Kategorier: Alla - sedimentary - metamorphic - igneous - magma

av Elise Low för 15 årar sedan

2095

Rocks of the Earth

The Earth's crust is composed of various types of rocks that undergo continuous transformation through the rock cycle. Igneous rocks form from cooled and hardened magma, with coarse-grained types like granite originating from slow cooling within the Earth'

Rocks of the Earth

Rocks of the Earth

The rock cycle

The continual process by which rocks change from one type to another

Metamorphic rocks

Coarse-grained
sandstone
Fine-grained
Shale
A rock that is completely transformed or changed from an igneous or sedimentary rock under intense heat or pressure

Sedimentary rocks

formed by the cementing and hardening of layers of sediments under pressure from the overlying layers

Igneous rocks

Fine-grained igneous rocks
Eg. Basalt
formed when lava cools and hardens quickly on the Earth's surface.
Coarse-grained igneous rocks
Eg. Granite
formed when magma cools and hardens slowly in the Earth's interior
Igneous rocks are magma that has cooled and hardened, either beneath or above the Earth's surface

Rocks are solid materials of the Earth's crust