7 TH GRADE SCIENCE METAMORPHIC ROCKS. Metamorphic Means to Change Form.

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Metamorphic Rocks How a little bit of heat & pressure transform rocks!

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Presentation transcript:

7 TH GRADE SCIENCE METAMORPHIC ROCKS

Metamorphic Means to Change Form

METAMORPHIC ROCKS Heat and pressure deep beneath the earths surface can change any rock.

METAMORPHIC ROCKS Geologists classify metamorphic rocks according to the arrangement of the grains that make up the rocks

METAMORPHIC ROCKS Foliated Rocks Metamorphic rocks that have their grains arranged in parallel layers or bands (foliated) which means thin flat layering found in most metamorphic rocks Slate, schist, gneiss

METAMORPHIC ROCKS Nonfoliated rocks Mineral grains are arranged randomly. Do not split into layers Marble and quartzite