Fun Facts About Chalk
Natural chalk is composed of coccoliths, microscopic limestone plates formed by single-celled marine organisms called coccolithophores. Millions of years ago, these accumulated calcium carbonate shells sank to the ocean floor, forming dense layers that eventually surfaced as prominent geological features such as the White Cliffs of Dover. This rock layer defines the Cretaceous period, derived from creta, the Latin word for chalk. Beyond its geological presence, chalk plays an important role in modern applications; agricultural liming utilizes pulverized chalk to neutralize acidic soils and…
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