EVERYDAY SCIENCE

Detailed explanation-1: -Reason for sedimentary rocks to be the only rock type to contain fossils: The dead plants and animals, where they are buried by more sediment results in the accumulation of minerals from water in bones which leads to formation of fossils. This makes sedimentary rocks the only rock type to contain fossils.

Detailed explanation-2: -Metamorphic rock, such as marble, is formed by tremendous heat and pressure. Fossils are not usually found in either igneous or metamorphic rocks.

Detailed explanation-3: -Igneous rocks are made from cooling of lava or magma. Igneous rocks are too dense to contain fossils.

Detailed explanation-4: -Fossils are commonly found in sedimentary rocks. Sedimentary rocks are the most common type of rock since they are formed by the earth’s natural forces like wind and water. Q. Sometimes igneous and sedimentary rocks are changed into metamorphic rocks.

Detailed explanation-5: -Why are fossils only found in sedimentary rocks? Heat destroys or deforms the fossils as igneous and metamorphic rocks are formed. Sediments cover the remains of an organism and turn to sedimentary rock.