Refer to Fig. 3.3 Which has been introduced as the order of crystallization of minerals out of a mafic magma. More specifically, it is known as Bowen’s Reaction Series, with one side depicting discontinuous reactions of minerals with the remaining magma and the other side depicting a continuous reaction of minerals with the remaining magma. What does it tell us about (a) plagioclase and (b) olivine, pyroxene, and hornblende?
Answer to relevant QuestionsNote the columnar joints in igneous rocks in Figs. 3.14 and 3.17. What causes them to form, and how are they oriented relative to the shape of the body?What causes chemical weathering?Which minerals does the chemical weathering process called oxidation affect most readily?When a biotite granite weathers in a temperate climate, what cations may be carried away to the ocean?Why are clay minerals essential for a good soil?
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