Quote:
Originally Posted by creativedreams
I saw show on science channel (one of the learning channels) where scientists were on the Colorado river explaning rocks and that is what they have stated as fact and they added it has scientists baffeled.
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If I'm thinking of the right show, the writers just did a bad job of describing
the great unconformity.
Quote:
The Great Unconformity is important for three reasons:
* it represents a long span of time -- 250 to 1200 million years in the Grand Canyon;
* it is found nearly everywhere across the globe; and
* it divides rocks with familiar fossils from those with no fossils or only fossil bacteria.
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Note that 'nearly everywhere' is not the same as 'everywhere'. The writers probably skipped that distinction because the unconformity sounds cooler without it.