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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

The Rock Cycle in a Museum:

Building materials as geologic samples

Thursdays for Teachers

September 24, 2009

rock cycle

Rock Cycle

The earth’s recycling system

rock cycle1
Rock Cycle
  • Rocks related to other rocks
  • Related by processes
  • There is a cyclicity of earth processes
  • Product of our dynamic planet
slide4

igneous rock

magma

molten rock

igneous rocks
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
slide6

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
slide7

uplift &

weathering

igneous rock

cooling & crystallization

magma

molten rock

an example of chemical weathering
An example of chemical weathering
  • Dissolution of the mineral calcite
slide9

sediment

uplift &

weathering

igneous rock

cooling & crystallization

magma

molten rock

sediment
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
slide11

transportation,

deposition, &

cementation

sedimentary

rock

sediment

uplift &

weathering

igneous rock

cooling & crystallization

magma

molten rock

metamorphic rocks
Metamorphic rocks
  • Continued burial, pressure & temperature rise
  • Chemical reactions occur (minerals out of stability fields)
  • Create new minerals and textures
  • Metamorphism (change)
slide13

transportation,

deposition, &

cementation

sedimentary

rock

sediment

uplift &

weathering

increased T & P

metamorphism

igneous rock

metamorphic rock

cooling & crystallization

magma

molten rock

increase p t melting
Increase P & T -> melting

igneous

metamorphic

slide15

transportation,

deposition, &

cementation

sedimentary

rock

sediment

uplift &

weathering

increased T & P

metamorphism

igneous rock

metamorphic rock

cooling & crystallization

magma

melting

molten rock

is this all there is
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?
slide17

shortcuts

transportation,

deposition, &

cementation

sedimentary

rock

sediment

uplift &

weathering

increased T & P

metamorphism

igneous rock

metamorphic rock

cooling & crystallization

magma

melting

molten rock

objective tonight
Objective tonight

Look for different rock types in the museum

Think about how you could use your school or nearby buildings