The abiogenic petroleum origin hypothesis proposes that most of earth's petroleum and natural gas deposits were formed inorganically, commonly known as abiotic oil.[1] Scientific evidence overwhelmingly supports a biogenic origin for most of the world's petroleum deposits.[2][3] Mainstream theories about the formation of hydrocarbons on earth point to an origin from the decomposition of long-dead organisms, though the existence of hydrocarbons on extraterrestrial bodies like Saturn's moon Titan indicates that hydrocarbons are sometimes naturally produced by inorganic means. A historical overview of theories of the abiogenic origins of hydrocarbons has been published.[3]
Thomas Gold's deep gas hypothesis proposes that some natural gas deposits were formed out of hydrocarbons deep in the Earth's mantle. Earlier studies of mantle-derived rocks from many places have shown that hydrocarbons from the mantle region can be found widely around the globe. However, the content of such hydrocarbons is in low concentration.[4] While there may be large deposits of abiotic hydrocarbons, globally significant amounts of abiotic hydrocarbons are deemed unlikely.[5]
^Abiotic Oil a Theory Worth Exploring: Oil may not be formed the way we think it is. U.S. News & World Report, Sept. 14, 2011
^Cite error: The named reference Hook was invoked but never defined (see the help page).
^ abGlasby, Geoffrey P. (2006). "Abiogenic origin of hydrocarbons: a historical overview". Resource Geology. 56 (1): 85–98. Bibcode:2006ReGeo..56...83G. doi:10.1111/j.1751-3928.2006.tb00271.x. S2CID 17968123.
^Sugisuki, R.; Mimura, K. (1994). "Mantle hydrocarbons: abiotic or biotic?". Geochimica et Cosmochimica Acta. 58 (11): 2527–2542. Bibcode:1994GeCoA..58.2527S. doi:10.1016/0016-7037(94)90029-9. PMID 11541663.
^Sherwood Lollar, B.; Westgate, T.D.; Ward, J.D.; Slater, G.F.; Lacrampe-Couloume, G. (2002). "Abiogenic formation of alkanes in the Earth's crust as a minor source for global hydrocarbon reservoirs". Nature. 446 (6880): 522–524. Bibcode:2002Natur.416..522S. doi:10.1038/416522a. PMID 11932741. S2CID 4407158.
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