Rocks… what are the different types and how are they formed?

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Thinking about relationships among the major rock groups

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Presentation transcript:

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.

Rocks that form when particles of rock or sediments settle and harden together. 1 How are they formed? 2

Metamorphic Rocks

Rocks that are formed when existing rocks are heated and squeezed with extreme pressure

The Rock Cycle Think 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

IGNEOUS ROCK Cools & Crystallizes MAGMA

Crystallization Cools slowly inside the earth IGNEOUS ROCK Intrusive MAGMA

Cools quickly on the earth’s surface Extrusive IGNEOUS ROCK Intrusive Crystallization MAGMA

Weathering & Erosion Crystallization Extrusive IGNEOUS ROCK Intrusive MAGMA

Weathering& Erosion Crystallization SEDIMENTS SEDIMENT Extrusive IGNEOUS ROCK Intrusive Crystallization MAGMA

Weathering& Erosion Transport Deposition Crystallization SEDIMENT Extrusive IGNEOUS ROCK Intrusive SEDIMENTARY Crystallization MAGMA

Weathering & Erosion Transport Deposition Crystallization SEDIMENT Extrusive IGNEOUS ROCK Intrusive SEDIMENTARY Crystallization MAGMA

METAMORPHIC Weathering & Erosion Transport Deposition Heat & Pressure SEDIMENT Transport Deposition Extrusive IGNEOUS ROCK Intrusive SEDIMENTARY Burial Heat & Pressure METAMORPHIC Crystallization MAGMA

METAMORPHIC Weathering & Erosion Transport Deposition Heat & Pressure SEDIMENT Transport Deposition Extrusive IGNEOUS ROCK Intrusive Can you see any shortcuts? SEDIMENTARY Burial Heat & Pressure METAMORPHIC Crystallization Melting MAGMA

METAMORPHIC Weathering & Erosion Transport SEDIMENT Transport Weather /Erode into sediments - Sedimentary Deposition Extrusive IGNEOUS ROCK Intrusive SEDIMENTARY Burial Heat & Pressure T METAMORPHIC Crystallization Melting MAGMA

METAMORPHIC Weathering & Erosion Transport Deposition SEDIMENT Transport Deposition Extrusive IGNEOUS ROCK Intrusive SEDIMENTARY Heat & Pressure - Metamorphic Burial Heat & Pressure T METAMORPHIC Crystallization Melting MAGMA

METAMORPHIC Weathering & Erosion Transport Deposition Heat & Pressure SEDIMENT Transport Deposition Extrusive IGNEOUS ROCK Intrusive SEDIMENTARY Burial Heat & Pressure T Melt & Crystallize into Igneous METAMORPHIC Crystallization Melting MAGMA

It is powered by the Earth’s heat In Conclusion… 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”.

METAMORPHIC Weathering & Erosion Transport Weathering & Erosion SEDIMENT Transport Weathering & Erosion Deposition Extrusive IGNEOUS ROCK Intrusive SEDIMENTARY Heat & Pressure Burial Heat & Pressure T Melt & Crystallize METAMORPHIC Crystallization Melting MAGMA