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岩石依其形成的原因,可以分為火成岩、沈積岩和變質岩三種類型。 PowerPoint PPT Presentation


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岩石. 岩石依其形成的原因,可以分為火成岩、沈積岩和變質岩三種類型。. 火成岩,是岩漿侵入地殼上部的岩層中或噴出地表後冷凝而形成的岩石。. 火成岩. 花崗岩. 安山岩. 玄武岩. 沈積岩,是沈積物固結而成的岩石。. 沈積岩. 礫岩. 砂岩. 石灰岩. 變質岩,是原來的沈積岩或火成岩,在高溫、高壓下發生變質作用而形成的岩石。. 變質岩. 片麻岩. 大理岩. 就體積來說,組成地殼的岩石中,火成岩占最多數,沈積岩最少,而露在地球表面最多的岩石,則是沈積岩,約占地表總面積的 3/4 。. 那麼,岩石和礦物有何不同.

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岩石依其形成的原因,可以分為火成岩、沈積岩和變質岩三種類型。

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