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【2017年整理】二岩石组成与岩石物理性质1.ppt

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岩脉、围岩、捕掳体 昌乐—临朐 火山口奇观:柱状节理 2、沉积岩 尽管火成岩占据了地壳总体积的95%之多,但在地壳表层分布最广泛的却是沉积岩。 沉积岩覆盖了大陆面积的75%(平均厚度为2km) 和几乎全部的海洋地壳(平均厚度为1km)面积。 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. physical weathering Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Chemical weathering Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Biologic weathering Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Mechanical deposit Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Chemical deposit Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Chemical deposit Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. welding cementing Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. crystallization replacement Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 沉积岩是成层堆积的松散沉积物固结而成的岩石。也就是说,它是早先形成的岩石破坏后,又通过物理或化学作用在地球表面(大陆和海洋)的低凹部位沉积,经过压实、 胶结再次硬化,形成的具有层状构造特征的岩石。 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 沉积岩的种类很多,但若考虑到矿物颗粒的大小以及矿物成分等方面的因素,则可以将沉积岩分为砂岩、页岩和石灰岩三类。 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. * * 第一节 岩石的组成与结构 一、岩石的组成 地壳(earth‘s crust )是由岩石组成的,岩石又是由矿物组成的,那么矿物又是由什么组成的呢?是由组成地壳的化学元素:O、Si、Al、Fe、Ca、K、Na、Mg等的化合物组成的,天然产出的这些元素的化合物即为矿物。 第二章 岩石组成与岩石物理性质 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client P
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