7 1: Relative Relationship Geosciences Libretexts
Disconformity, the place is a break or stratigraphic absence between strata in an otherwise parallel sequence of strata. The Phanerozoic strata in most of the Grand Canyon are horizontal. However, close to the bottom horizontal strata overlie tilted strata. This is called the Great Unconformity https://loveexamined.com/spicymatch-review/ and is an instance
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