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A limestone pavement is a natural karst landform consisting of a flat, incised surface of exposed limestone that resembles an artificial pavement. [1] The term is mainly used in the UK and Ireland, where many of these landforms have developed distinctive surface patterning resembling paving blocks. [2] Similar landforms in other parts of the ...
Bitumen ( UK: / ˈbɪtʃʊmɪn / BITCH-uu-min, US: / bɪˈtjuːmɪn, baɪ -/ bih-TEW-min, by-) [1] is an immensely viscous constituent of petroleum. Depending on its exact composition it can be a sticky, black liquid or an apparently solid mass that behaves as a liquid over very large time scales.
Limestone. Limestone ( calcium carbonate CaCO3) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of CaCO3. Limestone forms when these minerals precipitate out of water containing dissolved calcium.
Karst. Lijiang fengcong (cone karst) in Guilin as part of the South China Karst. Karst ( / kɑːrst /) is a topography formed from the dissolution of soluble carbonate rocks such as limestone, dolomite, and gypsum. It is characterized by features like poljes above and drainage systems with sinkholes and caves underground.
Pavement cells. Pavement cells are a cell type found in the outmost epidermal layer of plants. The main purpose of these cells is to form a protective layer for the more specialized cells below. [1] The arrangement and undulating geometry of these cells are demonstrated to enhance the epidermal tear resistance by extending the path of cracks ...
Biomineralization, also written biomineralisation, is the process by which living organisms produce minerals, [a] often resulting in hardened or stiffened mineralized tissues. It is an extremely widespread phenomenon: all six taxonomic kingdoms contain members that are able to form minerals, and over 60 different minerals have been identified ...
Limestone pavement – Natural karst landform consisting of a flat, incised surface of exposed limestone. Mesa – Elevated area of land with a flat top and sides, usually much wider than buttes. Mushroom rock – Naturally occurring rock whose shape resembles a mushroom. Natural arch – Arch-shaped natural rock formation.
Malham Cove is a large curved limestone formation 0.6 miles (1 km) north of the village of Malham, North Yorkshire, England. It was formed by a waterfall carrying meltwater from glaciers at the end of the last Ice Age more than 12,000 years ago. Today it is a well-known beauty spot and rock climbing crag within the Yorkshire Dales National Park ...