Be generous. Go on. Share a Fact or two.

[PointyHairedJedi]

Originally Posted by Zeke

Really? I always thought it was the Beatles. (Or the Quarrymen if you want to be picky.)

No, they definitely aren't gneiss at all. Unlike gneiss, which is gneiss, even though it was either completely igneous or a bit sedimentary beforehand.

Another gneiss fact: The oldest known crustal rocks in the world is the Acasta gneiss outcrop in Canada's Northwest Territories which is in the region of four billion years old.