p.140-141d

1. Types of Igneous Plutons p.140-141d Volcano Dikes Laccolith Sills Volcanic Pipe Original artwork by Gary Hincks Dikes Batholith

2. Fig. 6.08b Stephen Marshak

4. Types of Igneous Plutons p.140-141d Volcano Dikes Laccolith Sills Volcanic Pipe Original artwork by Gary Hincks Dikes Batholith

5. Fig. 6.10 W. W. Norton

6. Fig. 6.11a Stephen Marshak

7. Fig. 6.11de Paul Hoffmann

8. Fig. 6.18 W. W. Norton

9. Plate Tectonic Setting as a Context For Magma Generation 3) Divergent margins:Melting of lithosphere along ocean spreading centers 4) Melting of lithosphere & crust beneath continental rift zones 2) Convergent margins: Subduction of slabs of lithosphere 1) Mantle plumes & hot-spots

10. Fig. 6.14ab W. W. Norton

11. Ways To Melt Rock: Fig. 6.04a Lower pressure in the mantle (e.g. along divergent margins) W. W. Norton

12. Fig. 6.03 Rock moving from point A to point B in the mantle sees a decrease in pressure. W. W. Norton “Decompression melting”

13. Ways To Melt Rock Fig. 6.04a Raise the temperature of the surrounding rock to melting temperature W. W. Norton

14. Ways To Melt Rocks Fig. 6.04c Add water! W. W. Norton

15. Fig. 6.04b W. W. Norton

16. Making Silica-rich Magmas Fig. 6.05a W. W. Norton 1) Partial melting of mafic, or ultramafic rocks.

17. Making Silica-rich Magmas: 2) Assimilation of siliceous “country rocks”

18. Fig. 6.09ab W. W. Norton

19. Making Silica-rich Magmas Fig. 6.05c W. W. Norton 3) Fractional crystallization & gravity settling of early formedmafic minerals.