Impact Craters Meteorites Asteroids Meteorite Impacts Meteoroids 1

Impact Craters Meteorites & Asteroids

Meteorite Impacts* • Meteoroids < 1 m in diameter tend to burn up in atmosphere • Meteoroids > 1 km can cause much damage • Earth has more than 100 craters > 0. 1 km in diameter. *Notes from meteor handout

Asteroid Impacts* • 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

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

Some craters in the world

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

Barringer crater* • Located in Arizona, USA • Weighs approx. 200, 000 tons • Meteor was ~ 50 m in diameter (~1/2 soccer field) • Crater - 1. 186 km diameter *Notes from meteor handout http: //www. solarviews. com/eng/tercrate. htm

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

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

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

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

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

Wolfe Creek Crater • Located in Wolfe Creek National Park, Australia • ~0. 875 km diameter • Crater rim raises ~25 m above plain level • Crater floor is ~50 m below crater’s rim http: //www. solarviews. com/cap/earth/wolf. htm

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