What is required for the formation of sedimentary rocks?

Sedimentary rocks are the product of 1) weathering of preexisting rocks, 2) transport of the weathering products, 3) deposition of the material, followed by 4) compaction, and 5) cementation of the sediment to form a rock. The latter two steps are called lithification.    l

lava is important oo in the form of sedimentary rocks

thanx heyy

because there are alot of mountains