How Is Chalk Formed?

Answer

Chalk is a soft, white, sedimentary rock, made from limestone. It forms in deep marine conditions in oceans. The gradual accumulation of minute calcite plates that are shed from tiny animals called coccolithophores make up a chalk deposit. You can find more information here: http://en.wikipedia.org/wiki/Chalk
Q&A Related to "How Is Chalk Formed"
How was it formed? - Chalk is biologically formed limestone. It is made of coccoliths which are calcareous discs from the skeletons of single-celled algae. The chalk is white because
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It is comprised of a sequence of mainly soft, white, very fine-grained extremely pure limestones which are
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Chalk is formed from lime mud, which accumulates on the sea floor in the right conditions. This is then transformed into rock by geological processes: as more sediment builds up on
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Dear Atharv, Chalk is usually made from Calcium Carbonate (CaCO3) powder, which gives it a white or off-white color. It is mixed with a binder or glue and pressed into cylindrical
http://en.allexperts.com/q/Composite-Materials-243...
1 Additional Answer
Natural chalk is formed from a soft form of limestone which is a mineral calcite material. The calcite mineral was formed in deep marine environments from the sediment that accumulated from the remains of micro-organisms that settle on the bottom. You can find more information here: http://www.geologyshop.co.uk/chalk.htm
Explore this Topic
Chalk is a very soft rock; it is a form of limestone composed of mineral calcite. It forms under deep marine conditions. Chalk can also refer to other compounds ...
Chalk is commonly made from calcium carbonate. It can also be extracted from natural limestone composed of calcite. Chalk is used in the form of slender sticks ...
Chalk is made from primary calcium carbonate which is a form of limestone. Other main components of chalk are gypsum, silica, phosphorus, iron, alumina, phosphorus ...
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