Rock TYPEs and the Rock Cycle. ROCK TYPES. Rocks are classified by how they form. There are 3 main rock types: Igneous , Sedimentary and Metamorphic Each type has several subtypes. IGNEOUS ROCKS - FORMATION/PROCESSES:. IGNEOUS ROCKS - SUBTYPES & ORIGIN:.
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ROCK TYPES • Rocks are classified by how they form. • There are 3 main rock types: Igneous, Sedimentary and Metamorphic • Each type has several subtypes.
IGNEOUS ROCKS - TEXTURAL FEATURES, MINERAL COMPONENTS: crystals = grains/grain sizes **The slower the cooling rate of magma the larger the crystals!
Pumice, Obsidian, BasaltIgneousEXTRUSIVERocks pumice obsidian basalt
GraniteIgneousINTRUSIVERock • Granite is found in many colors due to the change in chemical composition caused by the trace elements found within and around it
Sandstone, Shale, ConglomerateClasticSedimentary Rocks sandstone shale conglomerate
Limestone, Coal, Coral Reefsnonclastic(Organic)Sedimentary Rocks limestone (shells) (coal) (coral reefs)
Gypsum, Rock Salt, Limestone (caves)nonclastic(Chemical) Sedimentary Rocks (Gypsum ) Rock Salt Limestone (caves) (& precipitate in seawater)
Slate, Schist, GneissFoliatedMetamorphicRocks Slate Schist Gneiss (from shale) (from phyllite) (from granite)
Marble, QuartziteUnfoliatedMetamorphic Rock Marble Quartzite (from limestone) (from sandstone)
THE ROCK CYCLE Lava • The continuous changing of rocks from one kind to another over long periods of time. Write the definition of the Rock Cycle underneath the diagram. Use the diagram to complete the rock cycle on your worksheet. Answer the questions on your worksheet.