I believe it was speaking to the time of the great flood. Lots of plate activity during that time. (my interpretation)
You are referring, of course, to the younger Dryas event. I don’t know why Bible believers think that theirs is the only account of a huge flood to come down to us from ancient history. The flood myth is part of a group of myths that describe the end of the world from peoples all over the world in the thousands. We read of flood and destruction in Mayan records, Egyptian records, Chinese and Hindu stories, Icelandic and Nordic sagas, Babylonian epics, Native American lore, polynesian, Eskimos and Mongols, the list is endless. This is the most often told tale on the planet and thousands of ancient observers, bards and scribes didn’t just all make up the same story with the same plot line and cast of characters.
Younger Dryas.