[decimon]

Being a bit geezerly I recall some speculations from decades ago. One was that ice ages do or can occur quickly.

Someone claimed there were fossils showing animals frozen while still eating. The reason for that was speculated to be the Earth shifting suddenly on its axis. That would of course mean a shifting of the frozen poles and not a general cooling of the planet.

[SunkenCiv]

In "Earth In Upheaval" Velikovsky discusses that, along with Russian Arctic islands nearly built out of millions of bones, various other paleontological evidence. More recently, Emilio Spedicato wrote, "We discuss the hypothesis that the last glaciation was started by a collision over a continent and was terminated by a collision over an ocean." My view differs from Spedicato.

[bigheadfred]

I’m all for the big catastrophe event. But not necessarily a collision event. Maybe a glancing blow event. I was watching something (last night?) about whether or not a glancing blow from a cannonball could/would kill you. Do the same for the Earth. Fly a good sized object by the Earth, but not Venus, close enough to rock your world, cause some tilt and/or magnetic displacement, big, big water displacement, quakes. Basically the “works”. It would cause all kinds of hard to figure readings in different fields of study. But no big crater.

And Decimon, one small addition. The claim is made that frozen animals were feeding on “fresh” green plants in their mouths, stomach contents. I don’t find that so hard to swallow. I think it happened to me just yesterday.