為何在變質岩裡只有看到幾種礦物組合?? 區域變質相 砂岩分類 岩石、礦物的風化過程 岩漿、島弧系統的岩石 變質岩相可能會考 為何大多變質岩都是較老岩層，卻又可以發現新鮮的gneiss 玄武岩和花崗岩的最終產物是否相同，試述之 □calcite的生成環境和其他岩石的生成環境有何不同？ 且為何calcite一般都沒有雜質？ 4 .Define the following rocks： (1)andesite (2)gabbro (3)nephelinite (4)peridotite (5)rhyolite 5 .What will be the final products after several weathering of granites? 6 .State the parameters generally used for the classification of sandstone? 7 .What is the most voluminous sedimentary rock？Why? 8 .Define metamorphism? 9 .State the concept of metamorphic facies? 10 .Metamorphic rocks generally have a simple mineral assemblage, say, less than 5 mineral species, why? --

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