What is the process of which new rock forms from old rocks?

Answer 1

There are several ways by which old rocks can become "new" rocks, all of which are described by the rock cycle. A rock, no matter what class it falls under, can become igneous, metamorphic, or sedimentary. When melted and then re-cooled, a rock become igneous. When exposed to very high temperature and pressure, the rock becomes metamorphic. When weather or eroded by wind, water, etc., and then lithified (cemented together), the rock becomes sedimentary. Again, any rock can go from one class to the other, or in some cases become a new rock of the same class.

Answer 2

There are three main processes:

1. friction/compression heating at subduction zone melts old rocks making magma, the magma can either solidify underground creating a new igneous rock intrusion or escape to the surface as lava and create new igneous rock on the surface
2. sedimentation of eroded material from old rocks creates new sedimentary rocks
3. heat and pressure on old igneous or sedimentary rocks metamorphoses them into new metamorphic rocks

Answer 3

process by which new rock is made from old rock

Answer 4

weathering and erosion

Answer 5

Rock Cycle