lignitic group
Laramie group Lar"a*mie group` . (Geol.) An extensive series of strata, principally developed in the Rocky Mountain region, as in the Laramie Mountains, and formerly supposed to be of the Tertiary age, but now generally regarded as Cretaceous, or of intermediate and transitional character. It contains beds of lignite, often valuable for coal, and is hence also called the {lignitic group}. See Chart of {Geology}. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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  • Lignitic group — Lignitic Lig*nit ic (l[i^]g*n[i^]t [i^]k), a. Containing lignite; resembling, or of the nature of, lignite; as, lignitic clay. [1913 Webster] {Lignitic group}. See {Laramie Group}. [1913 Webster] …   The Collaborative International Dictionary of English

  • Lignitic — Lig*nit ic (l[i^]g*n[i^]t [i^]k), a. Containing lignite; resembling, or of the nature of, lignite; as, lignitic clay. [1913 Webster] {Lignitic group}. See {Laramie Group}. [1913 Webster] …   The Collaborative International Dictionary of English

  • Laramie group — Lar a*mie group . (Geol.) An extensive series of strata, principally developed in the Rocky Mountain region, as in the Laramie Mountains, and formerly supposed to be of the Tertiary age, but now generally regarded as Cretaceous, or of… …   The Collaborative International Dictionary of English

  • Lambeth Group — The Lambeth Group, also known as the Reading Beds and the Woolwich Beds, is a geological formation comprising a complex of vertically and laterally varying gravels, sands, silts and clays deposited between 56 55 million years before present… …   Wikipedia

  • Ranks of Coal as Classified by the American Society for Testing and Materials, Table — ▪ Table caloric value (moist, mineral matter free basis)* fixed carbon percentage volatile matter percentage British thermal megajoules (dry, mineral matter free basis) (dry, mineral matter free basis) units per pound …   Universalium

  • Bracklesham Beds — Bracklesham Beds, in geology, are a series of clays and marls, with sandy and lignitic beds, in the Middle Eocene of the Hampshire Basin, England.They are well developed in the Isle of Wight and on the mainland opposite; and receive their name… …   Wikipedia

  • Naturita Formation — The Naturita Formation was named by Robert G. Young (1960, 1965) for Cretaceous sedimentary rocks exposed near Naturita, Colorado. Naturita Formation exposed above the town of Naturita Colorado. The formation lies between the Cedar Mountain… …   Wikipedia

  • coal mining — Coal was very important in the economic development of Britain. It was used as fuel in the factories built during the Industrial Revolution and continued to be important until the 1980s. The main coalfields are in north east England, the north… …   Universalium

  • Rocky Mountains — the chief mountain system in North America, extending from central New Mexico to N Alaska. Highest peak, Mount McKinley, 20,300 ft. (6187 m). Also called Rockies. * * * or Rockies Mountain system, western North America. It extends some 3,000 mi… …   Universalium

  • vitrinite — n the predominant maceral in most coals of intermediate reflectance occurring as substantial volumes of more or less uniformly reflecting material or as a matrix enclosing particles of other macerals and mineral matter or as particles or bands… …   Coke&Coal Terminology

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