Retrogradation

{
  "id": "MLC-T-OAG-003145",
  "term": "Retrogradation",
  "field": "Oil and gas",
  "definition": "The landward shift of a shoreline and its facies belts, so that each younger unit is deposited farther toward the land than the one below it. It happens when relative sea-level rise outpaces sediment supply, and it builds a backstepping stack of parasequences in a transgressive systems tract. It is the opposite of progradation, in which deposits step seaward.",
  "subject": "Geology",
  "url": "https://mlchart.com/terminology/oil-and-gas/retrogradation/"
}