argillaceous siderite

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Fort St. John Group — Stratigraphic range: Lower Cretaceous … Wikipedia
sedimentary rock — Rock formed at or near the Earth s surface by the accumulation and lithification of fragments of preexisting rocks or by precipitation from solution at normal surface temperatures. Sedimentary rocks can be formed only where sediments are… … Universalium
Mannville Group — Stratigraphic range: Early Cretaceous … Wikipedia
Hamilton Group — or Millboro Shale Stratigraphic range: Middle Devonian Type Geological unit Sub units Mahantango Formation Marcellus Formation Thickness up to 2,500 feet (800 m) … Wikipedia
Alberta Group — Stratigraphic range: Albian to Campanian … Wikipedia
Mudrock — Glacial Lake Missoula claystone Red mudrock in the Ragged Reef Formation ( … Wikipedia

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