CC
FROM THE INTERNET:
Abiogenic petroleum origin is a hypothesis that was proposed as an alternative mechanism of petroleum origin. It was popular in the past, but most geologists now consider it obsolete, and favor instead the biological origin of petroleum. According to the abiogenic hypothesis, petroleum was formed from deep carbon deposits, perhaps dating to the formation of the Earth. Supporters of the abiogenic hypothesis suggest that a great deal more petroleum exists on Earth than commonly thought, and that petroleum may originate from carbon-bearing fluids that migrate upward from the mantle. The presence of huge amounts of methane on Saturn's moon Titan and in the atmospheres of Jupiter, Saturn, Uranus and Neptune is cited as evidence of the formation of hydrocarbons without biology.
Celtic Conservative: I think that petroleum is MOST finite. Once it and our U.S. coal is gone, we will have a problem. The Russians will also run out of coal about the same time!
http://www.fromthewilderness.com/free/ww3/011205_no_free_pt2.shtml