This book brings together the essential theory required to understand the behaviour of trace elements in magmas and magma-derived rocks.

Preface; 1. Introduction; 2. Partition coefficients; 3. Crystallisation: basic trace element modelling; 4. Crystallisation: variation of mineral proportions, partition coefficients and fluid phase proportion; 5. Crystallisation assimilation, recharge and eruption; 6. Trace element evidence for crystallisation processes; 7. Melting: basic trace element modelling; 8. Melting: more complex processes; 9. Dynamic mantle melting; Index.