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Limestone (calcium carbonate CaCO 3) 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 CaCO 3. Limestone forms when these minerals precipitate out of water containing dissolved calcium. This can take place ...
The tectonics processes in Indonesia formed major structures in Indonesia. The most prominent fault in the west of Indonesia is the Semangko Fault or the Great Sumatran Fault, a dextral strike-slip fault along Sumatra Island (about 1,900 km). The formation of this fault zone is related to the subduction zone in the west of Sumatra.
Purbeck Marble – Fossiliferous limestone found in the Isle of Purbeck, Dorset, England (not a "true marble"; fossiliferous limestone) Sussex Marble – Limestone Pages displaying wikidata descriptions as a fallback Pages displaying short descriptions with no spaces (not a "true marble"; fossiliferous freshwater limestone)
Pages in category "Limestone formations" The following 200 pages are in this category, out of approximately 374 total. This list may not reflect recent changes .
Limestone is a geological rock formed primarily from calcium carbonate and in water. It is produced principally during periods when there is a high proportion of carbon dioxide in the atmosphere . It varies greatly in its hardness and in the materials included in it so its commercial uses vary.
Tufa columns at Mono Lake, California. Tufa is a variety of limestone formed when carbonate minerals precipitate out of water in unheated rivers or lakes. Geothermally heated hot springs sometimes produce similar (but less porous) carbonate deposits, which are known as travertine or thermogene travertine.
Sussex Marble is a fossiliferous freshwater limestone material which is prevalent in the Weald Clay of parts of Kent, East Sussex and West Sussex in southeast England. It is also called Petworth Marble, Bethersden Marble or Laughton Stone in relation to villages where it was quarried, [1] and another alternative name is winklestone.
The largest and most abundant solutional caves are located in limestone. Limestone dissolves under the action of rainwater and groundwater charged with H 2 CO 3 (carbonic acid) and naturally occurring organic acids. The dissolution process produces a distinctive landform known as karst, characterized by sinkholes and underground drainage.