| limestone |
a sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals
출처: wordnet.princeton.edu/perl/webwn
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| limestone |
Limestone is a sedimentary rock composed of the mineral calcite (calcium carbonate). The primary source of this calcite is usually marine organisms. These organisms secrete shells that settle out of the water column and are deposited on ocean floors as pelagic ooze (see lysocline for information on calcite dissolution). Secondary calcite may also be deposited by supersaturated meteoric waters (groundwater that precipitates the material in caves). ...
출처: en.wikipedia.org/wiki/Limestone
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| limestone |
rock that is made mostly of calcium carbonate; the most abundant type of rock in Kentucky
출처: www.kentuckyawake.org/templates/glossary/
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| limestone |
a rock formed from carbonate minerals
출처: www.msnucleus.org/membership/html/k-6/rc/dictionar...
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| limestone |
A sedimentary rock composed mostly of calcium carbonate (CaCO3).
출처: imnh.isu.edu/digitalatlas/glossary/letter.asp
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