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Line 1: − '''Oil shale''' is a dark-colored [[shale]] containing [[organic]] material that can be crushed and heated to liberate gaseous [[hydrocarbon]]s. The kerogen in oil shale can be converted to synthetic crude oil through the chemical process of pyrolysis.+ + + + + + + + + + + + + +
Corrected error (oil shale isn't always actually shale), and added a bit more info to the stub.
Oil shale is a class of [[sedimentary rock]] (not necessarily [[shale]]) that contains significant amounts of Kerogen, a waxy substance from which [[oil]] can be obtained through a process called pyrolysis. The worldwide oil reserves contained in oil shale are estimated to be in the region of three trillion barrels, but obtaining this oil is both economically and environmentally expensive [http://www.eia.doe.gov/oiaf/archive/aeo06/pdf/0383(2006).pdf] - a problem that has limited its use to date <ref name=aeo2006>
{{cite
| author = World Energy Council
| title = Annual Energy Outlook 2006
| publisher = Energy Information Administration
| date = February 2006
| url = http://www.eia.doe.gov/oiaf/archive/aeo06/pdf/0383(2006).pdf
| format = PDF
| accessdate = 2008-04-18
}} ([http://www.eia.doe.gov/oiaf/archive/aeo06/pdf/0383(2006).pdf web])</ref>.
{{reflist}}
[[category:Geology]]
[[category:Geology]]