Which type of rock contains fossils? Select the correct answer.(1 point)
Responses
metamorphic rock
metamorphic rock
sedimentary rock
sedimentary rock
igneous rock
igneous rock
metamorphic, sedimentary, and igneous rock
sedimentary rock
The correct answer is sedimentary rock.
The correct answer is sedimentary rock. Fossils are typically found in sedimentary rock because this type of rock is formed from the accumulation of sediment, such as sand, mud, and dead organisms, over long periods of time. The layers of sediment often preserve the remains of plants and animals, creating fossil specimens. To determine which type of rock contains fossils, we can use our knowledge of the different types of rocks and their formation processes.
Metamorphic rock is formed when pre-existing rock undergoes high temperatures and pressures, which can alter the mineralogy and texture of the rock. The process of metamorphism does not typically preserve or create fossils, so we can eliminate metamorphic rock as the correct answer.
Igneous rock is formed from the cooling and solidification of molten materials, such as lava or magma. This process usually occurs deep within the Earth or during volcanic eruptions. Since igneous rock is formed from molten materials, it does not provide the ideal conditions for fossil preservation. Therefore, we can eliminate igneous rock as the correct answer.
Sedimentary rock, on the other hand, is formed when layers of sediment are deposited and gradually compacted over time. The sediment can contain organic material, such as plants and animals, which can become fossilized as the layers of sediment harden into rock. Therefore, the correct answer is sedimentary rock as it has a higher likelihood of containing fossils compared to the other rock types.
To summarize, the type of rock that contains fossils is sedimentary rock, as it is formed from the accumulation of sediment over time, which can preserve the remains of plants and animals.