Horizon

{
  "id": "MLC-T-OAG-001851",
  "term": "Horizon",
  "field": "Oil and gas",
  "definition": "A specific stratigraphic level or boundary within a rock sequence that serves as a marker for geological mapping and correlation. It represents a distinct change in lithology, fossil content, or depositional environment, identifiable in well logs, seismic data, or outcrops. Key horizons are used to delineate reservoir zones, define structural features, and guide exploration efforts.",
  "subject": "Geology",
  "url": "https://mlchart.com/terminology/oil-and-gas/horizon/"
}