This preview shows page 1. Sign up to view the full content.
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...
View Full Document
- Fall '08