* Pumice Formation: Pumice is a volcanic rock formed from frothy, gas-rich lava. It's lightweight and porous due to the trapped gas bubbles.
* Fossil Formation: Fossils form when organic matter (like bones, shells, or plants) is buried in sediment and undergoes a long process of mineralization.
* Incompatible Environments: The high heat and rapid cooling associated with volcanic eruptions would destroy any organic matter present. The environment where pumice forms is not conducive to preserving fossils.
Think of it this way: Fossils need a quiet, stable environment to form. Pumice is the result of a violent, destructive event.