List of possible impact structures on Earth
List of possible impact structures
The following tables list geological features on Earth that some individuals have associated with impact events, but for which there is currently no confirming scientific evidence in the peer-reviewed literature.

List of possible impact structures on Earth

Section Title: List of possible impact structures
Table Section Text: The following tables list geological features on Earth that some individuals have associated with impact events, but for which there is currently no confirming scientific evidence in the peer-reviewed literature.

Name	Location	Confidence	Diameter	Age	Notes	Image	Coordinates

38th Parallel structures	United States (Missouri, etc.)	variable	2-17	320 ± 10 Ma	-	37°30′N 88°18′W / 37.5°N 88.3°W 37°48′N 90°12′W / 37.8°N 90.2°W 37°48′N 91°24′W / 37.8°N 91.4°W 37°54′N 92°42′W / 37.9°N 92.7°W 37°42′N 92°24′W / 37.7°N 92.4°W 38°00′N 93°36′W / 38.0°N 93.6°W 37°42′N 95°42′W / 37.7°N 95.7°W

Ak-Bura (Murgab)	Tajikistan	1	80	0.3 ka 1700 AD	-	38°5′38.5″N 74°16′58″E / 38.094028°N 74.28278°E

Al Madafi	Saudi Arabia	1	6	6-66 Ma	28°40′N 37°11′E / 28.67°N 37.18°E

Alamo bolide impact	United States (Nevada)	0	100 ± 40	367 Ma	37°19′N 116°11′W / 37.31°N 116.18°W

Anéfis	Mali	2	3.9	23? Ma	18°04′19″N 0°02′53″W / 18.072°N 0.048°W

Aorounga Central	Chad	0	11.6	<345 Ma	-	19°13′44″N 19°15′40″E / 19.229°N 19.261°E

Arganaty	Kazakhstan (Almaty region)	0	300	250 Ma	46°30′N 79°48′E / 46.5°N 79.8°E

Arlit	Niger	2	10	?	-	21°21′11″N 9°08′42″E / 21.353°N 9.145°E

Australian impact structure	Australia (Northern Territory)	Highly speculative	600	>545 Ma	25°33′S 131°23′E / 25.550°S 131.383°E

Azuara	Spain	1	35-40	30-40 Ma	-	41°07′N 0°13′W / 41.117°N 0.217°W

Bajada del Diablo	Argentina	2	40	450 ± 300 ka	42°46′S 67°24′W / 42.767°S 67.400°W

Bajo Hondo	Argentina (Buenos Aires Province)	2	3.9	<10 Ma	42°15′S 67°55′W / 42.250°S 67.917°W

Bangui magnetic anomaly	Central African Republic	2	600-800?	>542 Ma	Bangui anomaly.JPG	6°00′N 18°18′E / 6°N 18.3°E

Bateke Plateau	Gabon	3	7.1	<2.6	0°38′45″S 14°27′29″E / 0.64583°S 14.45806°E

Bedout	Australia (offshore)	2	250	250 Ma	18°S 119°E / 18°S 119°E

Bee Bluff	United States (Texas)	0	2.4	40? Ma	29°02′N 99°51′W / 29.03°N 99.85°W

Björkö	Sweden (Björkö, Ekerö)	1	10	1200 Ma	59°18′N 17°36′E / 59.30°N 17.60°E

Bloody Creek	Canada (Nova Scotia)	1	40	?	44°45′N 65°14′W / 44.750°N 65.233°W

Bohemian crater	Czech Republic	2	260-300	>700? Ma	50°00′N 14°42′E / 50.0°N 14.7°E

Bow City	Canada (Alberta)	2	8	70 Ma	50°25′N 112°16′W / 50.417°N 112.267°W

Bowers crater	Antarctic Ocean (Ross Sea)	2	100	3-5 Ma	71°12′S 176°00′E / 71.2°S 176°E

Brushy Creek Feature	United States (Louisiana)	1	2.0	11–30 ka	30°46′N 90°44′W / 30.76°N 90.73°W

Burckle	Indian Ocean	1	30?	3000 BC	30°52′S 61°22′E / 30.86°S 61.36°E

Catalina structures (Navy, Catalina, Emery Knoll)	Pacific Ocean (NE)	2	12, 32, 37	16-18 Ma	32°55′N 118°05′W / 32.91°N 118.09°W

Cerro do Jarau	Brazil (Paraná)	1	10	117 Ma	30°12′S 56°32′W / 30.200°S 56.533°W

Charity Shoal	Canada (Ontario)	2	1.2	<470 Ma	-	44°2′15″N 76°29′37″W / 44.03750°N 76.49361°W

Corossol	Canada (Quebec)	3	4	<470 Ma	50°03′N 66°23′W / 50.050°N 66.383°W

Darwin Crater	Tasmania	0	1.2	816 ka	-	42°19′S 145°40′E / 42.317°S 145.667°E

Decorah	United States (Iowa)	2	5.6	470 Ma	-	43°18′50″N 91°46′20″W / 43.31389°N 91.77222°W

Diamantina River ring feature	Australia (Queensland)	2	120	300 Ma	-	22°09′S 141°54′E / 22.150°S 141.900°E

Dumas magnetic anomaly	Canada (Saskatchewan)	1	3.2	70 ± 5 Ma	49°55′N 102°07′W / 49.92°N 102.12°W

Duolun	China (Inner Mongolia)	2	120 ± 50	129 ± 3 Ma	-	42°3′N 116°15′E / 42.050°N 116.250°E

El-Baz	Egypt	1	4	?	-	24°12′N 26°24′E / 24.200°N 26.400°E

Eltanin	Pacific Ocean (SE)	0	35?	2.5 Ma	57°47′S 90°47′W / 57.783°S 90.783°W

Faya Basin	Chad	1	2	385 ± 15 Ma	18°10′N 19°34′E / 18.167°N 19.567°E

Falkland Plateau anomaly	Atlantic Ocean (near Falkland Islands)	2	250-300	250 Ma	51°S 62°W / 51°S 62°W

Fried Egg structure	Atlantic Ocean (near Azores)	2	6	17 Ma	36°N 27°W / 36°N 27°W

Garet El Lefet	Libya	1	3	?	25°00′N 16°30′E / 25.0°N 16.5°E

Gatun structure	Panama	1	3	20 Ma	09°05′58″N 79°47′22″W / 9.09944°N 79.78944°W

General San Martín	Argentina	2	11	1.2 Ma	38°0′S 63°18′W / 38.000°S 63.300°W

Gnargoo	Australia (Western Australia)	1	75	<300 Ma	24°48′24″S 115°13′29″E / 24.80667°S 115.22472°E

Guarda	Portugal	1	30	200 Ma	40°38′N 07°06′W / 40.633°N 7.100°W

Hartney anomaly	Canada (Manitoba)	1	8	120 ± 20 Ma	49°24′N 100°40′W / 49.4°N 100.67°W

Hiawatha	Greenland	2	31	<1985	Hiawatha v45 scene1 4k 5mtopo.1760.tif	78°44′N 66°14′W / 78.733°N 66.233°W

Hickman	Australia (Western Australia)	2	30	10–100 ka	23°2′13″S 119°40′59″E / 23.03694°S 119.68306°E

Hico	United States (Texas)	1	9	<60 Ma	32°01′N 98°02′W / 32.01°N 98.03°W

Hotchkiss	Canada (Alberta)	1	4	220 ± 100 Ma	57°32′20″N 118°52′41″W / 57.539°N 118.878°W

Howell	United States (Tennessee)	1	2.5	380 ± 10 Ma	35°14′N 86°37′W / 35.23°N 86.61°W

Ibn-Batutah	Libya	2	2.5	120 ± 20 Ma	21°34′10″N 20°50′15″E / 21.56944°N 20.83750°E

Ishim	Kazakhstan (Akmola region)	0	300	430-460 Ma	52°0′N 69°0′E / 52.000°N 69.000°E

Iturralde	Bolivia	1	8.0	11–30 ka	-	12°35′S 67°40′W / 12.583°S 67.667°W

Jackpine Creek magnetic anomaly	Canada (British Columbia)	1	25	120 ± 20 Ma	55°36′N 120°06′W / 55.6°N 120.1°W

Jebel Hadid	Libya	2	4.7	<66 Ma	20°52′12″N 22°42′18″E / 20.87000°N 22.70500°E

Jeptha Knob	United States (Kentucky)	0	4.3	425 Ma	38°11′N 85°07′W / 38.183°N 85.117°W

Johnsonville	United States (South Carolina)	0	11	300? Ma	33°49′N 79°22′W / 33.817°N 79.367°W

Jwaneng South	Botswana	2	1.3	<66 Ma	24°42′S 24°46′E / 24.700°S 24.767°E

Luna	India	2	2.1	4.0 ka 2000 BC	23°42′17″N 69°15′37″E / 23.70472°N 69.26028°E

Kebira	Egypt	2	31	100 Ma	-	24°40′N 24°58′E / 24.667°N 24.967°E

Kilmichael	United States (Mississippi)	1	13	45 Ma	33°30′N 89°33′W / 33.5°N 89.55°W

Krk structure	Croatia	2	12	40 Ma	45°04′N 14°37′E / 45.06°N 14.62°E

Kurai Basin	Russia (Altai Region)	1	20	<200 Ma	50°12′N 87°54′E / 50.200°N 87.900°E

La Dulce	Argentina	1	2.8	445? ka	38°13′S 59°13′W / 38.21°S 59.21°W

Labynkyr	Russia	0	67	150? Ma	62°19′30″N 143°05′24″E / 62.325°N 143.090°E

Lac Iro	Chad	1	13	?	-	10°10′N 19°40′E / 10.167°N 19.667°E

Lairg Gravity Low	Scotland	2	40	1200 Ma	58°1′12″N, 4°24′0″W

Lake Cheko	Russia (Siberia)	3	50	1908 AD	60°57′50″N 101°51′36″E / 60.964°N 101.86°E

Lake Tai (Tai Hu)	China (Jiangsu)	1	70 ± 5	365 ± 5 Ma	31°14′N 120°8′E / 31.233°N 120.133°E

Loch Leven	Scotland	2	18x8	290 Ma	56°12′N 3°23′W / 56.200°N 3.383°W

Lorne Basin	Australia (New South Wales)	2	30	250 ± 2 Ma	31°36′S 152°37′E / 31.60°S 152.62°E

Lycksele structure 2	Sweden	2	130	1500 ± 300 Ma	64°55′N 18°47′E / 64.92°N 18.78°E

Madagascar structure 3	Madagascar	4	12	?	18°50′20″S 46°13′16″E / 18.839°S 46.221°E

Magyarmecske anomaly	Hungary	1	7	299 Ma	45°57′N 17°58′E / 45.95°N 17.97°E

Mahuika	New Zealand (offshore)	2	20?	0.6 ka 1400 AD	48°18′S 166°24′E / 48.3°S 166.4°E

Maniitsoq structure	Greenland	2	100	3000 Ma	65°15′N 51°50′W / 65.250°N 51.833°W

Mejaouda (El Mrayer)	Mauritania	1	3	<542? Ma	22°43′19″N 7°18′43″W / 22.722°N 7.312°W

Merewether	Canada (Newfoundland)	0	20	0.9 ka 1100 AD	58°02′N 64°03′W / 58.04°N 64.05°W

Meseta de la Barda Negra	Argentina	1	1.5	4 ± 1 Ma	39°10′S 69°53′W / 39.167°S 69.883°W

Middle-Urals Ring Structure	Russia	1	400–550	>542 Ma	56°N 56°E / 56°N 56°E

Mistassini-Otish impact structure	Canada (Quebec)	1	600	2200 Ma	50°34′N 73°25′W / 50.57°N 73.42°W

Mount Ashmore dome	Indian Ocean (in Timor Sea)	2	>50	35 Ma	12°33′S 123°12′E / 12.55°S 123.2°E

Mousso	Chad	2	3.8	<542 Ma	17°58′N 10°53′E / 17.967°N 10.883°E

Mt. Oikeyama	Japan	2	90	30? ka	35°24′18″N 138°00′47″E / 35.405°N 138.013°E

Mulkarra	Australia (South Australia)	1	17	105 Ma	27°51′S 138°55′E / 27.85°S 138.92°E

Nastapoka (Hudson Bay) arc	Canada (Quebec)	3	450	1800? Ma	-	57°00′N 78°50′W / 57.000°N 78.833°W

Ouro Ndia	Mali	2	3	<2.6 Ma	14°59.8′N 4°30.0′W / 14.9967°N 4.5000°W

Pantasma	Nicaragua	3	10	?	13°22′N 85°57′W / 13.37°N 85.95°W

Panther Mountain	United States (New York)	1	10	375 Ma	-	42°03′N 74°24′W / 42.050°N 74.400°W

Peerless structure	United States (Montana)	1	6	470 ± 10 Ma	48°48′N 105°48′W / 48.8°N 105.8°W

Piratininga	Brazil (Paraná)	3	12	117 Ma	22°28′S 49°09′W / 22.467°S 49.150°W

Praia Grande	Brazil (Santos Basin, offshore)	1	20	84 Ma	25°39′S 45°37′W / 25.650°S 45.617°W

Ramgarh	India (Rajasthan)	0	3	?	Ramgarh Crater.JPG	25°20′16″N 76°37′29″E / 25.33778°N 76.62472°E

Ross	Antarctic Ocean (Ross Sea)	2	600?	<38 Ma	77°30′S 178°30′E / 77.5°S 178.5°E

Rubielos de la Cérida	Spain	0	80x40	30-40 Ma	-	40°46′59″N 1°15′00″W / 40.783°N 1.25°W

Sakhalinka	Pacific Ocean (NW)	2	12	70 Ma	30°15′N 170°03′E / 30.250°N 170.050°E

São Miguel do Tapuio	Brazil (Piauí)	1	22	120 Ma	5°37.6′S 41°23.3′W / 5.6267°S 41.3883°W

Shanghewan	China (Jilin)	1	30	?	44°29′N 126°11′E / 44.483°N 126.183°E

Shiva	Indian Ocean	1	500	66 Ma	18°40′N 70°14′E / 18.667°N 70.233°E

Shiyli	Kazakhstan	0	5.5	46 ± 7 Ma	49°10′N 57°51′E / 49.167°N 57.850°E

Silverpit	Atlantic Ocean (North Sea)	1	20	60 ± 15 Ma	-	54°14′N 1°51′E / 54.233°N 1.850°E

Sirente	Italy	4	10	1.7 ka 320 ± 90 AD	42°10′38″N 13°35′45″E / 42.17722°N 13.59583°E

Sithylemenkat Lake	United States (Alaska)	3	12	33? ka	66°07′34″N 151°23′20″W / 66.12611°N 151.38889°W

Smerdyacheye Lake	Russia	1	20	10–30? ka	55°44′06″N 39°49′23″E / 55.735°N 39.823°E

Sudan 3 (Mahas)	Sudan	2.8	?	-	20°01.9′N 30°13.7′E / 20.0317°N 30.2283°E

Sudan 2 (Bayuda)	Sudan	2	10	?	A map of Sudan showing three cratersMahasBayudaRed Sea Hills Three craters in Sudan	18°03.5′N 33°30.2′E / 18.0583°N 33.5033°E

Sudan 1 (Red Sea Hills)	Sudan	2	6	?	A map of Sudan showing three cratersMahasBayudaRed Sea Hills Three craters in Sudan	17°57.1′N 37°56.1′E / 17.9517°N 37.9350°E

Svetloyar Lake	Russia	0	40	2.6 ka 600 BC	56°49′08″N 45°05′35″E / 56.819°N 45.093°E

Takamatsu	Japan	1	4-8	15 Ma	34°18′N 134°03′E / 34.3°N 134.05°E

Tarek (Gilf Kebir)	Egypt	3	2.1	112? Ma	24°36′04″N 27°12′18″E / 24.601°N 27.205°E

Tatarsky North	Pacific Ocean (NW)	2	14	?	49°57′35″N 141°23′40″E / 49.95972°N 141.39444°E

Tatarsky South	Pacific Ocean (NW)	2	20	?	48°17′38″N 141°23′40″E / 48.29389°N 141.39444°E

Tefé River structure	Brazil (Amazonas)	2	15	65 ± 20 Ma	4°57′S 66°03′W / 4.950°S 66.050°W

Talundilly	Australia (Queensland)	1	84	128 ± 5 Ma	24°44′S 144°37′E / 24.73°S 144.62°E

Temimichat	Mauritania	1	0.7	2? Ma	24°15′N 9°39′W / 24.250°N 9.650°W

Tsenkher	Mongolia	1	3.6	5 Ma	43°38′41″N 98°22′09″E / 43.64472°N 98.36917°E

Toms Canyon	United States (New Jersey)	1	22	35 Ma	39°08′N 72°51′W / 39.133°N 72.850°W

Umm al Binni	Iraq	0	3.4	<5.0 ka 3000 BC	31°14′29″N 47°06′21″E / 31.24139°N 47.10583°E

Ust-Kara	Russia (Nenetsia, offshore)	2	25	70 ± 2.2 Ma	-	69°17′N 65°21′E / 69.28°N 65.35°E

Vélingara	Senegal	1	48	23-40 Ma	-	13°02′N 14°08′W / 13.033°N 14.133°W

Versailles	United States (Kentucky)	1	1.5	<400 Ma	38°05′N 84°40′W / 38.09°N 84.67°W

Vichada	Colombia (Vichada)	2	50	30? Ma	-	4°30′N 69°15′W / 4.500°N 69.250°W

Victoria Island	United States (California)	2	5.5	37-49 Ma	37°53′N 121°32′W / 37.89°N 121.53°W

Warburton East	Australia (South Australia)	2	200	300-360 Ma	28°00′S 140°30′E / 28°S 140.5°E

Warburton West	Australia (South Australia)	200	300-360 Ma

Weaubleau	United States (Missouri)	1	19	330 ± 10 Ma	-	38°00′N 93°36′W / 38.0°N 93.6°W

Wembo-Nyama (Omeonga)	DR Congo	2	36-46	60? Ma	-	3°37′52″S 24°31′07″E / 3.63111°S 24.51861°E

Wilkes Land 2	Antarctica	2	480	250-500 Ma	-	70°S 140°E / 70°S 140°E

Woodbury	United States (Georgia)	1	7	500 ± 100 Ma	32°55′N 84°33′W / 32.92°N 84.55°W

Yallalie	Australia (Western Australia)	0	12	99? Ma	30°26′40″S 115°46′16″E / 30.44444°S 115.77111°E

Zerelia West	Greece	2	20	7.0 ka 5000 BC	-	39°09′48″N 22°42′32″E / 39.16333°N 22.70889°E

Zerelia East	Greece	2	10	7.0 ka 5000 BC	39°09′43″N 22°42′51″E / 39.16194°N 22.71417°E

Sentence(s)

Loch Leven is an impact structure on earth.

final_sentence: Loch Leven is an impact structure on earth.