In the scientific sense, wood petrifies in an environment without oxygen, say when it is buried by lava, and minerals such as silica enter the wood and fill the cells, making it hard as stone. At the heart of the word petrify is the Latin word petra which means stone. Plagiarism taking credit for someone elses writing or ideas. Petrify is to make something like a stone or to literally turn to stone. вЂњPetrified woodвЂќ as used in this subchapter and sections 601 and 603 of this title means agatized, opalized, petrified, or silicified wood, or any material formed by the replacement of wood by silica or other matter. Nuance something subtle a fine shade of meaning. вЂњCommon varietiesвЂќ as used in this subchapter and sections 601 and 603 of this title does not include deposits of such materials which are valuable because the deposit has some property giving it distinct and special value and does not include so-called вЂњblock pumiceвЂќ which occurs in nature in pieces having one dimension of two inches or more. What petrify means in Punjabi, petrify meaning in Punjabi, petrify definition, examples and pronunciation of petrify in Punjabi language. No deposit of common varieties of sand, stone, gravel, pumice, pumicite, or cinders and no deposit of petrified wood shall be deemed a valuable mineral deposit within the meaning of the mining laws of the United States so as to give effective validity to any mining claim hereafter located under such mining laws: Provided, however, That nothing herein shall affect the validity of any mining location based upon discovery of some other mineral occurring in or in association with such a deposit. WHAT IS PETRIFIED WOOD To answer this question we need to travel back in time millions of years when the earth was populated with roaming dinosaurs.

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