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| a sedimentary rock composed of mainly of sand-sized minerals and rock grains semented by sand or quartz |
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| Mineralized remains of ancient animals or plants preserved in sedimentary rock |
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| a type of rock that forms when pressure, heat, and fluids transform pre-existing rocks. |
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| a fine grained metamorphic rock that can be split into thin layers. |
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| Scientists who study the structure of Earth, rocks, and the processes that have shaped it. |
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| a hard crystaline metamorphic rock formed from limestone |
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| a extremely hard, dense, igneous rock that has a visiblly crystalline texture. |
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| The process by which water, ice, wind, or gravity move weathered rocks or soil. |
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| a readily combustable black sedimentary rock formed from prehistoric plant remains. |
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| The type of rock that forms from the cooling of molten magma or lava. |
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| The type of rock that forms when layers of sediments harden over millions of years. |
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| Natural chemical and mechanical processes that break down rocks into smaller particles and soil. |
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