According to who? By YEC theory, all sedimentary rock was formed during the Noachian flood. There is no proportinal age difference to speak of among any of the sedimentary rock formations.
By their scale, that rock is 4,000 years old, and even the oldest non-sedimentary rock is only about 1.5 times that old.
That doesn't line up proportinally with conventional geology at all.
Success! You’ve proven yourself an idiot. (and a troll)