Manson Impact Structure

Learn about the Manson Impact Structure. For more information and articles/reports please visit the library!

 "It is the remains of a mountain-sized meteorite that plowed into the ground in northwest Iowa near Manson, about 74 million years ago."

-  IowaOutdoors Vol. 67, Iss 4.

impact structure graph

Location of Manson Impact Structure and principal features of its crater

by Raymond R. Anderson

 "...the samples we're looking at were formed by an event so powerful, it shattered the very bedrock into pieces, some the size of pinheads, hurled the fragments for miles around to be mixed with other rocks of different vintages, and liquified the earth into a cauldron of molten rock wider than an Iowa county."

-  IowaOutdoors Vol. 67, Iss 4.


m-1 crater