Coral reef
coral : a deep shade of pink also, stony material consisting of skeletons of tiny sea animals choral : relating to a chior (group of singers) ie. a choral group at church
This seems to refer to meteoroids. If they land on Earth they're called meteorites. They are usually stony, but some are metallic.
When coral animals die their skeletons remain. More corals build on top of them, gradually forming a coral reef
In North Africa, a vast stony desert plain is known as reg.
Mudstone.
Stalactites. Those growing up from the floor are Stalagmites. Their "stony" material is usually the mineral calcite (crystalline calcium carbonate).
A stony desert is called a 'Reg' desert. A sandy desert is called an 'Erg' desert.
till
coral reefs are made in the oeacen by rocks and plants that are in the oceacen for handereds of years.
it is called meteorite
There are 3 main types of meteorites Stone, Iron and Stony-Iron. Stony-Iron types are divided into 2 classes Pallasites and Mesosiderites.
Stony, Stony-Iron, and Iron.