Metamorphic

{
  "id": "MLC-T-OAG-002329",
  "term": "Metamorphic",
  "field": "Oil and gas",
  "definition": "Describing rocks that have undergone a transformation in their mineralogy, texture, or chemical composition due to intense heat, pressure, or chemical alteration. This process occurs deep within the Earth's crust, often associated with tectonic plate collisions or burial under thick sediment layers. Common metamorphic rocks include slate, marble, and gneiss, which can sometimes host hydrocarbon reservoirs if they retain sufficient porosity and permeability.",
  "subject": "Geology",
  "url": "https://mlchart.com/terminology/oil-and-gas/metamorphic/"
}