Question: How does the rate of cooling of a magma
How does the rate of cooling of a magma affect grain size of the resultant rock, and why? (See Fig. 3.4.)
Answer to relevant QuestionsSee the microscopic view of igneous rocks in Fig. 3.6. Which rock cooled the slowest and which cooled the fastest?A layer of granite 1 m thick is present in a sequence of sedimentary rocks, parallel to the bedding in the sedimentary rocks (Fig. 3.8). Is it a dike, a sill, or a stock?What coarse-grained (plutonic) rock consists of abundant calcic plagioclase plus olivine and pyroxene?Mt. Somma (ancestral Mt. Vesuvius), which towered above the Roman seaside resort cities of Pompeii and Herculaneum, hadn’t erupted for 800 years, when in A.D. 79, it erupted. What happened to the two cities?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 ...
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