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The Rock Cycle in a Museum:

The Rock Cycle in a Museum:. Building materials as geologic samples Thursdays for Teachers September 24, 2009. Rock Cycle. The earth’s recycling system. Rock Cycle. Rocks related to other rocks Related by processes There is a cyclicity of earth processes Product of our dynamic planet.

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The Rock Cycle in a Museum:

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  1. The Rock Cycle in a Museum: Building materials as geologic samples Thursdays for Teachers September 24, 2009

  2. Rock Cycle The earth’s recycling system

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

  4. igneous rock magma molten rock

  5. Igneous Rocks • 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. uplift & weathering igneous rock cooling & crystallization magma molten rock

  8. An example of chemical weathering • Dissolution of the mineral calcite

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

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

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

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

  14. Increase P & T -> melting igneous metamorphic

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

  16. Is this all there is? • 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. shortcuts transportation, deposition, & cementation sedimentary rock sediment uplift & weathering increased T & P metamorphism igneous rock metamorphic rock cooling & crystallization magma melting molten rock

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

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