rocks… what are the different types and how are they formed?
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Rocks… what are the different types and how are they formed?. Igneous rocks form from molten rock cooling and hardening on OR below the surface of the Earth. EXTRUSIVE igneous rocks are from cooled lava on the surface of the earth. - PowerPoint PPT PresentationTRANSCRIPT
Rocks… what are the different types and how
are they formed?
Igneous rocks form from molten rock cooling and hardening on OR below the surface of the Earth.
EXTRUSIVE igneous rocks are from cooled lava on the surface of the earth.
INTRUSIVE igneous rocks form from magma cooling slowing inside the earth.
These intrusive igneous rocks have larger crystals because they cooled very slowly inside the earth.
These extrusive igneous rocks cooled so quickly on the earth's surface they have very small or no crystals at all.
How are they formed?1
2
Rocks that form when particles of rock or sediments settle and
harden together.
Metamorphic Rocks
Rocks that are formed when existing rocks are heated and squeezed with
extreme pressure
The Rock CycleThink about relationships among the
major rock groups and illustrate the Rock Cycle Diagram in your journal as we go through the PPT.
Fig. 2.9
MAGMA
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MAGMA
Cools & Crystallizes
IGNEOUS ROCK
20
MAGMA
IGNEOUS ROCK
Intrusive
Crystallization
Cools slowly inside the earth
21
MAGMA
Extrusive
IGNEOUS ROCK
Intrusive
Crystallization
Cools quickly on the earth’s surface
22
MAGMA
Extrusive
IGNEOUS ROCK
Intrusive
Crystallization
Weathering & Erosion
23
MAGMA
Extrusive
IGNEOUS ROCK
Intrusive
SEDIMENT
Crystallization
SEDIMENTSWeathering& Erosion
24
MAGMA
Extrusive
IGNEOUS ROCK
Intrusive
SEDIMENT
SEDIMENTARY
Crystallization
Weathering& Erosion
Transport
Deposition
25
MAGMA
Extrusive
IGNEOUS ROCK
Intrusive
SEDIMENT
SEDIMENTARY
Crystallization
Weathering & Erosion
Transport
Deposition
26
MAGMA
Extrusive
IGNEOUS ROCK
Intrusive
SEDIMENT
SEDIMENTARY
METAMORPHIC
Burial
Heat & Pressure
Crystallization
Weathering & Erosion
Transport
Deposition
27
MAGMA
Extrusive
IGNEOUS ROCK
Intrusive
SEDIMENT
SEDIMENTARY
METAMORPHIC
Burial
Heat & Pressure
MeltingCrystallization
Weathering & Erosion
Transport
DepositionCan you see
any shortcuts?
28
MAGMA
Extrusive
IGNEOUS ROCK
Intrusive
SEDIMENT
SEDIMENTARY
METAMORPHIC
Burial
Heat & Pressure
T
MeltingCrystallization
Weathering & Erosion
Transport
Deposition
Weather /Erode into sediments - Sedimentary
29
MAGMA
Extrusive
IGNEOUS ROCK
Intrusive
SEDIMENT
SEDIMENTARY
METAMORPHIC
Burial
Heat & Pressure
T
MeltingCrystallization
Weathering & Erosion
Transport
Deposition
Heat & Pressure - Metamorphic
30
MAGMA
Extrusive
IGNEOUS ROCK
Intrusive
SEDIMENT
SEDIMENTARY
METAMORPHIC
Burial
Heat & Pressure
T
MeltingCrystallization
Weathering & Erosion
Transport
Deposition
Melt & Crystallize into Igneous
• The rock cycle demonstrates the relationships among the three major rock groups
• It is powered by the Earth’s heat
• It involves processes on the Earth’s surface as well as the Earth’s interior
• It connects the “water cycle” with the “tectonic cycle”.
In Conclusion…
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MAGMA
Extrusive
IGNEOUS ROCK
Intrusive
SEDIMENT
SEDIMENTARY
METAMORPHIC
Burial
Heat & Pressure
T
MeltingCrystallization
Weathering & Erosion
Transport
Deposition
Weathering & Erosion
Heat & Pressure
Melt & Crystallize