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What are the types of unconformities than can occur in rock layers

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Nonconformities are unconformities that separate igneous or metamorphic rocks from overlying sedimentary rocks. They usually indicate that a long period of erosion occurred prior to deposition of the sediments (several km of erosion necessary). ... A nonconformity at the base of the Grand Canyon succession.
User Kinya
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The types of unconformities that can occur in rock layers are: ANGULAR, NONCONFORMITY and DISCONFORMITY.

User Darm
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