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Thermal alteration experiments on organic matter from recent marine sediments in relation to petroleum genesisThree fractions of organic matter: lipid (benzene:methanol-extractable), humic acid (alkali-extractable) and kerogen (residue) were extracted from a young marine sediment (Tanner Basin, offshore southern California) and heated for different times (5-116 hr) and temperatures (150-410 C). The volatile (gases) and liquid products, as well as residual material, were then analyzed. On a weight basis, the lipid fraction produced 58% of the total identified n-alkanes, the kerogen fraction 41%, and the humic acid less than 1%. The volatiles produced by heating the lipid and humic acid fractions were largely CO2 and water, whereas those produced from heated kerogen also included methane, hydrogen gas and small amounts of C2-C4 hydrocarbons. A mechanism for hydrocarbon production due to the thermal alteration of organic constituents of marine sediment is discussed.
Document ID
19770053402
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Ishiwatari, R.
(California Univ. Los Angeles, CA, United States)
Ishiwatari, M.
(California Univ. Los Angeles, CA, United States)
Rohrback, B. G.
(California Univ. Los Angeles, CA, United States)
Kaplan, I. R.
(California, University Los Angeles, Calif., United States)
Date Acquired
August 9, 2013
Publication Date
June 1, 1977
Publication Information
Publication: Geochimica et Cosmochimica Acta
Volume: 41
Subject Category
Chemistry And Materials (General)
Accession Number
77A36254
Funding Number(s)
CONTRACT_GRANT: NGR-05-007-221
CONTRACT_GRANT: E(04-3)-34
Distribution Limits
Public
Copyright
Other

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