The Great Unconformity

Dave Kirkeby

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Published 2014-07-05

ASU research professor Duane DeVecchio describes the Great Unconformity in the Grand Canyon near the Bright Angel Trail

All Comments (4)

@bob_frazier 3 years ago

Thanks Dave! You just answered my questions.
@JediMaddy94 4 years ago

Great video, so sorry about those other comments. You did good.
@PorscheSC 3 years ago

Is Genesis History. If you want the truth take a listen to truth