description Rock Elm Overview
Rock Elm is a meteorite impact structure near Rock Elm in Wisconsin, United States. The impact produced a roughly circular depression about 6.5 kilometers across and occurred during the Ordovician period. The site is recognized through geological evidence of shock and deformation in the underlying rocks. Rock Elm is studied as part of the record of Paleozoic impacts in North America and illustrates how ancient craters can be modified by erosion.
help Rock Elm FAQ
Where is the Rock Elm impact structure?
Rock Elm is near the community of Rock Elm in Wisconsin, United States. The site is identified through geological evidence rather than a sharply preserved crater rim.
How large was the Rock Elm depression?
The impact produced a roughly circular depression about 6.5 kilometers across. Later geological processes changed the original surface appearance.
When did the Rock Elm impact occur?
The impact occurred during the Ordovician period. That makes Rock Elm a very ancient structure in the geological record.
How do scientists recognize Rock Elm as an impact structure?
Scientists use evidence of shock and deformation in the rocks. The roughly circular form and impact-related geological changes support its interpretation as a meteorite impact site.
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