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• Penarth Group, Triassic, Northern Ireland
  ...th a distinctive striped appearance caused by siltstone laminae. Above the Cotham Member, and below the base of the succeeding ''Pre-planorbis'' beds, the Langport
  4 KB (535 words) - 12:53, 25 September 2017
• Penarth Group, Permo-Triassic, Bristol and Gloucester region
  ...lstock Formation comprises a lower argillaceous unit, the Cotham Beds (now Cotham Member) and an upper dominantly limestone unit, the Langport Beds (now Langport Me ...thickness of the member is rarely more than 2 m. The location of the Cotham Member, and to some extent of the Westbury Formation also is, however, of importan
  8 KB (1,341 words) - 13:30, 30 January 2018
• Permian—Triassic of Wales
  ...16202.jpg|(P916202)]]. The junction between the Westbury Formation and the Cotham Member is sharp and locally channelled, up to 40 cm deep, indicating uplift a ...ies records the final marine inundation of the lagoonal environment of the Cotham Member. The overlying calcareous mudstone was deposited in a shallow marine, offsh
  20 KB (3,008 words) - 09:53, 5 May 2016
• Permo-Triassic, its classification and conditions of deposition, Bristol and Gloucester region
  ...lves, associated with echinoids, ophiuroids and gastropods. The succeeding Cotham Member of the Lilstock Formation marks the establishment of a shallow sea with a c
  11 KB (1,778 words) - 13:31, 30 January 2018
• OR/12/032 Geohazards
  ...th cambering of Blue Lias Formation limestones over Westbury Formation and Cotham Member (Penarth Group) clays and mudstones, and Mercia Mudstone Formation. The gul
  69 KB (9,796 words) - 09:48, 29 November 2019