List of impact craters in North America

Columns: Name | Location | Diameter ( km ) | Age ( years ) | Probability
Alamo bolide impact | Nevada , USA | unknown | 367 million | Bow City | Alberta | 8 km | 70 million | Corossol | Quebec | 4 km | 2.6 million | Decorah crater | Iowa , USA | 5.6 | 470 million | 2 ( probable ) | Gatun structure | Panama | 2.7-3.0 | 20 million | 2 ( probable ) | Pantasma | Nicaragua | 10 | 1 million | 4 ( not probable ) | Jeptha Knob | Kentucky , USA | 4.3 | 425 million | 2 ( probable )

Example questions:
The North American impact crater that is 22 km wide was formed during which geological time period ? | The North American impact crater that is 4 km wide is found in which body of water ? | The North American impact crater that is 375 million years old is located in what town ? | The North American impact crater that is 470 million years old was likely caused by a meteor how many metres wide ? | The North American impact crater that is 20 million years old was discovered in 1972 by which scientist ?

Answers:
late Eocene | Gulf of Saint Lawrence | Shandaken | 200 | Bob Stewart