beautiful oldest rocks |
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| navigate by keyword : aggregate asthenosphere autumn beautiful categorized cave chemical cliff composition core crust earth eautiful form formation formed geology included interior layer leaf liquid magma mass matter mineraloid minerals naturally nature occurring oldest outer plant pockets rock rocks soil solid stone terrain tree trunk wadi wall water wilderness wood |
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| A rock (or stone) is any naturally occurring solid mass or aggregate of minerals or mineraloid matter. It is categorized by the minerals included, its chemical composition, and the way in which it is formed. Rocks form the Earth's outer solid layer, the crust, and most of its interior, except for the liquid outer core and pockets of magma in the asthenosphere. |
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