Falling stage systems tract (FSST) - includes all the regressional deposits that accumulated after the onset of a relative sea-level fall and before the start of the next relative sea-level rise. The falling stage systems tract is the product of a forced regression (one should not confused this with the sediments deposited during a normal regression). The FSST lies directly on the sequence boundary and is capped by the overlying lowstand systems tract sediments (see animated gif below & the Quicktime Movie to the left). A variety of parasequence stacking patterns can be produced including: downward stepping prograding clinoforms, stranded parasequences, and mass flow deposits in distal areas. Each of these parasequence stacking patterns depend on the depositional profile, the rate of sediment supply, and the rate of relative sea-level fall. The FSST was first fully defined by Plint and Nummedal, (2000). This systems tract has also been termed the early lowstand systems tract (ELST) (Posamentier and Allen, 1999).