Rock Cycle

Magma cools and becomes Igneous Rocks. 
Igneous Rocks undergo uplift and then weathering and erosion.
The sediments eroded burial and lithification to form Sedimentary Rocks.
Sedimentary Rocks are either uplifted and eroded to become new Sedimentary Rocks, or are subject to high heat and pressure, becoming Metamorphic Rocks.
Metamorphic Rocks either undergo uplift and are eroded to make Sedimentary Rocks, or are melted into magma to make Igneous Rocks.
The Igneous Rocks either undergo uplift to begin the cycle again, or are re-melted to become Metamorphic Rocks.