Rehwinkel's The Flood posits a vast number of disasters all hitting at once, causing the Genesis Flood, which was the will of God.
Although Velikovsky can be weird and rationalistic, I appreciate his willingness to view the past as chaotic rather than immutable.
There's a hint in Velikovsky's 'Worlds In Collision' this event took place within historical times. He quotes Strabo, 'The Geography':
"Having recovered his strength Zeus suddenly from heaven riding in a chariot of winged horses, pelted Typhon with thunderbolts...So being again pursued he (Typhon) came to Thrace and in fighting at Mount Haemus he heaved whole mountains...a stream of blood gushed out on the mountain, and they say that from that circumstance the mountain was called Haemus (bloody). And when he started to flee through the Sicilian sea, Zeus cast Mount Etna in Sicily upon him. That is a huge mountain, from which down to this day they say that blasts of fire issue from the thunderbolts that were thrown.'
Indeed the more chaotic the ancient past, the better to explain why mankind got so little traction for so many thousands of years, despite the excellent brains installed well before 8000 BC.