Why can't fossils form in igneous and metamorphic rocks?

Answer 1

because metamorphic rock is formed through a combination of extremely high heat and pressure which would destroy any fossils in it and igneous rock is formed through extremely high heats which would also most likely destroy fossils.

Answer 2

It would be impossible for evidence of an organism to survive in an environment of temperatures necessary for magma creation. Fossils are sometimes found in metamorphic rock, but only rarely. High temperatures and pressures associated with many metamorphic processes would normally destroy fossil evidence that existed in sedimentary rock.

Answer 3

Fossils do form in Igneous rock, lava flows have been known to preserve trees, humans and over animals. The lava only leave empty spaces which are known as moulds, if plaster is poured into the space a cast of the original being will be formed

Answer 4

This is because they are not strong/hard enough to withstand the heat and pressure required/involved during igneous rocks formation. Fossils are not resistant to extreme temperatures so they dont survive, but instead are destroyed and mix with the magmatic melt.

Answer 5

Fossils can't form in igneous and metamorphic rocks because the extreme heat and pressure during their formation would destroy any organic remains. These processes alter rocks to the point where they erase any trace of fossils that may have been present. Fossils are more likely to be preserved in sedimentary rocks where conditions are more favorable for their formation and preservation.

Answer 6

Igneous rock is rock that has cooled from a molten state. Molten rock is so hot that it will generally destroy any organism that it comes in contact with rather than preserving it.