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  •, Marcellus, and [ Upper Devonian Shale], which is where the majority of production comes from in the Appalachian B [[File:Marcellus-Shale-within-the-Appalachian-Basin.png|thumb]]
    13 KB (1,899 words) - 15:17, 5 May 2020
  • ...mum principal stress has always been vertical. This situation is common in shale resource areas. ...MonoclinicJtsUticaShlO.jpg|400px|thumb|left|Monoclinic joints in the Utica Shale, Ohio]]
    2 KB (296 words) - 08:03, 15 September 2020
  • ...ert as well as Silurian carbonic rock or chert, the Ordovician Collingwood shale, the Ordovician Foster Formation of primarily carbonic rock or chert, and t ...tion. Other unconventional plays that have seen increased interest are the Utica-Collingwood in Northern Michigan, the A1 Carbonate in Mid and West Michigan
    10 KB (1,565 words) - 12:02, 11 May 2021