Unformatted text preview: earth is chemically zoned. Speed of light (km/sec) = 299792.458 km/s 1 kb = 3 km, so center of earth for kb is radius / 3 The average density of the earth is 5.1 g/cc^3 Rhyolite and Granite are associated with high silica contents Volume of a sphere is 4/3 pi r^3 – so volume of earth is 1.08 e12 Rocks – aggregate of minerals Igneous, Sedimentary, Metamorphic If all igneous rocks were analyzed the two most would be basalt and Rhyolite (with relation to SiO2) • Bowen Reaction Series o Starts high temperature at the top, low temperature at the bottom o Left side of the Y is discontinuous, right side is continuous. o Olivine -> Pyroxine -> Amphibole -> Biotite on the left side o Calcium Rich -> Plagioclase -> Sodium Rich on the right side o Orthoclase -> Muscovite -> Quartz on the stem o Starts around 1400 degrees and goes toward 800 near the end o Nd = 3a Sin (Theta) o...
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- Fall '08
- Geology, Granite, Bowen Reaction Series