Ein geochemisches Profil durch den Lias alpha (zur Frage der Entstehung des Erdöls)
Review articleOpen access
1960/02/01 Full-length article DOI: 10.1016/0016-7037(60)90091-0
Journal: Geochimica et Cosmochimica Acta
AbstractA systematic study of trace elements and isotopes in lithological profiles and connected oils might lead to the determination of source rocks. This paper is a first attempt in this line; results will be conclusive only after a study of the whole stratigraphical sequence has been completed.There is practically no difference between the ratio 12C: 18C in bituminous shales and oils from the Lias alpha. It seems that during bituminization and oil-forming the ratio is changed as little as in the forming of coals. No connexion was found between degree of salinity of sedimentational environment, and 12C: 13C ratio of oils present in such sediments. Of trace metals, oils contain notably less Cr than the shales of their vicinity; the same relationship is observed between tars (“oils”) and their parent oil shales.
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