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Unformatted text preview: 2. Xenoliths from deep-rooted volcanoes (i.e. mantle rocks) mainly made of olivine and pyroscene 3. Kimberlite Volcanoes ( erupt gas and rock CO 2 , methane) bring up olivine and diamonds 4. Ophiolites –pieces of oceanic lithosphere (includes mantle rocks below moho) that have been brought up onto edges of continents Mantle Rocks composed of Olivine Pyroxene 5. By examine Carbonaceous Chondrites—they’ve never been heated up Read Chapter 7 20:34 20:34...
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- Fall '07
- 80km, Ultramafic rock, mantle rocks, Kimberlite volcanoes, continents Mantle Rocks