1. Igneous rock (stollingsgesteente)
a. Intrusive - (dieptegesteente)
b. extrusive - (uitvloeiingsgesteente),
2. Sedimentary rock (sedimentair- / afzettingsgesteente)
a. clastic sediments (consists of rock particles = clasts)
b. chemical or organic sediments
3. Metamorphic rock (metamorfe gesteente)