And also probably also formed Lake Michigan, and the Carolina Bays formed by great chunks of ice thrown south and east.
SC: time for “the Book.”
Ice Age Ends Smashingly: Did A Comet Blow Up Over Eastern Canada? (More) (Carolina Bays)
Good call. It’s been gettin’ a workout lately:
https://freerepublic.com/focus/chat/4134790/posts?page=19#19
https://freerepublic.com/focus/chat/4135444/posts?page=5#5
https://freerepublic.com/focus/chat/4136023/posts?page=5#5
https://freerepublic.com/tag/supernova/index