Rocks that are formed of pieces of other rocks, plant and animal matter, or dissolved minerals are called sedimentary rocks.

Here's a breakdown:

* Clastic sedimentary rocks: These are made from fragments of other rocks that have been weathered and eroded. Examples include sandstone, shale, and conglomerate.

* Chemical sedimentary rocks: These are formed when dissolved minerals precipitate out of water. Examples include limestone, rock salt, and gypsum.

* Organic sedimentary rocks: These are formed from the accumulation of plant or animal remains. Examples include coal and oil shale.