organisms (like clams and corals) chemical weathering can break rock into are carried during can create dissolved ions any rock at the surface undergoes mechanical weathering erosion by clay sand gravel silt mud breaks rock into streams & groundwater is a type of makes minerals from clastic sediment usually to the are types of grow in plants ocean are carried during crystallization of ions usually happens in the streams waves glaciers gravity wind die and are that live in is done by erosion is often aided by happens before sediments are creates minerals that then are swamps organisms (like clams and corals) deposited deposited plant material will be buried and harden, or deposited sediments will harden, or sediments harden, or become burial (compaction) of sediments, causes them to lithify lithify burial (compaction) lithified cementation forming of sediments, causes them to become minerals crystallized in water are form after clastic sediments cementation lignite, peat, coal clastic sedimentary rock chemical sedimentary rock