1. Building materials as geologic samples Thursdays for Teachers September 24, 2009

2. The earth’s recycling system

3. Rocks related to other rocks Related by processes There is a cyclicity of earth processes Product of our dynamic planet

4. magma molten rock igneous rock

5. Form from cooling and crystallization of magma (molten rock) Liquid -> solid Atoms, ions, ionic complexes With cooling, movement slows Aligned, ordered Form minerals

6. Igneous rocks (as well as other rock types) can be uplifted and exposed at the earth’s surface Subject to atmosphere, hydrosphere, biosphere Break down - weathering Solid rock -> small particles & dissolved material

7. magma molten rock igneous rock uplift & weathering cooling & crystallization

8. Dissolution of the mineral calcite

9. magma molten rock igneous rock uplift & weathering cooling & crystallization sediment

10. Transported by water, wind, ice, gravity Deposited in different environments Weight of overlying sediment compresses sediments below Compaction of grains, expulsion of water Voids filled with minerals (cement) Forms sedimentary rocks

11. magma molten rock igneous rock uplift & weathering cooling & crystallization sediment sedimentary rock transportation, deposition, & cementation

12. Continued burial, pressure & temperature rise Chemical reactions occur (minerals out of stability fields) Create new minerals and textures Metamorphism (change)

13. magma molten rock igneous rock uplift & weathering cooling & crystallization sediment sedimentary rock transportation, deposition, & cementation metamorphic rock increased T & P metamorphism

14. igneous metamorphic

15. magma molten rock igneous rock uplift & weathering cooling & crystallization sediment sedimentary rock transportation, deposition, & cementation metamorphic rock increased T & P metamorphism melting

16. Can you think of any modifications we should make to the rock cycle to make it more realistic? i.e. do all metamorphic rocks melt? do all sedimentary rocks become metamorphic rocks? How can the rock cycle link to the water cycle or the tectonic cycle?

17. magma molten rock igneous rock uplift & weathering cooling & crystallization sediment sedimentary rock transportation, deposition, & cementation metamorphic rock increased T & P metamorphism melting shortcuts

18. Look for different rock types in the museum Think about how you could use your school or nearby buildings