Grace and peace,
Pat

You wrote:

Bro. Herrin, if we are to believe in a gap in which the dinosaurs had dominion of the earth and the pre-adamite races had their dominion etc, why would we assume that the hundreds of millions of years it takes for continents to float apart happened all at once after the flood. Is the mention of Peleg a foreshadow of the scattering of the peoples at Babel? Indeed, their fear was that they would be scattered abroad across the face of the whole earth. God merely mentions a confusing of the languages, not a cataclysmic parting of continents.
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The reason to “assume” that the continents were separated in the time of Peleg is that the Bible says it occurred them. Consider also that if the continents separated BEFORE the flood that there would be no way for land animals that were carried on the ark to spread throughout the world. They would have all ended up in Asia Minor where the mountains of Ararat are believed to be (Genesis 8:4).

When you cite a time period of millions of years for continental drift to take place, you are adopting the theories of geologists over the testimony of the Bible. Science would also deny that this present creation of the earth could have been formed in six days. They would suggest billions of years for evolution to take place and single cell organisms to become multi-cell organisms and eventually to form the wide variety of living things present today. If we are not constrained to accept science’s theories on evolution, then neither do we need to be bound by their theories on how long it took the continents to drift apart.

Regarding Peleg, he was five generations removed from Noah, and four generations from Noah’s son Shem. According to the genealogy of Genesis 11, Peleg was born 101 years after the flood and he lived 239 years. The Bible not only tells us that the earth was divided in Peleg’s day, but that Peleg was given his name because in his day the earth was divided (I Chronicles 1:19). The name Peleg means “earthquake.”

It has puzzled archaeologists to find pyramids, zodiacs, symbols, and even ancient alphabets that were geographically isolated from one another, sometimes on the other side of the world, but which were nearly identical to one another. There are numerous theories to explain such things. That some of these things belonged to a pre-Adamic earth is certainly one possibility.

Another possibility is that these civilizations were from before Noah's flood, or shortly thereafter when men began to multiply on the earth again. One Scripture people often overlook when considering such things is found in Genesis chapter 10.

Genesis 10:25
And two sons were born to Eber; the name of the one was Peleg, for in his days the earth was divided…

What is spoken about here occurred after the flood of Noah. The earth used to be one large continent, such as the Pangaea that is theorized by geologists. Because there was only one continent, this explains how the animals taken aboard Noah's ark were able to spread to all the various continents. They did not have to swim, as some have supposed, for all land was connected at that time. This also allowed for men to travel to all areas of the earth.

When the continents separated these various civilizations that had so much in common found themselves geographically dispersed.