White Pine Petrified Wood Round Slice | OregonOregons high desert has yielded some of North Americas finest petrified wood, formed during the Miocene epoch when volcanic activity buried ancient forests beneath layers of ash and sediment. As silica rich groundwater permeated the wood over millions of years, it replaced each cell with quartz preserving the trees structure in extraordinary detail while transforming it into stone harder than steel. This round slice of White Pine captures that process