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Study Guide F2-2,3,4 Terms to know: Strata- layers of sediment Stratification- the process of sedimentary rocks arranged in layers Foliated- texture of metamorphic rock in which the mineral grains are arranged in planes or bands Extrusive- a type of igneous rock that forms as a result of volcanic activity, at or near the surface, small or no crystals present Nonfoliated- texture of metamorphic rock in which the mineral grains are NOT arranged in planes or bands Intrusive- a type of igneous rock formed from the cooling and solidification of magma beneath the surface, very large crystals Chemical Sedimentary Rock- formed from solutions of dissolved minerals, crystals are usually left behind when the liquid evaporates Organic Sedimentary Rock- formed from remains of once living organisms (coral, coral reefs, coal) Clastic Sedimentary Rock- fragments of rocks cemented together Lesson Content: -Sedimentary Rocks (Sandstone is an example) -form without heat and pressure, usually near the surface - has layers called strata formed through the process of stratification - fossils can be found in these rocks - 3 types of sedimentary rocks (clastic, chemical, organic) - 5 steps to form sedimentary rocks (Weathering, erosion, deposition, compaction/cementation, sedimentary rock) -Metamorphic Rocks (Marble is an example) -rocks changed from heat and pressure, known as metamorphism - Metamorphic rock has two textures (Foliated and Nonfoliated) - these rocks DO NOT melt -Igneous Rocks (Granite is an example) -formed from cooling magma that solidifies - if cools quickly (texture is fine-grained), if cools slowly (texture is coarse grained) - Two types of textures (Extrusive and Intrusive) -May contain crystals ***Rock Identification lab will be a part of this summative (5 rocks). Know the characteristics of each type of rock. You will be given 5 rocks to look at with a hand lens. Use your knowledge of the characteristics to identify if it is sedimentary, metamorphic, or igneous rock.