A parasequence is a fundamental concept of sequence stratigraphy. Parasequences are not directly related to sequences.
A parasequence is defined as a genetically related succession of bedsets that is bounded by marine flooding surfaces (or their correlative surfaces) on top and at the bottom. [1] The succession is supposed to be relatively conformable in the sense that breaks in deposition within the parasequence are much shorter than the time of deposition of the parasequence itself. [2] [1] Most parasequences show a shallowing upward, [3] which is sometimes also included into the definition. [4]
Since parasequences are relatively conformable, so Walther's law applies within a parasequence. This is not necessarily the case for transitions from one parasequence to another. They are also typically of the size of one up to tens of meters. [3]
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A parasequence is a fundamental concept of sequence stratigraphy. Parasequences are not directly related to sequences.
A parasequence is defined as a genetically related succession of bedsets that is bounded by marine flooding surfaces (or their correlative surfaces) on top and at the bottom. [1] The succession is supposed to be relatively conformable in the sense that breaks in deposition within the parasequence are much shorter than the time of deposition of the parasequence itself. [2] [1] Most parasequences show a shallowing upward, [3] which is sometimes also included into the definition. [4]
Since parasequences are relatively conformable, so Walther's law applies within a parasequence. This is not necessarily the case for transitions from one parasequence to another. They are also typically of the size of one up to tens of meters. [3]
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