1 / 4

Understanding the Rock Cycle: Hutton's Theory and Rock Types

The rock cycle is a continuous process where rocks are transformed from one type to another. Hutton's big idea of uniformitarianism explains that geologic processes occurring today have also occurred in the past. There are three main types of rocks: igneous rocks formed by volcanic activity (e.g., granite, obsidian), sedimentary rocks created from compacted sediments and often containing fossils (e.g., sandstone, limestone), and metamorphic rocks altered by heat, pressure, and chemicals (e.g., marble). Key processes include volcanic activity, erosion, deposition, heat, pressure, and melting.

moe
Télécharger la présentation

Understanding the Rock Cycle: Hutton's Theory and Rock Types

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Section 8-1 The Rock Cycle

  2. Hutton’s Big Idea • Uniformitarianism • Geologic process that occur today also occurred in the past • Example: erosion today also occurred the same way in the past

  3. Types of Rocks • There are three main groups of rocks • Igneous • Caused by volcanic activity • Granite, obsidian, pumice • Has crystals, looks like glass, or has holes • Sedimentary • When sediments (small particles of rock) get cemented or pressed together • Only type of rock to contain fossils • Sandstone, limestone • Can see particles or fossils • Metamorphic • Rock formed by intense heat, pressure, and chemical changes • Serpentine, marble • Green, striations (lines)

  4. The Rock Cycle • Rocks are “recycled” from one type of rock to another due to forces on earth • Volcanic Activity • Molten rock (magma and lava) cool above or below earth’s surface • Erosion • Weathering causes rock to wear down • Deposition • Particles are transported by water and settle • Heat and Pressure • The deeper rock is, the higher the pressure and heat. This changes the chemistry of the rock • Melting • Heat melts rock into lava and magma

More Related