The original Brexit!
https://www.sciencemag.org/news/2017/04/original-brexit-how-tremendous-ice-age-waterfalls-cut-britain-europe

Some geologists posit that the only way to generate the energy for such volumes of meltwater would be by an impact. eg akin to the much later Firestone event and the Pleistocene megafauna wipeout.

Lyell and Uniformitarianism is increasingly being shown to be a myth,
unlike compo aggravating global warming with all the hot air he produces.