Episode 3 begins to examine the world of sedimentary rocks by looking at how clastic sedimentary rocks form. Various food stuffs of different grain sizes are used to demonstrate the relationship between rock name and grain size. Composite rocks are demonstrated from cereal and granola bars using grains of mixed sizes to show how variability in clastic rocks occurs in nature. A brief description of the sedimentary rock cycle from weathering and erosion, to sediment transport, to deposition in a basement and final burial and compaction are discussed.
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