Another process of the rock cycle is erosion ... 5 Cementation In the final process of sedimentary rock formation, some of the minerals in the sediment harden and form a kind of cement which ...

There are three main types of rock: igneous rock, metamorphic rock, and sedimentary rock ... three rock types has been continuously formed and recycled into other types of rock in a process called the ...

New research into fossilized rock formations in Zimbabwe is shedding light on Earth's nitrogen cycle before the rise ... nitrogen isotope values found in sedimentary rocks dating back 2.75 billion ...