Physics
Scientific paper
May 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990gecoa..54.1315m&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 54, Issue 5, pp.1315-1323
Physics
3
Scientific paper
A kerogen-specific, steady-state catalytic process is proposed for the origin of light hydrocarbons in petroleum. The postulated parent-daughter scheme predicts a unique invariance in a ratio of isoheptanes and dimethylcyclopentanes. In theory this ratio should remain constant over the entire lifetime of a source-rock generating petroleum. To test this hypothesis, two very large petroleum deposits were extensively sampled giving two sample sets believed to represent large time-segments of petroleum generation. The sets display a remarkable invariance in the predicted ratio. Moreover, the ratios for the two sets are distinct and constitute the outer limits for the ratio in a large database of over 2000 samples of petroleums. Thus, the ratio of isoheptanes and dimethylcyclopentanes remains constant over the course of petroleum generation.
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