List of impact craters in North America

This list of impact craters in North America includes all confirmed impact craters as listed in the Earth Impact Database. These features were caused by the collision of large meteorites or comets with the Earth. For eroded or buried craters, the stated diameter typically refers to an estimate of original rim diameter, and may not correspond to present surface features.

Contents

Canada

Name Location Diameter (km) Age (Ma/millions) Coordinates
Brent Ontario 3.8 396 ± 20
Carswell Saskatchewan 39 115 ± 10
Charlevoix Quebec 54 342 ± 15
Couture Quebec 8 430 ± 25
Deep Bay Saskatchewan 13 99 ± 4
Eagle Butte Alberta 10 < 65
Elbow Saskatchewan 8 395 ± 25
Gow Saskatchewan 4 < 250
Haughton Devon Island, Nunavut 23 39
Holleford Ontario 2.35 550 ± 100
Île Rouleau Quebec 4 < 300
La Moinerie Quebec 8 400 ± 50
Lac à l'Eau Claire Est
Clearwater East		 Quebec 26 290 ± 20
Lac à l'Eau Claire Ouest
Clearwater West		 Quebec 36 290 ± 20
Manicouagan Quebec 100 214 ± 1
Maple Creek Saskatchewan 6 < 75
Mistastin Labrador 28 36.4 ± 4
Montagnais Nova Scotia 45 50.50 ± 0.76
Nicholson Northwest Territories 12.5 < 400
Pilot Northwest Territories 6 445 ± 2
Pingualuit
formerly Chubb and Nouveau-Québec		 Quebec 3.44 1.4 ± 0.1
Presqu'île Quebec 24 < 500
Saint Martin Manitoba 40 220 ± 32
Slate Islands Ontario 30 about 450
Steen River Alberta 25 91 ± 7
Sudbury Ontario 250 1850 ± 3
Viewfield Saskatchewan 2.5 190 ± 20
Wanapitei Ontario 7.5 37.2 ± 1.2
West Hawk Manitoba 2.44 351 ± 20

Mexico

Name Location Diameter Age (years) Coordinates
Chicxulub Yucatan, Mexico 170 km 64.98 ± 0.05 million

United States

Name Location Diameter (km) Age (Ma/millions) Coordinates
Ames Oklahoma 16 470 ± 30
Avak Alaska 12 < 95
Barringer Arizona 1.19 0.049 ± 0.003
Beaverhead Idaho, Montana 60 600
Calvin Michigan 8.5 450 ± 10
Chesapeake Bay Virginia 90 35.5 ± 0.3
Cloud Creek Wyoming 7 190 ± 30
Crooked Creek Missouri 7 320 ± 80
Decaturville Missouri 6 < 300
Des Plaines Illinois 8 < 280
Flynn Creek Tennessee 3.8 360 ± 20
Glasford Illinois 4 < 430
Glover Bluff Wisconsin 8 < 500
Haviland Kansas 0.015 < .001
Kentland Indiana 13 < 97
Manson Iowa 35 73.8 ± 0.3
Marquez Texas 12.7 58 ± 2
Middlesboro Kentucky 6 < 300
Newporte North Dakota 3.2 < 500
Odessa Texas 0.168 < 0.050
Red Wing North Dakota 9 200 ± 25
Rock Elm Wisconsin 6 < 505
Santa Fe New Mexico unknown 1500 ± 100
Serpent Mound Ohio 8 < 320
Sierra Madera Texas 13 < 100
Upheaval Dome Utah 10 < 170
Wells Creek Tennessee 12 200 ± 100
Wetumpka Alabama 6.5 81.0 ± 1.5

Unconfirmed impact craters

The following craters are officially considered "unconfirmed" because they are not listed in the Earth Impact Database. Due to stringent requirements regarding evidence and peer-reviewed publication, newly-discovered craters or those with difficulty collecting evidence generally are known for some time before becoming listed. However, entries on the unconfirmed list could still have an impact origin disproven.

Name Location Diameter (km) Age Coordinates Probability
Alamo bolide impact Nevada, USA unknown 367 million 0 (confirmed)[1]
Gatun structure Panama 2.7–3.0 20 million 2 (probable)[1]
Jeptha Knob Kentucky, USA 4.3 425 million 2 (probable)[1]
Panther Mountain New York, USA 10 375 million 2 (probable)[1]
Snows Island South Carolina, USA 11 Unknown 2 (probable)[1]
Toms Canyon New Jersey, USA 22 35 million 2 (probable)[1]
Victoria Island structure California, USA 5.5 37–49 million [2] 2 (probable)[1]
Weaubleau-Osceola Missouri, USA 15–20 325.0 ± 15.0 million 2 (probable)[1]

See also

References

  1. ^ a b c d e f g h Rajmon, David (2009-10-10). "Impact Database 2009.2" (Excel). Impact Field Studies Group. http://impacts.rajmon.cz/data/Impact_database_2009_2.xls. Retrieved 2009-12-28. 
  2. ^ "Victoria Island". Geographic Names Information System, U.S. Geological Survey. http://geonames.usgs.gov/pls/gnispublic/f?p=gnispq:3:::NO::P3_FID:237071. 

External links

Geology
Lists
Confirmed
≥20 km diameter
Topics
Research
Astronomy
Observation
Defense
Potential threats