Des Plaines crater
Des Plaines crater | |
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![]() Information about the Des Plaines Disturbance is included in this trail marker in the Cook County Forest Preserve. The sign is near Big Bend Lake, along the Des Plaines River Trail. | |
Impact crater/structure | |
Diameter | 8 kilometres (5.0 mi) |
Age | <280 Ma |
Exposed | No |
Drilled | Yes |
Location | |
Country | USA |
State | Illinois |
Municipality | Des Plaines |
The Des Plaines crater or Des Plaines disturbance is recognized as an impact crater in Cook County, Illinois, United States. It is located beneath the eastern part of the city of Des Plaines, which is a suburb of Chicago.[1][2]
The Des Plaines crater is 5.5 miles (8.9 km) in diameter and covers an area of approximately 25 square miles (65 km2).
References
- ^ ISBN 978-0-87842-346-0.
- ^ "Des Plaines". Earth Impact Database. University of New Brunswick. Archived from the original on 29 November 2014. Retrieved 21 November 2014.
- ^ a b c "Faulting and the Des Plaines Disturbance". Prairie Research Institute. 23 October 2009. Archived from the original on 7 April 2014. Retrieved 21 November 2014.
- ^ Bentle, Kyle (February 7, 2017). "When a Meteor Hit: Millions of Years Ago in Des Plaines". Chicago Tribune. Retrieved January 5, 2018.
When did it happen? Scientists don't know, exactly, but you can narrow it down to a 300-million year timeframe, Monson said. The oldest the impact could be dates back to the Pennsylvanian Period in the geologic time scale, 299 million to 323 millions years ago. The youngest it could be is about 2 million years, when advancing glaciers covered the crater.
- ^ . Retrieved 21 November 2014.