Cataclasite

{
  "id": "MLC-T-OAG-000585",
  "term": "Cataclasite",
  "field": "Oil and gas",
  "definition": "A cohesive, fine-grained fault rock formed by brittle deformation and comminution of pre-existing rocks, without macroscopic foliation. It consists of angular rock fragments and mineral grains in a fine-grained matrix, resulting from intense fracturing and grinding along fault zones. Cataclasites can act as barriers or conduits to fluid flow in hydrocarbon reservoirs, depending on their degree of cementation and fracture density.",
  "subject": "Geology",
  "url": "https://mlchart.com/terminology/oil-and-gas/cataclasite/"
}