Kerogen

Solid, waxy mixture of rock is heated to high temperatures, the kerogen is vaporized. The vapor is condensed and then sent to a refinery to produce gasoline, heating oil, and other products. See oil shale, ...

kerogen

complex mixture of compounds with large molecules containing mainly hydrogen and carbon but also oxygen, nitrogen, and sulfur. It is the organic ... [4 related articles]
Found on http://www.britannica.com/eb/a-z/k/23

kerogen

Aged and degraded carbon that was once assimilated by living organisms; for example, the molecules found in coal.
Found on http://www.daviddarling.info/encyclopedia/K/kerogen.html

Kerogen

Kerogen (Greek κηρός `wax` and -gen, `that which produces`) is a mixture of organic chemical compounds that make up a portion of the organic matter in sedimentary rocks. It is insoluble in normal organic solvents because of the high molecular weight (upwards of 1,000 daltons or 1000 Da; 1Da= 1 atomic mass unit) of its component compounds....
Found on http://en.wikipedia.org/wiki/Kerogen

kerogen

A mixture of organic substances found in many fine-grained sedimentary rocks and a major constituent of oil shale.
Found on http://www.scientificpsychic.com/etc/geology-glossary.html

Kerogen

A mixture of organic substances found in many fine-grained sedimentary rocks and a major constituent
Found on http://www.encyclo.co.uk/local/22392
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