Branches of geology 1. Petrology 2. Mineralogy 3. Detroleum geology 4. Structural geology 5. Hydrogeology 6. Daleotology 7. Stratigraphy 8. Historical geology 9. Engineering geology ?

10. Geomorphology
11. Sedimentology
12. Volcanology
13. Geophysics
14. Geochemistry
15. Environmental geology
16. Economic geology
17. Planetary geology
18. Glaciology
19. Tectonics
20. Paleontology

10. Geophysics