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| Content Provider | Springer Nature Link |
|---|---|
| Author | Zhang, Linye Song, Yitao Wang, Guangli Huang, Difan |
| Copyright Year | 2006 |
| Abstract | The compositions of organic matter in four immature source rocks from Tertiary strata of Jiyang super-depression, the most typical continental rift subsidence basin in East China, have been studied by different extracting methods with CHCl$_{3}$, MAC and CS$_{2}$/NMP, respectively. The results suggest that there are great differences among the chemical compositions of organic matter in the source rocks derived from different depositional environments. About 79% of all the organic matter exists by non-covalent bond in the Es$_{4}$ source rocks which were deposited under the saline lacustrine, indicating that its organic matter is not the real kerogen, but mainly composed of soluble organic matter which is easy to generate hydrocarbon at lower temperature. This is why the immature oils were derived from Es$_{4}$ source rocks in Dongying depression. In contrast, around 60% of organic matter exists by covalent bond in Es$_{3}$ source rocks which were deposited under the deep brackish-fresh lacustrine, showing that Es$_{3}$ source rocks are mainly composed of kerogen producing mature hydrocarbon at higher temperature. The thermal simulation experiments, upon the remaining solid source rocks which were sequentially extracted by the three solvents, have been carried out. The chloroform extracts from the simulation product have been compared with the other three solvent extracts gained at room temperature. It is obvious that remarkable odd/even predominance (OEP) is mainly the characteristic of soluble organic matter; phytane mostly exists in the soluble organic matter by means of non-covalent bonds and characteristics of soluble organic matter are similar to these in immature oils produced in Jiyang super-depression. |
| Starting Page | 573 |
| Ending Page | 584 |
| Page Count | 12 |
| File Format | |
| ISSN | 10016538 |
| Journal | Chinese Science Bulletin |
| Volume Number | 51 |
| Issue Number | 5 |
| e-ISSN | 18619541 |
| Language | English |
| Publisher | Science in China Press |
| Publisher Date | 2006-01-01 |
| Publisher Place | Beijing |
| Access Restriction | Subscribed |
| Subject Keyword | CS$_{2}$/NMP mixed solvents non-covalent bond immature source rock soluble organic matters generation mechanism immature oil Chemistry/Food Science Geosciences Life Sciences Physics Engineering Science |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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