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Impact Craters Meteorites & Asteroids

Meteorite impacts play a significant role in shaping Earth's surface, with over 100 known craters larger than 0.1 km in diameter. Asteroids larger than 1 km can unleash energy exceeding that of all global nuclear weapons combined. Notable sites include the Barringer Crater in Arizona and the Manicouagan Crater in Quebec, showcasing the diversity of impact craters around the globe. This guide explores formation processes, notable impacts, and resources for further learning on this fascinating topic in planetary geology.

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Impact Craters Meteorites & Asteroids

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  1. Impact CratersMeteorites & Asteroids

  2. Meteorite Impacts* • Meteoroids < 1m in diameter tend to burn up in atmosphere • Meteoroids > 1km can cause much damage • Earth has more than 100 craters > 0.1km in diameter. *Notes from meteor handout

  3. AsteroidImpacts* • There are many large basins and eroded craters that are suspected to be ancient asteroid sites. • An asteroid that is 1 km in diameter has more energy than 100 times all the nuclear weapons in the world right now. *Notes from meteor handout

  4. How are craters formed? Check out website: • http://miac.uqac.ca/MIAC/crater.htm

  5. Some craters in the world

  6. Eslöv meteor • Located in Eslöv Biennale, Sweden. • Hit ~6:00 am on November 3rd, 2007 • Crater ~ 15 m in diameter

  7. Barringer crater* • Located in Arizona, USA • Weighs approx. 200,000 tons • Meteor was ~ 50m in diameter (~1/2 soccer field) • Crater - 1.186 km diameter *Notes from meteor handout http://www.solarviews.com/eng/tercrate.htm

  8. Manicougan Crater • Located in Quebec, Canada. • ~200 to 300 million years old • ~95 km across • 5th largest

  9. Kara-Kul • Located in Parmir Mountains in Tajikistan. • ~45km diameter

  10. Clear Water Lakes Crater • Located in Quebec, Canada. • Only example on earth of pair impact craters. • Demonstrate multiple hit of cometary debris • Larger crater ~32 km • Smaller crater ~22 km

  11. Mistastin Lake crater, • Located in Nfld & Labrador, Canada • 28 km diameter http://www.solarviews.com/cap/earth/mistastn.htm

  12. Deep Bay Crater • Located in Saskatchewan, Canada • ~13 kilometer diameter • ~100 million years old http://www.solarviews.com/eng/tercrate.htm

  13. Wolfe Creek Crater • Located in Wolfe Creek National Park, Australia • ~0.875km diameter • Crater rim raises ~25m above plain level • Crater floor is ~50m below crater’s rim http://www.solarviews.com/cap/earth/wolf.htm

  14. Impacts around the world • Nifty website! http://geology.com/meteor-impact-craters.shtml

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