List of impact structures in North America

This list includes all 60 confirmed impact structures in North America in the Earth Impact Database (EID). 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.

Canada

NameLocationDiameter (km)Age (Ma/millions)CoordinatesBrentOntario3.8396 ± 20 CarswellSaskatchewan39115 ± 10 CharlevoixQuebec54342 ± 15 CoutureQuebec8430 ± 25 Deep BaySaskatchewan1399 ± 4 Eagle ButteAlberta10< 65 ElbowSaskatchewan8395 ± 25 GowSaskatchewan4< 250 HaughtonNunavut2339 HollefordOntario2.35550 ± 100 Île RouleauQuebec4< 300 La MoinerieQuebec8400 ± 50 Lac à l'Eau Claire EstClearwater EastQuebec26460–470 Lac à l'Eau Claire OuestClearwater WestQuebec36286.2 ± 2.6 ManicouaganQuebec100214 ± 1 Maple CreekSaskatchewan6< 75 MistastinNewfoundland and Labrador2836.4 ± 4 MontagnaisAtlantic continental shelf4550.50 ± 0.76 NicholsonNorthwest Territories12.5< 400 PilotNorthwest Territories6445 ± 2 Pingualuitformerly Chubb and Nouveau-QuébecQuebec3.441.4 ± 0.1 Presqu'îleQuebec24< 500 TunnunikNorthwest Territories25~130-350 July 25, 2012. "Researchers discover new impact crater in the Arctic," University of Saskatchewan, Accessed August 8, 2012. NOTE: Geographic coordinates are in the comments section.UhackatikQuebec25~390 Saint MartinManitoba40220 ± 32 Slate IslandsOntario30about 450 Steen RiverAlberta2591 ± 7 SudburyOntario2501850 ± 3 ViewfieldSaskatchewan2.5190 ± 20 WanapiteiOntario7.537.2 ± 1.2 West HawkManitoba2.44351 ± 20 WhitecourtAlberta0.04<0.0011

Mexico

NameLocationDiameter (km)Age (Ma/millions)CoordinatesChicxulubYucatan17064.98 ± 0.05

United States

NameLocationDiameter (km)Age (Ma/millions)CoordinatesAmesOklahoma16470 ± 30 AvakAlaska12< 95 BarringerArizona1.190.049 ± 0.003 BeaverheadIdaho, Montana60600CalvinMichigan8.5450 ± 10 Chesapeake BayVirginia9035.5 ± 0.3 Cloud CreekWyoming7190 ± 30 Crooked CreekMissouri7320 ± 80 DecaturvilleMissouri6< 300 Des PlainesIllinois8< 280 Flynn CreekTennessee3.8360 ± 20 GlasfordIllinois4< 430 Glover BluffWisconsin8< 500 HavilandKansas0.015< 0.001 KentlandIndiana7.24< 97 MansonIowa3573.8 ± 0.3 MarquezTexas12.758 ± 2 MiddlesboroKentucky6< 300 NewporteNorth Dakota3.2< 500 OdessaTexas0.168< 0.050 Red WingNorth Dakota9200 ± 25 Rock ElmWisconsin6< 505 Santa FeNew Mexico6-13<1200 Serpent MoundOhio8< 320 Sierra MaderaTexas13< 100 Upheaval DomeUtah10< 170 Wells CreekTennessee12200 ± 100 WetumpkaAlabama7.6 ~83

Unconfirmed impact structures

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.

NameLocationDiameter (km)Age (years)CoordinatesProbabilityAlamo bolide impactNevadaunknown367 million Bow CityAlberta8 km70 million CorossolQuebec4 km2.6 million Decorah craterIowa5.6470 million 2 (probable) Gatun structurePanama2.7–3.020 million 2 (probable)PantasmaNicaragua101 million 4 (not probable)Jeptha KnobKentucky4.3425 million 2 (probable)Panther MountainNew York state10375 million 2 (probable)Snows IslandSouth Carolina11unknown 2 (probable)Toms CanyonNew Jersey2235 million 2 (probable)Victoria Island structureCalifornia5.537–49 million 2 (probable)Weaubleau-OsceolaMissouri15–20325.0 ± 15.0 million 2 (probable)Brushy Creek FeatureLouisiana211,000 - 30,000 years 2 (probable).Heinrich, P.V. (2003) Possible Meteorite Impact Crater in St. Helena Parish, Louisiana. Search and Discovery Article. no. 50006. American Association of Petroleum Geologist, Tulsa, Oklahoma. Retrieved March 27, 2011.Heinrich, P.V. (2003) Origin of a Circular Depression and Associated Fractured and Shocked Quartz, St. Helena Parish, LA. Transactions of the Gulf Association of Geological Societies. vol. 53, pp. 313-322.Anonymous, 2008, LGS Researcher Featured in Meteor Crater News Story. Center for Energy Studies, Louisiana State University Baton Rouge, LA 70803. Retrieved March 27, 2011.

List of impact structures in North America

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