5. A rock with layers and fossils is likely to be a __________________________ rock. Group of answer choices Igneous intrusive Igneous extrusive Sedimentary Metamorphic
There are three kinds of rocks on Earth they are igneous sedimentary and metamorphic rock.
Igneous rocks are formed from the cooling of magma either above the surface or below it. When they form above theesurface we call it extrusive rock and when they form below the surface we call it intrusive rocks. They contain an interlocking texture where grains fuse together.
They are devoid of any fossils due to their temperature of formation. The temperature of magma is generally 700 °C and above. They do have bedding planes and layerings.
Sedimentary rocks form from the deposition and lithification of sediments. Sediments are formed from the weathering and erosion of the pre-existing rocks. They show distinct layerings and bedding planes are common. When organisms died they deposited on the ocean floor which produces fossils.
Metamorphic rocks are formed by the solid state transformation of the rock. Temperature and pressure play an important role in the formation of metamorphic rocks. Metamorphic rocks are also devoid of any fossils, layering and beddings. Metamorphic rocks start to form at 150 °C. At such high temperatures any organic remains would be destroyed.
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