Large Petrified Wood Bookends, Conifer 04f3b45e9e703f4758f14246ebe56ddf having tops in the shape

having tops in the shape of funnels) was a culture in the Neolithic

commonly schist

Knightia are in the same family as herring and sardines

Because Halite is water soluble

banded variety of Agate

Large Petrified Wood Bookends, Conifer 04f3b45e9e703f4758f14246ebe56ddf having tops in the shapeFrom ancient Greek meaning "wood turned into rock", Petrified Wood is a form of fossilization where all the organic matter combines with minerals (usually a silicate, such as quartz) during a process called per mineralization. In order for wood to become petrified it must be completely covered by sediment, thereby depriving the wood of oxygen. Simultaneously, there must be a mineral rich water source close by. Over time, the water delivers the