Igneous Rock Show

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Igneous Rock Show

  1. 1. HCCS-NORTHWEST COLLEGE PHYSICAL GEOLOGY 1403 IGNEOUS ROCKS
  2. 2. GRANITE <ul><li>INTRUSIVE ORIGIN </li></ul><ul><li>PHANERITIC TEXTURE </li></ul><ul><li>SILICIC MAGMA </li></ul><ul><li>CONTINENTAL CRUST </li></ul><ul><li>K-FELDSPAR, QTZ, MICA </li></ul>
  3. 3. DIORITE <ul><li>INTRUSIVE ORIGIN </li></ul><ul><li>PHANERITIC TEXTURE </li></ul><ul><li>SILICIC MAGMA </li></ul><ul><li>CONTINENTAL CRUST </li></ul><ul><li>PLAGIOCLASE, QTZ, MICA </li></ul>
  4. 4. GABBRO <ul><li>INTRUSIVE ORIGIN </li></ul><ul><li>PHANERITIC TEXTURE </li></ul><ul><li>MAFIC MAGMA </li></ul><ul><li>OCEANIC CRUST </li></ul><ul><li>BASIC “HEAVY MINERALS” </li></ul>
  5. 5. RHYOLITE <ul><li>EXTRUSIVE ORIGIN </li></ul><ul><li>APHANITIC TEXTURE </li></ul><ul><li>SILICIC LAVA </li></ul><ul><li>CONTINENTAL CRUST </li></ul><ul><li>K-FELDSPAR, QTZ, MICA </li></ul>
  6. 6. ANDESITE <ul><li>EXTRUSIVE ORIGIN </li></ul><ul><li>APHANITIC TEXTURE </li></ul><ul><li>SILICIC LAVA </li></ul><ul><li>CONTINENTAL CRUST </li></ul><ul><li>PLAGIOCLASE, QTZ, MICA </li></ul>
  7. 7. BASALT <ul><li>EXTRUSIVE ORIGIN </li></ul><ul><li>APHANITIC TEXTURE </li></ul><ul><li>MAFIC LAVA </li></ul><ul><li>OCEANIC CRUST </li></ul><ul><li>BASIC “HEAVY MINERALS” </li></ul>
  8. 8. WELDED TUFF <ul><li>EXTRUSIVE ORIGIN </li></ul><ul><li>PYROCLASTIC TEXTURE </li></ul><ul><li>SILICIC LAVA </li></ul><ul><li>CONTINENTAL CRUST </li></ul><ul><li>ROCK FRAGMENTS </li></ul>
  9. 9. VOLCANIC ASH <ul><li>EXTRUSIVE ORIGIN </li></ul><ul><li>PYROCLASTIC TEXTURE </li></ul><ul><li>SILICIC LAVA </li></ul><ul><li>CONTINENTAL CRUST </li></ul><ul><li>QTZ & ROCK FRAGMENTS </li></ul>
  10. 10. PUMICE <ul><li>EXTRUSIVE ORIGIN </li></ul><ul><li>PYROCLASTIC TEXTURE </li></ul><ul><li>SILICIC LAVA </li></ul><ul><li>CONTINENTAL CRUST </li></ul><ul><li>QTZ (GLASS & GAS) </li></ul>
  11. 11. OBSIDIAN <ul><li>EXTRUSIVE ORIGIN </li></ul><ul><li>GLASSY TEXTURE </li></ul><ul><li>SILICIC/MAFIC LAVA </li></ul><ul><li>CONTINENTAL OR OCEANIC CRUST </li></ul><ul><li>QUARTZ </li></ul>

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