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| A Beginner's Guide to Geology - http://hubpages.com/_ifm/hub/A-Beginners-Guide-to-Geology Describes the planet and its composition from the beginning of time. How the Earth was formed and how it is made up, from the core, through the outer core to the mantle and the crust. The rock formations, and the types of rock, their depth and the type of rock that contain the many minerals naturally available throughout the planet. |
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