Difference between revisions of "Petroleum"

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m (Coal's a fossil fuel too)
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Oil deposits are often found in concurrence with [[natural gas]] in a variety of geological structural or [[stratigraphy|straigraphic]] traps.  
 
Oil deposits are often found in concurrence with [[natural gas]] in a variety of geological structural or [[stratigraphy|straigraphic]] traps.  
  
[[Geologists]]s have deduced that petroleum is the remains of huge amounts of algal material that was laid down millions of years ago, and altered in form under high temperatures and pressures. Layers of buried plant material tend to produce [[coal]] or lignite.  
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[[Geologists]] have deduced that petroleum is the remains of huge amounts of algal material that was laid down millions of years ago, and altered in form under high temperatures and pressures. Layers of buried plant material tend to produce [[coal]] or lignite.  
  
 
A minority belief is that petroleum is synthesized naturally by unspecified underground processes, slowly rising towards the surface for our use.
 
A minority belief is that petroleum is synthesized naturally by unspecified underground processes, slowly rising towards the surface for our use.
  
 
[[category:geology]]
 
[[category:geology]]

Revision as of 10:30, 7 August 2008

Petroleum, named for "rock oil", is a fossil fuel usually found deep within the earth, although some deposits are very close to the surface.

It is a heavy dark liquid, consisting of many different hydrocarbon compounds. Crude oil is extracted from the ground and fractionated into its components by volatility in an oil refinery. Some of the main products distilled from crude oil are:

Oil deposits are often found in concurrence with natural gas in a variety of geological structural or straigraphic traps.

Geologists have deduced that petroleum is the remains of huge amounts of algal material that was laid down millions of years ago, and altered in form under high temperatures and pressures. Layers of buried plant material tend to produce coal or lignite.

A minority belief is that petroleum is synthesized naturally by unspecified underground processes, slowly rising towards the surface for our use.