Earth Impact Database (www.unb.ca/passc/ImpactDatabase)
Lists all confirmed meteorite impacts in the world.
Earth Impact Effects (www.lpl.arizona.edu/impacteffects)
An easy-to-use, interactive website for estimating effects of meteorite impacts.
Geology Museum, UW-Madison (geologymuseum.org)
The museum houses a collection of many of the meteorites found in Wisconsin. Stop by to take a look.
Meteorite or Meteorwrong? (meteorites.wustl.edu/realities.htm)
A lengthy checklist from the Washington University in St. Louis to help you determine whether you’ve found a meteorite…or something else. Includes helpful photos and explanations.
Do I have a meteorite? (https://meteorites.asu.edu/meteorites/meteorite-id)
Take this quick quiz from the Arizona State University Center for Meteorite Studies to learn whether your rock is terrestrial or a possible meteorite.
Rocks from Space (second edition), by O. Richard Norton, 1998, Mountain Press Publishing Company, 447 pages
An exhaustive but approachable discussion of meteorite science. Covers meteorite discoveries and profiles the individuals involved.
Scientific papers written about the Rock Elm impact structure
—Rock Elm structure, Pierce County, Wisconsin: A possible cryptoexplosion structure, William S. Cordua, 1985, Geology 13:372–374
—The Rock Elm meteorite impact structure, Wisconsin: Geology and shock-metamorphic effects in quartz, Bevan M. French, William S. Cordua, and J.B. Plescia, GSA Bulletin, January 2004, 116:200–218
—Geology of the Rock Elm Complex, Pierce County, Wisconsin, William S. Cordua and Thomas J. Evans, 2007, Wisconsin Geological and Natural History Survey Open-File Report 2007-02.
Terrestrial impact craters (www.solarviews.com/eng/tercrate.htm)
Includes a photo gallery profiling over a dozen of the world’s largest impact craters.
Barringer Meteor Crater, Arizona (barringercrater.com)
At 50,000 years old, the Barringer crater is still quite fresh, geologically speaking; it shows none of the weathering seen at Rock Elm.