I, for one, don't think that the land bridge ever existed. I'll save that for another thread though.
Geology is tough to dispute. Plate Tectonics are a reality and proven. The "Land Bridge" is quite possibly the reason, when looking into the "Various Routes into the Americas".
I've also talked to people who are adamant that the Earth is only 14,000 years old. I show them a chunk of Banded Ironstone from the Upper Peninsula of Michigan. I tell them that "this Metamorphic Rock is 3.0 Billion Years old." Some of the oldest rock formations on this Earth are Banded Ironstone Formations. I'm a "rock hound" and hope to pass on my learnings to my son. Imagining the Appalachians in their heydey is garganutan to fathom. 27,000ft tall mountains now worn down to 6,000 ft in height.
For those in Oregon and Northern California, you can acquire the rarest of rocks. I forget the exact location, but you can get Glaucophane Schist. As most know, "Subduction of the sea floor creates the magma for the Cascade Region". Well, Blueschist or (Glaucophane Schist) forms when the Basaltic Ocean floor subducts under the N.A. Plate and it finds itself flipped on top of the N.A. Plate, in an violent counteraction.
I was in Oregon twice and forgot to grab a piece.
