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Rocks and the Rock Cycle

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Presentation on theme: "Rocks and the Rock Cycle"— Presentation transcript:

1 Rocks and the Rock Cycle

2 Let’s Review!! Grains Texture Extrusive Intrusive Porphyritic Sediment
Erosion Deposition Compaction Cementation Clastic rock Organic rock Chemical rock Foliated

3 Sedimentary Rock Form from particles (sediments) deposited by wind and water. Sediment undergoes the cycle of Erosion, Deposition, Compaction, and Cementation (or lithification) There are three main types of Sedimentary rocks Clastic, Organic, and Chemical

4 Sedimentary Rock How Sediments are Deposited
Clastic Sedimentary Rock Forming Clastic Sedimentary Rock Forming

5 Igneous Rock Any rock that forms from magma or lava. (fire rock)
Can be extrusive or intrusive. Classified according to its: Origin (Intrusive/Extrusive) Texture (fine/coarse grained, porphyritic, etc.) Mineral Composition (silica content)

6 Igneous Rock How Igneous Rock Forms

7 Metamorphic Rock Changed Rock
Heat and pressure change any rock into metamorphic. Classified by the arrangement of the grains: Parallel bands: foliated Randomly: non-foliated

8 Metamorphic Rock Metamorphic Rocks Forming


10 Rock Cycle Forces inside Earth and at the surface produce a rock cycle that builds, destroys, and changes the rocks in the crust.

11 Rock Cycle The rock cycle is the series of processes on and beneath the Earth’s surface that slowly change rocks from one kind to another.

12 Rocks Changing Any rock can become any other rock in the rock cycle.

13 The rock cycle can progress through many different pathways.
One example might include: molten rock spews from a volcano and cools forming igneous rock, which gets eroded and deposited as sedimentary rock which gets pushed down further into the crust and becomes metamorphic.

14 Tell the Pathways

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