- 责任者：Zhang Mingfeng (Key Laboratory of Petroleum Resources Research ; Institute of Geology and Geophysics ; Chinese Academy of Sciences ; Lanzhou 730000 ; China) ; Zou Hongliang
- 刊名：Natural Gas Geoscience
- 出版年：2013
- 卷期：24(5)
- 关键词：烃源岩 ; source rocks ; 生物标志化合物 ; biomarkers ; 柴达木盆地 ; Qaidam Basin
- 页码：p.975-981
- 图表：6 illus., 1 table, 20 refs.
- 分类号：1003
- issnNo：ISSN1672-1926
- isbnNo：CN62-1177/TE
Source rocks from a Tertiary inland lake in the Qaidam Basin （west,China） were analysed for ar- omatics using capillary gas chromatography-mass spectrometry （GC-MS）. The triaromatic members of the new series, phenylnaphthalenes （PhNs） and terphenyls （TrPs）, are found in different types of source rocks. The isomeric composition of phenylnaphthalenes and terhenyls was found to depend on thermal ma- turity. In the samples with lower maturity abundances of 1-PhN and o-TrP are higher. Increase in sample maturity is indicated by an increase in the relative abundance of 2-PhN as well as m-TrP and p-TrP. Three thermal maturity parameters of the organic matter based on the relative abundances of the PhN and TrP i- somers are proposed： PhNR=2-PhN/1PhN,TrPl=p-TrP/o-TrP,and TrP2= （m-TrP＋p-TrP）/o-TrP. In general their values are positively correlated with vitrinite reflectance fRo） in a range of 0. 47%-1. 32%, While correlation of the conventional biomarker maturity parameters （C29 ααα sterane -20S/（20S＋20R）, C31αβ hopane 22S/（22S＋22R）,MPI1 ratio） are less apparent with vitrinite reflectance fro） in a range of 0. 92%-1. 32%. So the new parameters perhaps are effective reflecting degree of thermal evolution of or- ganic matter in the mature-highly mature stage.