They have been slowly recycled over millions of years.This is called the rock cycle.Sedimentary rocks form when tiny particles of rock that have been weathered and eroded settle out of slow moving ...

Almost all fossils are preserved in sedimentary rock. Organisms that live in topographically ... formed and recycled into other types of rock in a process called the “rock cycle.” This makes the rock ...

They believe the cycle is likely to be underway at similar ... These cements are the same materials that bind together natural sedimentary rocks, but the chemical reactions cause the process ...

The researchers have documented a new “rapid anthropoclastic rock cycle” Sign up to our Scotsman ... same materials that bind together natural sedimentary rocks, but the chemical reactions ...