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| 1 | Applications of molecular fossils in lacustrine stratigraphy显示文摘Biomarkers,or the so-called molecular fossils,are used tentatively in the Eogene lacustrine stratigraphy study in the Jiyang Sub-basin.Notwithstanding the fact that unidentified microfossils or amorphism and acritarchae are widely distributed in lacustrine source rocks,molecular fossils are useful to identify the sources.It is helpful to reconstruct the palaeo-enviroment,palaeo-ecosystem and compartmentalize the stratigraphic sequence by using molecular fossils with which the existence and types of microbes including bacteria,archaea and certain algae can be identified. | WANG Guangli LI Shu WANG Tieguan ZHANG Linye | 2010 | Chinese Journal Of Geochemistry2010，29，1： | 4 |
| 2 | Biomarker geochemistry of marine organic matter in the Hushan and Chaohu areas,Lower Yangtze region显示文摘Marine strata are widely exposed in the Hushan and Chaohu areas, Lower Yangtze region. As biomarker geochemistry of the strata has not been well documented, this paper deals with the biomarker composition of representative samples collected from the Silurian, Carboniferous and Triassic systems and their geological implications, thus providing clues to marine organic matter. On the basis of experimental results, it is shown that abundant biomarkers (e.g. n-alkanes, isoprenoids, terpanes and steranes) were detected. As organic matter in the strata is highly to over mature in general based on petrologic microobservation, some biomarkers (mainly n-alkanes) except terpanes and steranes cannot reflect the source, depositional environment and maturity of organic matter. Thus, primarily based on analyses of the terpanes and steranes, it is suggested that organic matter in the Silurian and Carboniferous strata is derived mainly from lower organisms, while higher plants are predominant in the Triassic organic matter. This further indicates that the depositional environment may have transformed from the marine to continental facies in the Late Triassic. These results provide new evidence for the study of regional depositional evolution, and have enriched the study of biological composition of organic matter. In addition, the biomarker geochemistry of organic matter at high to over maturation stage is addressed. | Chang, Chao Wang, Shaohua Zhu, Chen Ma, Weimeng Hu, Wenxuan Cao, Jian | 2011 | Chinese Journal Of Geochemistry2011，30，2： | 2 |
| 3 | Geochemical characteristics of aromatic hydrocarbons in crude oils from the Linnan Subsag, Shandong Province, China显示文摘Abundant aromatic fractions were detected in oils from the Linnan subsag, including aphthalenes, phenanthrenes, triaromatic steroids, biphenyl, fluorenes, dibenzothiophenes, dibenzofuranes, as well as some typical higher plant-sourced compounds, such as pyrene, benzopyrene, fluoranthene, chryaene, benzofluoranthrene, perylene and cadalene. Occurrences of biomarkers indicate that oils from the Linnan subsag are typical terrestrially genetic oils. Developed in the depositional environment is a strong reduction condition typical of brackish-saline lake. Thermal evolution has entered into the mature-high mature stage. | CHANG Xiangchun HAN Zuozhen SHANG Xiaofei YAN Chengpeng | 2011 | Chinese Journal Of Geochemistry2011，30，1： | 1 |
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