highstand systems tract | Energy Glossary

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highstand systems tract

1. n. []

A systems tract bounded below by a downlap surface and above by a sequence boundary, commonly abbreviated as HST. This systems tract is characterized by an aggradational to progradational parasequence set.

See: lowstand systems tractmaximum flooding surfaceparasequenceparasequence setsequence boundarysequence stratigraphysystems tract