In sequence stratigraphy, each systems tract (lowstand, transgressive, highstand, falling-stage) is bounded by specific, genetically diagnostic stratigraphic surfaces that record particular combinations of relative sea-level change, sediment supply, and depositional/erosional processes.
The correct pairings are: (a) Top of the falling-stage systems tract corresponds to (iii) the subaerial unconformity, since forced regression during relative sea-level fall exposes...
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