• 责任者：Gong Shuhua (Key Laboratory of Petroleum Resources Research ; Institute of Geology and Geophysics ; Chinese Academy of Sciences ; Lanzhou 730000 ; China) ; Zhou Shixin
• 刊名：Natural Gas Geoscience
• 出版年：2013
• 卷期：24(5)
• 关键词：烃源岩 ; source rocks ; 准噶尔盆地 ; Junggar Basin
• 页码：p.1005-1015
• 图表：9 illus., 3 tables, 27 refs.
• 分类号：1003
• issnNo：ISSN1672-1926
• isbnNo：CN62-1177/TE

     Comparisons Of Geochemical Characteristics Of Carboniferous And Permian Main Analysis and comparison of the biomarkers and compound-specific stable carbon isotope of n-al- kenes were mainly conducted for Carboniferous and Permian source rocks from Junggar Basin,NW China. The organic matter abundance of Carboniferous and Permian source rocks is relatively high and the maturi- ty of them is high in the northwestern and southern edges while low in the eastern region of the basin,and all of them match the requirements of the hydrocarbon generation. The Carboniferous source rocks in the northwestern and eastern regions are characterized by high Pr/Ph ratios and C29 sterane,and low gammac- crane and C28 sterane, which imply the freshwater lacustrine depositional environment of the source rocks dominated by type hansi-font-family: ’times new roman’">Ⅲ organic matter. Permian source rocks were deposited in the brackish water-salt water lacustrine environment and dominated by type I and type II organic matter. They had low Pr/Ph ratios,a certain amount of beta-carotane and relatively high content of gammacerane. Their content of C28 sterane is apparently higher than that of Carboniferous. The Carboniferous source rocks are characterized by type hansi-font-family: ’times new roman’">Ⅲ organic matter and heavy carbon isotope of kerogen. However,the compound-specific stable carbon isotope of their n-alkanes differs apparently because of the influence of their organic sources and maturity. As for Permian source rocks, the good correlation exists in the compound-specific stable carbon isotope of n-al- kanes and kerogens. The compound specific stable carbon isotope of alkanes is relatively high for those from Type hansi-font-family: ’times new roman’">Ⅲ organic matter and relatively low for those from type hansi-font-family: ’times new roman’">Ⅱ and type I organic matter. Addition- ally, the Permian source rock in the south margin has some input of methane bacteria parent matter and has relatively low carbon isotopes of the kerogen,n-alkanes and some hopane compounds.Source Rocks In Junggar Basin