Impact Craters
Links
Earth Impact Database
http://www.unb.ca/passc/ImpactDatabase/
Crater names, location, size, and age. Background information, images, FAQ.
Terrestrial Impact Craters
http://www.lpi.usra.edu/publications/slidesets/craters.html
Text describing formation of impact craters. Images, glossary.
Reuben Johnson's K/T Expedition -- 2001
http://members.tripod.com/reubskt53715/
Background info on the Chicxulub impact crater at the K/T (Cretaceous/Tertiary) boundary with photos of the 2001 NASA/Planetary Society expedition to Belize and Mexico to study and gather ejecta samples.
Terrestrial Impact Cratering and Its Environmental Effects
http://www.lpl.arizona.edu/SIC/impact_cratering/intro/
World map of impact sites, details on the Chicxulub site, and details on environmental effects of impacts.
Three Craters in Israel
http://www.gsanctuary.com/3craters.html
Investigates the possibility they have been caused by comet fragments.
Meteor Crater
Official site for the visitors center at the Barringer meteor crater. Short history, animations, visitor information.
Meteor Crater
http://www.meteorite.com/meteor_crater/
Images and short explanations of geologic features near the rim of the Barringer meteor crater.
Geology 376 - 2001 Field Trip
http://members.tripod.com/reubs376_2001/
Travelogue of a geology class field trip to the Barringer meteor crater. Images, crater description, topographic map.
Impact Craters on Earth
http://miac.uqac.ca/MIAC/impact.htm
Map of crater locations in Canada, crater images, explanation and images of rock altered by impact.
Earth Impact Craters
http://exobio.ucsd.edu/Space_Sciences/earth_impact_craters.htm
Background, list of craters.
Why are impact craters always round?
http://www.sciam.com/askexpert_question.cfm?articleID=000DBCF7-C08B-1C71-9EB7809EC588F2D7
The answer given in an article from Scientific American.
Astronomy Picture of the Day - Impact: 65 Million Years Ago
http://antwrp.gsfc.nasa.gov/apod/ap000226.html
Computer rendering of Chicxulub crater, from gravity and magnetic field data.
Astronomy Picture of the Day - Manicouagan Impact Crater on Earth
http://antwrp.gsfc.nasa.gov/apod/ap001213.html
Image taken from space shuttle Columbia in 1983.
Astronomy Picture of the Day - Barringer Crater on Earth
http://antwrp.gsfc.nasa.gov/apod/ap990711.html
Aerial photograph.
Crater
http://www.lpl.arizona.edu/tekton/crater.html
A program that relates crater size to projectile size.

