Hiatal

{
  "id": "MLC-T-OAG-001818",
  "term": "Hiatal",
  "field": "Oil and gas",
  "definition": "Relating to a hiatus, which is a break or gap in the geologic record where a rock unit is absent due to a period of non-deposition or erosion. A hiatal surface, such as an unconformity, separates younger rocks from significantly older ones, representing a period of missing geologic time. The duration of the hiatus is the time difference between the age of the strata immediately below and immediately above the surface of discontinuity.",
  "subject": "Geology",
  "url": "https://mlchart.com/terminology/oil-and-gas/hiatal/"
}