ACTIVITY S.7 Thin Section Analysis and Bowen\'s Reaction Series A shin section o

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ACTIVITY S.7 Thin Section Analysis and Bowen's Reaction Series A shin section of a rock can be made by grinding oe side of a fat ghing the lat side o a glas ie nd so chin that ligh passes theough it. The thin section is then viewed with Date: section and hold it perpendicular so the first pait, then you ane vireing the dhin soxtios through com pelaried g pinling k T pla plag are crystais ot Thin section 1: This thin orystai of olivine oThnrystal once whbe to section has a in plane polarized had a gray 9 cryaital in ·s but is now surrounded and partly replaced by the (px), which has a rich aodum by zones and crystal Pyroxene is pale brown n plane polarzed ight, but yellow.. toerarg-troen n cross polarized light. The other white to light gray crystals in this rock are plagioclase (plag). equally rich in both calcium and 1 mm sodumboth caloum A. Based on Bowen's Reaction Serics (FIGURE 5.3), explain as esactly as you can what nuy have caused the relalinak olivine and pyroxcne observed in thin section 1. Based on Bowen's Reaction Series (FIGURE 5.3. explain as eraaly as you canwhat may have caused t-1 crystal in thin section 2 to be zoned as it is nlat B. Bowen's Reaction Series REFLECT&DISCUSS; circle and label the parts of this Bowen's Reaction Series diagram to indicate the exact path of crystallization and reaction represented in thin section 1, and then 2. Refer to FIGURE 5.6 as needed Based on your work above. C. Pyroxone (ps) Amphboleteidipar Botte + Musoovite Ouatz Putassarn fekhpar(K.spur)

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