Sudbury Basin
second largest verified astrobleme on earth, remain of an Paleoproterozoic Era impact / From Wikipedia, the free encyclopedia
The Sudbury Basin [1] is a major geologic structure in Ontario, Canada. It is the second-largest verified impact crater on Earth, as well as one of the oldest.[2][3]
The basin is on the Canadian Shield in the city of Greater Sudbury, Ontario. The Sudbury Basin is referred to locally as "The Valley". The urban core of the former city of Sudbury lies on the southern outskirts of the basin.
The Sudbury Basin is near a number of other geological structures. None of the structures are directly related to each other in the sense of coming from the same geophysical processes.