* Fossil Formation: Fossils are typically formed in sedimentary rocks. This happens when organisms are buried quickly in sediment (like sand, mud, or silt) and the sediment hardens over time.
* Igneous Rock Formation: Igneous rocks form from the cooling and solidification of molten rock (magma or lava). The extreme heat involved in their formation would destroy any existing organic remains.
Other Rock Types and Fossils:
* Sedimentary Rocks: These are the most common rocks containing fossils. Examples include limestone, sandstone, and shale.
* Metamorphic Rocks: Fossils can sometimes be found in metamorphic rocks, but the intense heat and pressure involved in their formation can often distort or destroy the fossils.
In short: While fossils can be found in some metamorphic rocks, they are almost never found in igneous rocks because the intense heat involved in their formation would destroy any existing organic remains.
