Presentation on theme: "Classifying Rocks Igneous Metamorphic Sedimentary"— Presentation transcript:
1Classifying Rocks Igneous Metamorphic Sedimentary Rock CycleClassifying RocksIgneousMetamorphicSedimentary
2Sedimentary RockSediment is weathered, eroded, deposited, compacted, and cemented to make sedimentary rock.Examples:SandstoneConglomerateLimestoneshale
3Igneous Rock Rock material is melted an cooled. Magma underground is made of melted rock.If the magma cools slowly underground, its crystals will be large. Example: graniteIf the magma erupts from a volcano, the molten rock is called lava. Lava cools quickly, so crystals will be very small. Examples: pumice, scoria, obsidian
4Metamorphic RockThis type of rock was once another type of rock that was changed due to extreme heat and pressure, but not melting.Magma underground that is near the rock heats it up, but does not melt it.The rock recrystallizes. Examples:Limestone becomes marbleGranite becomes gneissShale becomes slateSandstone becomes quartzite.