Rocks what are the different types and how

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

EXTRUSIVE igneous rocks are from cooled lava on the surface of the earth. Igneous rocks form from molten rock cooling and hardening on OR below 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.

1 2 Rocks that when particles of Howform are they formed? 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 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 19

Cools slowly inside the earth IGNEOUS ROCK Intrusive Crystallization MAGMA 20

Cools quickly on the earth’s surface Extrusive IGNEOUS ROCK Intrusive Crystallization MAGMA 21

Weathering & Erosion Extrusive IGNEOUS ROCK Intrusive Crystallization MAGMA 22

Weathering& Erosion SEDIMENTS Extrusive IGNEOUS ROCK Intrusive Crystallization MAGMA 23

Weathering& Erosion SEDIMENT Transport Deposition Extrusive IGNEOUS ROCK SEDIMENTARY Intrusive Crystallization MAGMA 24

Weathering & Erosion SEDIMENT Transport Deposition Extrusive IGNEOUS ROCK SEDIMENTARY Intrusive Crystallization MAGMA 25

Weathering & Erosion SEDIMENT Transport Deposition Extrusive IGNEOUS ROCK SEDIMENTARY Intrusive Burial Heat & Pressure Crystallization METAMORPHIC MAGMA 26

Weathering & Erosion SEDIMENT Transport Extrusive Deposition Can you see IGNEOUS ROCK any shortcuts? SEDIMENTARY Intrusive Burial Heat & Pressure Crystallization METAMORPHIC Melting MAGMA 27

Weathering & Erosion SEDIMENT Transport Weather /Erode into sediments - Sedimentary Deposition Extrusive IGNEOUS ROCK SEDIMENTARY Intrusive Burial Heat & Pressure Crystallization T METAMORPHIC Melting MAGMA 28

Weathering & Erosion SEDIMENT Transport Deposition Extrusive IGNEOUS ROCK Intrusive SEDIMENTARY Heat & Pressure - Metamorphic Burial Heat & Pressure Crystallization T METAMORPHIC Melting MAGMA 29

Weathering & Erosion SEDIMENT Transport Deposition Extrusive IGNEOUS ROCK SEDIMENTARY Intrusive Burial Melt & Crystallize into Igneous Crystallization Heat & Pressure T METAMORPHIC Melting MAGMA 30

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”.

Weathering & Erosion SEDIMENT Transport Weathering & Erosion Deposition Extrusive IGNEOUS ROCK SEDIMENTARY Intrusive Heat & Pressure Melt & Crystallize Crystallization Burial Heat & Pressure T METAMORPHIC Melting MAGMA 32