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The document discusses geological stratigraphy and the different types of unconformities that can occur between rock strata, including nonconformity, disconformity, and angular unconformity. It also describes the key characteristics of each unconformity type and lists the steps in stratigraphic column construction, with the oldest layers numbered at the bottom.
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- 21. ( Facies )
- 25. Nonconformity
- 26. sinking
- 30. Disconformity's
- 31. Sinking
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