The purpose of GAE seems to be to interpret the story of Adam and Eve literally, but in a way that brings it into as little conflict as possible with science, in order to show YECs that they can accept both the Bible and science. Is it possible to extend this approach to the Noahic Flood and the rest of Genesis 1-11? Unlike a genealogical Adam and Eve, it seems that a large flood that killed all of Adam’s descendants except Noah’s family would have left some evidence.
There are some interesting clues for a concordist interpretation of Gen 4-10. There was a Y-chromosome bottleneck from about 10-5 kya, which is thought to have been caused by increased violence between patrilineal clans (Karmin et al. 2015; Zeng et al. 2018). This fits with the biblical description of the antediluvian world, which was “filled with violence” and had warriors, patriarchy, and polygamy (Gen 3:16; 4:23f; 6:4, 11). I see that when this topic was bought up on the forum before, some people made the same connection.
There was also a major flooding event in the Arabian peninsula, which stretched as far northeast as Damascus and as far northwest as southern Mesopotamia (Bastawesy 2015). But this seems to not stretch far enough north, and is also too early (dated to 8.5 kya) to be after the Y-chromosome bottleneck. Dickin (2015) argues that there is evidence for a Mesopotamian flood around 7.7 kya, but his evidence is more tenuous and may not point to a single flooding event.
Finally, the account of the Table of Nations (Gen 10) may be corroborated by the genetic and archeological evidence for a migration from eastern Anatolia (the ark’s resting place?) into Europe and north Africa. The first wave of migration is dated to about 8.2 kya, which is the right timing for the Arabian flood (8.5 kya), but too early for both the Mesopotamian flood (7.7 kya?) and the Y-chromosome bottleneck (10-5 kya).
In summary, there seems to be evidence for all the aspects of the Gen 4-10 account, but the dating of these elements is out of line from what the primeval history records. To other CASEs here (@swamidass @Jordan @gbrooks9 @AllenWitmerMiller @deuteroKJ) would any of you like to weigh in? How can we explain the Noahic flood and surrounding narrative using the GAE approach?