“A ‘mile-wide asteroid’ would have don a lot more damage.”
If the boloid were of the fluffy snowball type described in “The Cycle of Cosmic Catastrophes,” by Firestone et al. it could still have killed a lot of people, but left a less severe trace. Incidentally, there was a possible boloid strike in Greenland around 1999 (?), does anyone know if they ever found any traces of this impactor?
I don’t think this latest interpretation is correct anyway :’) — not *least* because of the Sodom and Gomorrah dating error.