In NA there's evidence of at least 3 supercontinental assembly episodes. In the Pacific (since all the past supercontinents faced the sea, their area assemblies are maybe even more(not sure how recent evidence is interpreted as of yet).
The method of age dating supercontinental collisions is by a technique based on "Wilson ccycles" and we look at "mantle depletion" rather than age dating crustal rocks (since crustal sedimentary rocks collect and incorporate all ages of previous supercontinents.
The most useful isotopic method for mantle depletion analyses is Samarium/neodymium age dating.
The supercontinents , from the earliest at about 2.2 Billion years was COLUMBIA, then RODINIA and lastly PANGEA.
So, to complicate RL's life, we have very good evidence of mantle accretion events of continents banging into each other and mountain building and erosion, at least 3 times since his Flood.(this, using his logic)
Based on the evidence then, some wag in the Canadin geo survey, AAUMING THAT THERE WAS A fLOOD, computed a Wilson cycle continental drift speed of about 7 miles per hour.
Hell , if that were true, C.I. wouldnt have to buy plane tickets to do his globe hopping. He could just find a nice piece of real estate and cruise on it.
Right now, if 7 mph isnt too slow ci, your next Alaskan junket could be taken by just taking a hotel room at the Transamerica in SF and wait till the plate winds up in Anchorage in about , lessee 7mph , about 2000 mi. CI would get to Anchorage from SFin about 12 days, by hitching a ride on Cunards" Pacific Plate Tectonocruise" Lines. . lotsa no evidence to support rl's flood story.