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High-frequency
cycle "cycle"
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high-frequency cycle "cycle" is the smallest set of genetically
related facies deposited during a single base-level cycle. Cycles are comparable
to and often equivalent to the "parasequence". Cycle boundaries
mark the turnaround from base-level fall to base-level rise (a period of
time during which sea level rises from a highstand position, through a lowstand,
and returns to a highstand).
Cycles can be mapped across multiple facies tracts and include multiple
vertical facies successions (VFS) and are therefore chronostratigraphic
units. (Kerans & Tinker, 1997, Mitchum & Van Wagoner,1991). |
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