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ROCK IDENTIFICATION

ROCK IDENTIFICATION

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ROCK IDENTIFICATION

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  1. ROCK IDENTIFICATION Liz LaRosa http://www.middleschoolscience.com 2009

  2. What type of rock is this? Where or how is it formed?

  3. Marble • Metamorphic • Non-Foliated • Calcium Carbonate • Metamorphism of Limestone

  4. What type of rock is this? Where or how is it formed? Image Source

  5. Limestone • Sedimentary • Calcium Carbonate • Forms in clear, warm, shallow marine waters • Forms from the accumulation of shell, coral, algal and fecal debris

  6. What type of rock is this? Where or how is it formed?

  7. Granite • Intrusive Igneous Rock • Most are Felsic • Coarse Grained, can see crystals • Contains quartz and feldspar

  8. What type of rock is this? Where or how is it formed?

  9. Gneiss • Metamorphic • Foliated • Feldspar

  10. What type of rock is this? Where or how is it formed? Image Source

  11. Coal • Organic Sedimentary Rock • Formed from plant remains

  12. What type of rock is this? Where or how is it formed?

  13. Obsidian • Extrusive Igneous Rock • Very quick cooling molten rock (lava) • Glassy • No crystals formed

  14. What type of rock is this? Where or how is it formed? Image Source

  15. Sandstone • Sedimentary Rock • Formed by the action of wind, water, and ice on older rock • Quartz cemented by silica or lime • Most form in shallow seas

  16. What type of rock is this? Where or how is it formed?

  17. Pumice • Felsic Extrusive Igneous Rock • Quick cooling molten rock (lava) • No crystals formed • Many holes formed - gasses released • Floats on water

  18. What type of rock is this? Where or how is it formed?

  19. Scoria • Mafic Extrusive Igneous Rock • Forms as a frothy crust on the top of a lava flow or as material ejected from a volcanic vent and solidifying while airborne • No crystals formed • Many holes formed - gasses released

  20. What type of rock is this? Where or how is it formed?

  21. Basalt • Mafic Extrusive Igneous Rock • Formed from dark dense lava • Pyroxene, plagioclase feldspar • Fine grained

  22. What type of rock is this? Where or how is it formed?

  23. Slate • Foliated Metamorphic Rock • Metamorphism of Shale • Breaks into thin “slices”

  24. What type of rock is this? Where or how is it formed?

  25. Hornfels • Non-Foliated Metamorphic Rock • Fine grained crystals • Metamorphism of clays or shales

  26. What type of rock is this? Where or how is it formed?

  27. Conglomerate • Sedimentary Rock • Rounded pebbles ¼ inch or larger cemented together • Formed near moving water • Quartz, quartzite

  28. Review Can you compare and contrast the following sets of rocks? • Limestone and Marble • Granite and Gneiss • Obsidian and Coal • Sandstone, Pumice, and Scoria • Basalt, Hornfels, and Slate • Conglomerate and all the other rocks