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Chalk - Wikipedia
Chalk is a soft, white, porous, sedimentary carbonate rock. It is a form of limestone composed of the mineral calcite and originally formed deep under the sea by the compression of microscopic plankton that had settled to the sea floor. Chalk is common throughout Western Europe, where deposits underlie parts of France, and steep cliffs are often seen where they meet the sea in places suc…
Wikipedia · Text under CC-BY-SA licenseChalk Definition & Meaning - Merriam-Webster
Learn the noun and verb meanings of chalk, a soft limestone or a writing material. See examples, etymology, and related phrases of chalk.
Interesting reads - Chalk
Powered by Microsoft StartChalk | Properties, Composition, Formation and Uses - Geology …
Chalk is a soft, white, porous, sedimentary rock formed from the accumulation of microscopic marine organisms' remains, mainly coccolithophores. Learn about its p…
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Chalk: A biological limestone formed from shell debris
Chalk is a type of limestone composed mainly of calcium carbonate from the remains of tiny marine organisms. Learn how chalk forms, where it occurs, how to identify it, and how it relates to oil and gas production.
Chalk | Sedimentary, Limestone, Calcium Carbonate | Britannica
Chalk is a type of limestone composed of shells of marine organisms and calcium carbonate. It is used for making lime, cement, fertilizer, and various products such as putty, crayons, and paints.
Chalk - Geology is the Way
Chalk is a soft, friable variety of limestone formed by planktonic organisms in the open sea. Learn about its composition, classification, and distribution, and see photos of chalk outcrops and fossils.
Chalk - Natural Atlas
Chalk is a form of limestone composed of calcite, formed by compressed plankton in the sea. It is used for various purposes, such as quicklime, bricks, putty and blackboard chalk.
Chalk - Encyclopedia.com
Jun 8, 2018 · Learn about chalk, a form of limestone or gypsum used for writing and drawing. Find out how chalk is formed, quarried, processed, and colored.
CHALK | English meaning - Cambridge Dictionary
Learn the meaning of chalk as a type of soft white rock or a stick of this rock for writing or drawing. Find out how to use chalk in sentences and phrases, and see translations in different …
