Petrified wood is made through the process called petrofication. The process requires wood, water and mud. The mud that covers the wood contains volcanic ash which is the key ingredient on petrofication. As the ash decomposes it releases ch...
http://answers.ask.com/Science/Nature/how_is_petrified_...
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I've heard stories of wooden fence posts becoming petrified over time, but I'm not sure if this is scientifically possible. How is petrified wood formed, and what exactly does it consist of? ... Petrified wood is literally where the wood has been replaced by minerals. Sometimes it has a vague sort of woody texture,
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www.thenakedscientists.com/HTML/content/questions/quest...
www.thenakedscientists.com/HTML/content/questions/question/2223/
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Wood is petrified when the the tree is covered with sediments and the organic material contained within is gradually replaced with minerals, usually silicate minerals.
http://wiki.answers.com/Q/How_does_petrified_wood_form
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name Lucas H. status student age 8 Question - How is petrified wood formed? ----------------- A tree or log becomes buried in mud and water. Gradually over time the dissolved minerals in the water replace the minerals in the wood and the wood becomes silicified (turns to stone).
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www.newton.dep.anl.gov/askasci/env99/env233.htm
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Petrified wood is formed when the original wood is replaced atom by atom with silica untill there is no wood left. It retains the original stucture of the wood with the year rings and all. ... Wood opal is formed by the replacement of the wood by siliceous material. Ancient forests which became immersed ... Thus petrified wood,
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www.mineralgallery.co.za/woodopal.htm
www.mineralgallery.co.za/woodopal.htm
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How is Petrified Wood formed? ... I have indeed found many petrified wood collection sites in the Ashford Hills associated with the Ohanapecosh formation but they were different in three ways. The fossil wood of the Ashford hills is in situ, it is still weathering out of the welded tuff where it was formed.
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www.mashell.com/~estrauss/pwoodfx.html
www.mashell.com/~estrauss/pwoodfx.html
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One of the greatest concentrations of petrified wood in the world is found in the Petrified Forest National Park in northeast Arizona. ... As the water seeped into the wood the chemicals from the volcanic ash reacted to the wood and formed into quartz crystals. As the crystals grew over time, the wood became encased in...
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www.desertusa.com/mag00/jan/papr/rock.html
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Below you see a cross section of a piece of calcified, petrified wood. The white dots at the red arrows are actually small glitters of shiney crystals that were difficult to photograph. However, these are actually well formed calcite crystals that are in the grain of the wood itself.
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www.yourgemologist.com/Kids/petrifiedwood/petrifiedwood...
www.yourgemologist.com/Kids/petrifiedwood/petrifiedwood.html
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Subject: Petrified wood ... How is petrified (fossilized) wood formed? ... Re: Petrified wood...
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www.madsci.org/posts/archives/may96/832042070.En.q.html
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