• Thumbnail for Mudstone
    Mudstone, a type of mudrock, is a fine-grained sedimentary rock whose original constituents were clays or muds. Mudstone is distinguished from shale by...
    12 KB (1,219 words) - 16:51, 25 April 2024
  • Thumbnail for Mercia Mudstone Group
    The Mercia Mudstone Group is an early Triassic lithostratigraphic group (a sequence of rock strata) which is widespread in Britain, especially in the English...
    11 KB (1,305 words) - 16:37, 11 January 2024
  • Thumbnail for Mudrock
    Mudrock (section Mudstone)
    sedimentary rocks. The varying types of mudrocks include siltstone, claystone, mudstone and shale. Most of the particles of which the stone is composed are less...
    24 KB (3,243 words) - 16:42, 25 April 2024
  • Thumbnail for Exmoor Group
    order, i.e., the oldest at the base and the youngest at the top): Pilton Mudstone Formation (Pilton Beds, Pilton Shales) Baggy Sandstones Formation (Baggy...
    18 KB (2,176 words) - 08:23, 4 April 2024
  • The Llanfawr Mudstones is a geologic formation in Wales. It preserves fossils dating back to the Ordovician period. Earth sciences portal Wales portal...
    1 KB (59 words) - 18:39, 12 February 2024
  • Thumbnail for Aylesbeare Mudstone Group
    The Aylesbeare Mudstone Group is an early Triassic lithostratigraphic group (a sequence of rock strata) in southwest England. The name is derived from...
    4 KB (306 words) - 08:02, 23 April 2022
  • Thumbnail for Charmouth Mudstone Formation
    The Charmouth Mudstone Formation is a geological formation in England, dating to the Early Jurassic (Sinemurian–Pliensbachian). It forms part of the lower...
    34 KB (1,527 words) - 02:34, 7 January 2024
  • Thumbnail for Redcar Mudstone Formation
    The Redcar Mudstone Formation is a geological formation in North Yorkshire, England. Part of the Lias Group, it was deposited in the Hettangian to Pliensbachian...
    4 KB (186 words) - 22:51, 25 December 2023
  • Thumbnail for Ichthyotitan
    ichthyosaur from the Late Triassic (Rhaetian), known from the Westbury Mudstone Formation in Somerset, England. It is believed to be a shastasaurid, extending...
    18 KB (1,908 words) - 18:43, 28 April 2024
  • The Scunthorpe Mudstone is a geologic formation in England. It preserves plesiosaur fossils dating back to the Late Triassic (Rhaetian) to Early Jurassic...
    4 KB (217 words) - 23:17, 5 November 2023
  • Thumbnail for Whitby Mudstone
    The Whitby Mudstone is a Toarcian (Early Jurassic; Falciferum-Bifrons in regional chronostratigraphy) geological formation in Yorkshire and Worcestershire...
    12 KB (747 words) - 13:06, 5 January 2024
  • Thumbnail for Marros Group
    ‘Basal Grit’) which is overlain by the Bishopston Mudstone and the Telpyn Point Sandstone. The mudstones of these latter two formations was formerly known...
    5 KB (511 words) - 18:43, 12 October 2022
  • The Santa Cruz Mudstone is a geologic formation in California. The siliceous organic mudstones of the formation were deposited in deep water and fluvial...
    3 KB (214 words) - 19:49, 20 November 2022
  • Thumbnail for Marl
    the manufacture of cement. Marl or marlstone is a carbonate-rich mud or mudstone which contains variable amounts of clays and silt. The term was originally...
    24 KB (2,596 words) - 08:27, 22 December 2023
  • Pebbly Mudstone Island is a small island in the southeast part of Duroch Islands. It lies 0.6 kilometres (0.3 nmi) southwest of Halpern Point, Trinity...
    1 KB (98 words) - 01:00, 29 April 2022
  • The Duyfor Mudstone is a geologic formation in England. It preserves fossils dating back to the Ordovician period. Earth sciences portal England portal...
    1 KB (57 words) - 12:46, 11 February 2024
  • The Camnant Mudstone is a geologic formation in Wales. It preserves fossils dating back to the Ordovician period. Earth sciences portal Wales portal Paleontology...
    1 KB (57 words) - 02:36, 13 May 2023
  • Thumbnail for Aust Cliff
    part of the cliff is a red mudstone, with bands of nodules of pinkish-white alabaster. Above the red mudstone is green mudstone, followed by the Rhaetic...
    3 KB (187 words) - 12:20, 8 December 2023
  • The Bodeidda Mudstone is a geologic formation in Wales. It preserves fossils dating back to the Ordovician period. Earth sciences portal Wales portal Paleontology...
    1 KB (57 words) - 02:34, 13 May 2023
  • The Mugher Mudstone is a geologic formation located in Ethiopia. It dates to the Tithonian stage of the Late Jurassic. The lithology consists of gypsum...
    4 KB (297 words) - 02:02, 19 June 2023
  • Charmouth Mudstone Blue Lias In the East Midlands Shelf the Lias is divided into the following formations (from top to base): Whitby Mudstone Marlstone...
    5 KB (570 words) - 19:06, 3 September 2022
  • Formation Overlies Blue Anchor Formation Thickness 5-10 m Lithology Primary Mudstone, Shale Other Limestone, Sandstone Location Region Europe Country  UK Type...
    4 KB (261 words) - 06:12, 22 April 2024
  • The Crugan Mudstone is a geologic formation in England. It preserves fossils dating back to the Ordovician period. Earth sciences portal England portal...
    1 KB (57 words) - 11:25, 11 February 2024
  • The Haverford Mudstone is a geologic formation in Wales. It preserves fossils dating back to the Silurian period. Earth sciences portal Wales portal Paleontology...
    1 KB (57 words) - 18:12, 11 February 2024
  • The Redhill Mudstone is a geologic formation in Wales. It preserves fossils dating back to the Ordovician period. Earth sciences portal Wales portal Paleontology...
    1 KB (57 words) - 07:25, 3 July 2022
  • Thumbnail for Mount Everest
    metamorphism of Middle to Early Cambrian deep sea flysch composed of interbedded, mudstone, shale, clayey sandstone, calcareous sandstone, graywacke, and sandy limestone...
    233 KB (24,212 words) - 13:07, 22 April 2024
  • Thumbnail for Silurian
    Ordovician-Silurian boundary on Hovedøya, Norway, showing brownish late Ordovician mudstone and later dark deep-water Silurian shale. The layers have been overturned...
    57 KB (5,666 words) - 09:06, 22 April 2024
  • Stoneville Formation (cyclical red mudstone) Cow Branch Formation (cyclical fossiliferous black/dark grey mudstone with rare coarser lithologies) Dry...
    2 KB (170 words) - 11:28, 11 February 2024
  • Thumbnail for Lepidoptera
    190 million years ago, and known only from three wings found in the Charmouth Mudstone of Dorset, UK. The wings show scales with parallel grooves under a scanning...
    149 KB (16,831 words) - 04:23, 22 April 2024
  • Thumbnail for Tunnel boring machine
    (21.9 ft). The medium was water saturated sandy mudstone, schistose mudstone, highly weathered mudstone as well as alluvium. It achieved a maximum advance...
    34 KB (4,028 words) - 20:23, 24 April 2024