Erosion
Deposition
Burial and Cementing
Igneous Rock Metamorphic Rock Sedimentary Rock
Igneous Rock Metamorphic Rock Sedimentary Rock
The rock cycle
igneous, sedimentary, metamorphic
Igneous
igneous
sedimentary
sedimentary
The rock cycle.
Roughly 75-80% of the Earth's crust is made up of igneous rocks, 15-20% are metamorphic rocks, and 5-10% are sedimentary rocks. These percentages can vary depending on the local geology and geological processes at work.
An igneous rock, just like any other rock, can be changed through metamorphic, igneous, and/or sedimentary processes. When exposed to high temp. and pressure, igneous becomes metamorphic. When re-melted, it becomes igneous again. When weathered/eroded, it becomes sedimentary.
An igneous rock, just like any other rock, can be changed through metamorphic, igneous, and/or sedimentary processes. When exposed to high temp. and pressure, igneous becomes metamorphic. When re-melted, it becomes igneous again. When weathered/eroded, it becomes sedimentary.