Shale

{
  "id": "MLC-T-OAG-003349",
  "term": "Shale",
  "field": "Oil and gas",
  "definition": "A fine-grained, clastic sedimentary rock composed primarily of clay minerals and silt-sized particles, exhibiting fissility or the tendency to split into thin layers parallel to bedding. Shales often form in low-energy depositional environments, such as deep marine or lacustrine settings. They can act as hydrocarbon source rocks or seals.",
  "subject": "Geology",
  "url": "https://mlchart.com/terminology/oil-and-gas/shale/"
}