Abstract
We have detected a family of benzohopanes cyclised at C-20 and two families of diaromatic 8(14)-secohopanoids, in carbonates from the Late Permian Meishan (China) and Bulla (Italy) sections. Furthermore, we have identified a C 33 8(14)-secohopanoid possessing a fluorene moiety. The relative distribution of 8(14)-secohopanoids with a fluorene moiety was similar to that of benzohopanes cyclised at C-20, suggesting that the secohopanoids might be diagenetic products of benzohopanes, or that the benzohopanes and secohopanoids share the same precursor. Furthermore, the series of benzohopanes cyclised at C-16 was not detected from the carbonates of the two sections, which might suggest that the benzohopanes cyclised at C-16 are thermodynamically less stable than those with the aromatic ring attached at C-20.
Original language | English |
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Pages (from-to) | 29-35 |
Number of pages | 7 |
Journal | Geochemical Journal |
Volume | 43 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2009 |
Keywords
- Benzohopanes
- Diagenesis
- Diaromatic 8(14)-secohopanoids
- GC-MS
- Late Permian carbonates
ASJC Scopus subject areas
- Geophysics
- Geochemistry and Petrology