Tag Archives: Calcium carbonate

Environment News: Coral Reefs


Coral Reefs

A coral reef is a ridge of living coral, coral skeletons, and calcium carbonate deposits from organisms such as calcareous algae, mollusks, and protozoans. The resulting structure provides a critical habitat for a wide variety of fish and marine invertebrates. Coral reefs also protect shores against erosion by causing large waves to break and lose some of their force before reaching land. More than 90% of the estimated 109,800 sq mi (284,300 sq km) of reefs in the world are in what region? More… Discuss

Sandstone


Sandstone

Sandstone is a sedimentary rock formed when

English: A classification chart of sedimentary...

English: A classification chart of sedimentary rocks. (Photo credit: Wikipedia)

grains of sand have been cemented together by a material such as silica, iron oxide, or calcium carbonate. It usually consists mainly of quartz and can vary in color from yellow or red to gray or brown. Sandstone’s porous nature makes it ideal for aquifers, and it is also widely used in construction and industry. Why is sandstone commonly used for decorative features in buildings? More… Discuss

WORD: CALCAREOUS


calcareous 

Definition: (adjective) Of, containing, or resembling calcium carbonate.
Synonyms: chalky
Usage: Immense accumulations of bird-guano gave the sides of Mount Mendif the appearance of calcareous rocks. Discuss.