• Thumbnail for Portland stone
    Portland stone is a limestone geological formation (formally named the Portland Stone Formation) dating to the Tithonian age of the Late Jurassic that...
    25 KB (3,004 words) - 19:19, 9 April 2024
  • Thumbnail for Portland cement
    inventor of "modern" portland cement due to his developments in the 1840s. The low cost and widespread availability of the limestone, shales, and other...
    43 KB (5,026 words) - 22:53, 10 May 2024
  • Thumbnail for Durdle Door
    the bands of rock are quite narrow. Originally a band of resistant Portland limestone ran along the shore, the same band that appears one mile along the...
    14 KB (1,346 words) - 19:34, 11 February 2024
  • Thumbnail for Limestone
    of high-quality quarried limestone, called Indiana limestone. Many famous buildings in London are built from Portland limestone. Houses built in Odesa in...
    72 KB (8,512 words) - 12:31, 16 May 2024
  • Thumbnail for List of types of limestone
    fallback Portland stone – Limestone quarried on the Isle of Portland, Dorset, England Portland Admiralty Roach – Rock type Bowers Basebed Portland Bowers...
    7 KB (964 words) - 05:24, 8 May 2024
  • Thumbnail for Concordant coastline
    Dorset is situated on a concordant coastline. The outer hard rock is Portland limestone. The sea has broken through this barrier and easily eroded the clays...
    3 KB (317 words) - 10:35, 30 April 2024
  • Thumbnail for Isle of Portland
    and east Devon coast, important for its geology and landforms. Portland stone, a limestone famous for its use in British and world architecture, including...
    83 KB (7,329 words) - 14:37, 6 May 2024
  • Thumbnail for Discordant coastline
    running north from the Portland limestone of Durlston Head is a clear example of a discordant coastline. The Portland limestone is resistant to erosion;...
    2 KB (188 words) - 20:18, 6 February 2024
  • Thumbnail for Cement clinker
    Cement clinker (category Limestone)
    the point of liquefaction) limestone and aluminosilicate materials such as clay during the cement kiln stage. The Portland clinker essentially consists...
    9 KB (1,109 words) - 15:35, 11 November 2023
  • Thumbnail for Lulworth Cove
    have been eroded. A narrow (less than 30 metres (98 ft)) band of Portland limestone rocks forms the shoreline. Behind this is a narrow (less than 50 metres...
    7 KB (693 words) - 23:45, 10 February 2024
  • Atlas Cement Company. Company's brand products include Ashaka branded Portland limestone cement produced in Gombe State, Elephant and Superset cement produced...
    6 KB (672 words) - 09:58, 8 March 2024
  • Look up Portland or portland in Wiktionary, the free dictionary. Portland most commonly refers to: Portland, Oregon, the largest city in the U.S. state...
    8 KB (1,113 words) - 16:54, 5 April 2024
  • Thumbnail for Purbeck Hills
    Purbeck Hills is protected from coastal erosion by a band of resistant Portland limestone. Where this band ends, at Durlston Head, the clay and chalk behind...
    4 KB (381 words) - 16:55, 3 February 2024
  • Thumbnail for Oolite
    Oolite (redirect from Oolitic limestone)
    ISBN 1-85471-044-3. Oolitic limestones … are among the most popular building stones and include Portland stone and Bath stone "Miami Limestone". USGS. Retrieved...
    7 KB (861 words) - 15:48, 12 March 2024
  • Thumbnail for Purbeck Group
    consists of fresh-water and terrestrial deposits, marls, and limestones (the famous Portland limestone) with several fossil soils known as dirt beds. This division...
    11 KB (1,281 words) - 18:19, 31 January 2024
  • Thumbnail for Portland Group (geology)
    include limestones, dolomitic sandstone, siltstone, and mudstone. It is divided into two formations, the Portland Stone Formation (or 'Portland Limestone Formation')...
    4 KB (302 words) - 08:01, 20 April 2022
  • Thumbnail for Portland Independent Top Whitbed
    Ashton Memorial in Lancaster. It originates from Independent quarries on the Isle of Portland, Dorset, England. List of types of limestone v t e v t e...
    751 bytes (59 words) - 21:00, 13 May 2024
  • Thumbnail for Corallian Group
    is often found close to seams of Portland Limestone (e.g. Abbotsbury in Dorset, England). It is a younger limestone than its near-neighbour, the Oolitic...
    5 KB (468 words) - 08:02, 13 October 2023
  • Thumbnail for Burdett-Coutts Memorial Sundial
    a tall square tower in a decorated Gothic style, topped by a tall Portland limestone pinnacle bearing a sundial, supported by columns of pink Shap granite...
    10 KB (1,161 words) - 07:51, 13 April 2024
  • Thumbnail for Stormont Estate
    on the east side of Parliament Buildings. It is a solid block of Portland limestone with stepped top and corners on a shallow plinth base, set on a stepped...
    10 KB (934 words) - 02:18, 6 February 2024
  • Thumbnail for Headquarters of the United Nations
    of limestone for the building, which in turn resulted from a heavy snow at the British limestone quarries that were supplying the building's Portland limestone...
    143 KB (13,572 words) - 14:10, 10 May 2024
  • Thumbnail for Cement
    manufacture of Portland cement (approximately 60%) are produced from the chemical decomposition of limestone to lime, an ingredient in Portland cement clinker...
    80 KB (9,341 words) - 11:16, 13 May 2024
  • Thumbnail for Laevitrigonia
    ; Whyte, M. A. (1995). "Phosphatized soft tissues in bivalves from the Portland Roach of Dorset (Upper Jurassic)". Geological Magazine. 132: 117. doi:10...
    1 KB (54 words) - 03:19, 8 March 2022
  • Thumbnail for Isle of Purbeck
    Jurassic rocks, including Portland limestone and the Purbeck beds. The latter include Purbeck Marble, a particularly hard limestone that can be polished (though...
    15 KB (2,052 words) - 16:18, 3 May 2024
  • Thumbnail for Geography of Dorset
    onshore oilfield lies under the south-east of the county. Portland stone and Purbeck limestone have both been quarried for centuries to provide construction...
    21 KB (3,088 words) - 04:58, 14 May 2023
  • member is a shaley limestone. The Jeffersonville Limestone is a coarse grained, dark gray, thick bedded, fossiliferous limestone. Quarries in Pulaski...
    4 KB (221 words) - 18:26, 3 March 2024
  • Thumbnail for Kingston Maurward House
    derogatory comments from King George III, Pitt clad the house in Portland limestone. The building faces south, and has a projecting central section. The...
    3 KB (379 words) - 08:18, 22 June 2023
  • Thumbnail for List of decorative stones
    Magnesian Limestone Portland stone Portland Admiralty Roach Portland Bowers Basebed Portland Bowers Lynham Whitbed Portland Bowers Saunders Whitbed Portland Grove...
    11 KB (483 words) - 04:34, 17 December 2023
  • levels of clinker substitution. Limestone Calcined Clay Cement is a low-carbon alternative to the standard Portland cement. LC3 can reduce CO2 emissions...
    11 KB (787 words) - 05:01, 10 April 2024
  • Thumbnail for Eddystone Lighthouse
    outside structure were built of local Cornish granite, while lighter Portland limestone masonry was used on the inside. As part of the construction process...
    39 KB (4,206 words) - 14:08, 18 May 2024