parasequence | Energy Glossary

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1. n. []

Relatively conformable depositional units bounded by surfaces of marine flooding, surfaces that separate older strata from younger and show an increase in water depth in successively younger strata. Parasequences are usually too thin to discern on seismic data, but when added together, they form sets called parasequence sets that are visible on seismic data.

See: depositional environmentflooding surfacesequence stratigraphystratum