Glossary


Sequence Stratigraphy

Accomodation Space Accommodation Space refers to the space available for deposition (closely connected to relative sea level in shallow marine environments)    
Agradation/Agradational      
Downlap      
Falling-stage (forced regressive) Systems Tract (FSST)      
Flooding Surface/Event      
Forced Regression      
High stand System Tract (HST)      
Lowstand System Tract (TST)      
Maximum Flooding Surface (mfs) Maximum flooding surfaces form during the culmination of relative sea-level rise, and the maximum landward translation (flooding) of the shoreline, and constitute the stratigraphic surface that separates the Transgressive System Tract (TST) and the overlying Highstand Systems Tract (HST)    
Offlap      
Onlap      
Parasequence Parasequences are stratal units of a lower order than sequences, separated by (marine) flooding surfaces    
Progradation/Progradational      
Regression/Regressive      
Retrogradation      
Sequence A depositional sequence is a stratigraphic unit bounded at its top and base by unconformities or their correlative conformities    
Sequence Boundary (SB) Sequence boundaries are the key stratigraphic surfaces that separate successive sequences    
Still-stand      
Toplap      
Transgression/Transgressive      
Transgressive Surface (TS) Marine-flooding surface that forms first significant flooding surface in a sequence - often marking base of most prominent onlap    
Transgressive System Tract (TST)      
Unconformity