| petrified |
petrification: the process by which organic matter is fossilised by the infiltration of water and the deposition of dissolved minerals. The Petrified Forest in Arizona, USA is a famous example. Here many trees have been completely converted to stone (lithified), but all the features of the wood have been perfectly preserved.
출처: www.sedgwickmuseum.org/education/glossary.html
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| petroleum |
A mixture of liquid, gaseous, and solid hydrocarbon compounds found naturally underground. The liquid form of petroleum is called crude oil. Petroleum can be processed (refined) into a number of useful products including asphalt, diesel fuel, fuel oil, gasoline, jet fuel, lubricating oil, and plastics.
출처: www.uwsp.edu/cnr/wcee/keep/Mod1/Unitall/definition...
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| petrifaction |
a fossilization process whereby inorganic matter dissolved in water completely replaces original organic mater, converting it to a stony substance.
출처: www.baylink.org/fieldtrips/glossary.html
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| petroleum |
A generic term applied to oil and oil products in all forms, such as crude oil, lease condensate, unfinished oils, petroleum products, natural gas plant liquids, and non-hydrocarbon compounds blended into finished petroleum products.
출처: www.natsource.com/markets/index.asp
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| petroleum |
is a naturally occurring liquid mixture of hydrocarbons believed to have originated from plant and animal matter buried long ago.
출처: www.dac.neu.edu/physics/b.maheswaran/phy1121/data/...
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