Shale

{
  "id": "MLC-T-ENV-025382",
  "term": "Shale",
  "field": "Environment",
  "definition": "1. A fine-grained sedimentary rock composed mostly of consolidated clay or mud. Shale is the most frequently occurring sedimentary rock.\n\n2. Sedimentary rock derived from mud. Commonly finely laminated (bedded). Particles in shale are commonly clay minerals mixed with tiny grains of quartz eroded from pre-existing rocks.\n\n3. A laminated sediment, in which the constituent particles are predominantly of the clay grade.\n\n4. Natural gas produced from wells that are open to shale formations. Shale is a fine-grained, sedimentary rock composed of mud from flakes of clay minerals and tiny fragments (silt-sized particles) of other materials. The shale acts as both the source and the reservoir for the natural gas. See natural gas [Original source: https://www.eia.gov/tools/glossary].",
  "subject": "Chemicals, toxics and pesticides",
  "references": [
    "Glossary: Study of the Potential Impacts of Hydraulic Fracturing on Drinking Water Resources; EPA Draft Plan to Study the Potential Impacts of Hydraulic Fracturing on Drinking Water Resources Glossary at www.yosemite.gov/sab",
    "USGS Geology in the Parks Glossary",
    "IRS Coal Excise Tax - Appendix I, Glossary of Mining Terms",
    "Federal LCA Commons Elementary Flow List for Life Cycle Assessment"
  ],
  "url": "https://mlchart.com/terminology/environment/shale/"
}