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Rocks and the Rock Cycle. Lets Review!! Grains Grains Texture Texture Extrusive Extrusive Intrusive Intrusive Porphyritic Porphyritic Sediment Sediment.

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Presentation on theme: "Rocks and the Rock Cycle. Lets Review!! Grains Grains Texture Texture Extrusive Extrusive Intrusive Intrusive Porphyritic Porphyritic Sediment Sediment."— Presentation transcript:

1 Rocks and the Rock Cycle

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

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

6 Igneous Rock How Igneous Rock Forms How Igneous Rock Forms How Igneous Rock Forms How Igneous Rock Forms

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

8 Metamorphic Rock Metamorphic Rocks Forming Metamorphic Rocks Forming Metamorphic Rocks Forming Metamorphic Rocks Forming

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10 Rock Cycle Forces inside Earth and at the surface produce a rock cycle that builds, destroys, and changes the rocks in the crust. 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 Earths surface that slowly change rocks from one kind to another. The rock cycle is the series of processes on and beneath the Earths surface that slowly change rocks from one kind to another.

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

13 The rock cycle can progress through many different pathways. 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. 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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