The first step in turning a rock into sediment is weathering and erosion. The weathering and erosion of igneous or metamorphic rocks will turn those rocks into sediment. After the broken off rocks are turned into sediment, the sediments will have to be compacted.
Hope this helps, ♥<span><em>A.</em><em>W.E.<u>S.W.A.N.</u></em></span><span>♥</span>
