The Decaturville crater, also referred to as the Decaturville Dome, is an impact crater

Impact crater

In the broadest sense, the term impact crater can be applied to any depression, natural or manmade, resulting from the high velocity impact of a projectile with a larger body...

 in Missouri

Missouri

Missouri is a US state located in the Midwestern United States, bordered by Iowa, Illinois, Kentucky, Tennessee, Arkansas, Oklahoma, Kansas and Nebraska. With a 2010 population of 5,988,927, Missouri is the 18th most populous state in the nation and the fifth most populous in the Midwest. It...

, United States, and is one of the 38th parallel structures

38th parallel structures

The 38th parallel structures, also known as the 38th parallel lineament, are a series of circular depressions or deformations stretching 700 km across southern Illinois and Missouri into eastern Kansas at a latitude of roughly 38 degrees north.Rampino and Volk postulated that these...

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It is 6 km in diameter and the age is estimated to be less than 300 million years (Permian

Permian

The PermianThe term "Permian" was introduced into geology in 1841 by Sir Sir R. I. Murchison, president of the Geological Society of London, who identified typical strata in extensive Russian explorations undertaken with Edouard de Verneuil; Murchison asserted in 1841 that he named his "Permian...

 or younger). The crater is exposed at the surface.

The effect that this impact had on the surrounding bedrock can be seen in a roadcut that runs along highway 5 about 16 miles north of Lebanon

Lebanon, Missouri

Lebanon is a city in Laclede County, Missouri, United States. The estimated population in July 2009 was 14,292. The population was 12,155 at the 2000 census. It is the county seat of Laclede County. The Lebanon Micropolitan Statistical Area consists of Laclede County.-Geography:Lebanon is located at...

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