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Petrified Forest National Park The Petrified Forests located in Arizona and has six forests of petrified wood in the park Some of the stone wood is 6 foot around and 100 feet long CD 2002 One of the logs even forms a natural archway that looks like a bridge There are many sources for learning about petrified wood Some of the sources I found helpful were books internet sources and the encyclopedia all including information about Petrified Forest National Park The wood is made up of tree trunks and fallen logs that were buried in volcanic ash mud or sand ages ago and have turned into stone There is no bark or limbs on the trees but the wood has been reserved so well that you can still see insect tunnels and lightning scars The petrifying process is caused by water that carries dissolved mineral matter Tidwell 1999 p 328 The water infiltrates the mud and sand into the buried logs where it fills up the empty cells of the rotting logs The water is full of silica that it dissolved from volcanic ash As the silica water fills up the cells of the logs it crystallizes into mineral quarts or opal Trees to Stone p2 Making the logs even more beautiful iron rich mineral deposits seeped into the logs during the fossilization process and a rainbow of colors became a permanent masterpiece for us to see This process fossilizes the log in such an exact way that the surface of the log is exactly as it was millions of years ago One might ask if these logs were buried about 250 million years ago how are we able to see them today Well thousands of the logs are probably still buried but some of the logs were brought to the surface through a combination of uplifting and erosion Over time earth lifts up and as rains rivers and winds wash away
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