[TXnMA]

Here is one of the more clear-cut statements re the correlation between the Carolina Bays and this explosive event:

http://www.sciencenews.org/view/access/id/30552

A host of unusual geological features, collectively known as Carolina Bays, hints at the cataclysm's location, says team member George A. Howard, a wetland manager at Restoration Systems, an environmental-restoration firm in Raleigh, N.C. Around 1 million of these elliptical, sand-rimmed depressions, measuring between 50 meters and 11 kilometers across, scar the landscape from New Jersey to Florida. In samples taken from 15 of the features, Howard and his colleagues found iridium-rich magnetic grains and carbon spherules with tiny diamond fragments similar to those found at Clovis archaeological sites.

The long axes of the great majority of the Carolina Bays point toward locations near the Great Lakes and in Canada—a hint that the extraterrestrial object disintegrated over those locales, says Howard.e correlation between the Carolina Bays and this comet/asteroid event:

FWIW, I had no idea that there were nearly a million of those elongated crater features known as "Carolina Bays"...

[djf]

He has a website with some maps, and the longitudinal features mapped out. (about a quarter of the way down the page).

Looks like two loci for two separate events.

http://www.georgehoward.net/cbays.htm

Oddly, I last week took a bit of a fascination with this stuff, stirred up a bit by Yellowstone.

[neverdem]

Ice Age Ends Smashingly: Did a comet blow up over eastern Canada?

Here's a better link for the excerpt in comment 69.