater, also called Barringer Crater, began 50,000 years ago with an asteroid roughly twice as wide as this hall hurtling to Earth at about 50 times the speed of sound. The explosive force of its impact blasted out 175 million tons of limestone and sandstone, sprayed molten rock upward and tossed chunks of meteorite several miles away.

      Once the dust and debris settled, the crater sat quietly for tens of thousands of years as the Arizona climate gradually grew drier, helping to preserve evidence of the impact.

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  • For Educators

    • Topic: Earth Science

      Subtopic: Meteorites

      Keywords: Asteroids--Collisions with Earth, Astrogeology, Collisions (Astrophysics), Earth (Planet)--Surface, Meteor Crater (Ariz.), Meteorite craters, Meteorites

      Audience: General

In This Section

D.3.1.1. Canyon diablo hero.jpg

Canyon Diablo (AMNH 2235)

This is the second-largest surviving fragment of the Canyon Diablo meteorite that formed Meteor Crater; it probably broke off when the main mass hit the atmosphere.

D.3.2. Puffed up and pulverized min.jpg

Puffed up and pulverized

Both the pulverized rock, called rock flour, and the foamy-looking lechatelierite shown below are made of glass.

D.3.3. Proof of impact min

Proof of impact

Shocked, melted and pulverized rocks helped prove that meteorite impacts can make craters.

D.3.5.3. Scale model of Meteor Crater min.jpg

Barringer Crater

Meteor Crater, also called Barringer Crater, formed in a meteorite impact.

D.3.8. Canyon diablo. AMNH 5030.jpg

Canyon Diablo (AMNH 5030)

Tens of thousands of Canyon Diablo meteorite fragments were found at Meteor Crater—most were much smaller than this 200 kilogram (440 pound) sample.

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