8In which type of rock are you most likely to find fossils?
Question
8In which type of rock are you most likely to find fossils?
Solution
You are most likely to find fossils in sedimentary rocks. Here's why:
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Fossils are the remains or traces of ancient life that have been preserved by natural processes, from shells and bones to imprints of leaves and footprints.
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For a fossil to form, several conditions have to be met. First, the remains of the organism must be quickly buried to protect them from being destroyed by weathering or scavengers.
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Sedimentary rocks are formed from particles of sand, shells, pebbles, and other fragments of material. Over time, these particles accumulate in layers and harden into rock.
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Most fossils are found in sedimentary rock. This is because the processes that form sedimentary rock often involve water, which can carry small pieces of other rocks and organic material into the place where the sedimentary rock is forming.
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When an organism dies in or near water, its remains can be quickly covered by this sediment. Over time, the sediment hardens into rock and the remains of the organism are preserved as a fossil.
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In contrast, igneous rocks are formed from the cooling and solidification of magma or lava, and metamorphic rocks are formed under the surface of the earth from the metamorphosis (change in form) of existing rock due to high temperatures and pressure. These conditions are not conducive to the preservation of organic material
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