METAMORPHIC ROCKS
The Story of Metamorphic Rocks
Metamorphic rocks when rocks are changed by heat and pressure.
Foliated: Visible bands | Non-Foliated: No Bands | |
Gneiss: From Granite | Quartzite: From Sandstone | |
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Metamorphic
rocks tend
to be more dense than the rocks the came from. |
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Gniess has thick light & dark bands | Quartzite contains quartz, hardness = 7 | |
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Schist: This Sample Has Mica | Marble: From Limestone | |
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Regional
Metamorphism covers large areas and is more intense.
Contact Metamorphism covers less area and is less drastic. |
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Schist has thin wavy bands | Marble contains calcite = fizzes in acid | |
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Slate: From Shale | ![]() |
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Slate is very-fine with microscopic bands | ||
ROCK: a group minerals bound together
Light Colored Quartz | Dark Colored Biotite Mica | Pink Colored Feldspar |
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All Three Are In Igneous Granite | All Three Are In Sedimentary Sandstone | All Three Are In Gneiss |
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