Marcellus Shale Gas Fields

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USA Oil & Gas Fields

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Shale News

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Summary Information

  • Operator:
  • Country: USA
  • Location: West Virginia, Pennsylvania, and New York
  • Production start:
  • Partners:
  • Type: Gas
  • Estimated Reserves: 168-516 TCF
  • Production Volume:


  • The largest gas field in the USA
  • The Marcellus Shale is a unit of marine sedimentary rock found in eastern North America. Named for a distinctive outcrop near the village of Marcellus, New York, it extends throughout much of the Appalachian Basin. The shale contains largely untapped natural gas reserves
  • The Marcellus Shale extends from southern New York across Pennsylvania, and into western Maryland, West Virginia, and eastern Ohio


  • The Marcellus Shale formation is thought to be the second largest natural gas field in the world.
  • The Marcellus Shale contains about 84 trillion cubic feet of undiscovered, technically recoverable natural gas and 3.4 billion barrels of undiscovered, technically recoverable natural gas liquids according to an assessment by the U. S. Geological Survey (USGS).

Active Companies

  • Chesapeake Energy Corporation
  • Range Resources
  • CONSOL Energy has rights for 750,000 acres of Marcellus Shale



  • For information on Shale Gas
  • The Marcellus Shale forms the bottom or basal part of a thick sequence of Devonian age, sedimentary rocks in the Appalachian Basin. This sediment was deposited by an ancient river delta, the remains of which now form the Catskill Mountains in New York
  • The Marcellus Shale was deposited as an organic-rich mud across the Appalachian Basin before the influx of the majority of the younger Devonian sediments, and was buried beneath them.
  • The Marcellus is about a mile below the surface
  • The depth of the shale ranges between 4,000 and 8,500 with a thickness between 50 to 200 feet


  1. Go Marcellus Shale, All people, companies & places related to the Marcellus Shale
  2. Water Resources and Natural Gas Production from the Marcellus Shale
  3. The Department of Conservation and Natural Resources, Marcellus shale
  4. Marcellus Shale Research in Pennsylvania
  5. Consol Energy, Marcellus Shale
  6. WikiMarcellus
  7. NEOS Launches Geoscience Program in the Marcellus Shale
  8. USGS Releases New Assessment of Gas Resources in the Marcellus Shale, Appalachian Basin

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