| 鄂尔多斯北部直罗组中烃类包裹体地球化学特征及来源分析 |
| |
| 引用本文： | 李宏涛,蔡春芳,罗晓容,李开开.鄂尔多斯北部直罗组中烃类包裹体地球化学特征及来源分析[J].沉积学报,2007,25(3):467-473. |
| |
| 作者姓名： | 李宏涛 蔡春芳 罗晓容 李开开 |
| |
| 作者单位： | 中国科学院矿产资源研究重点实验室 北京 100029 |
| |
| 基金项目： | 国家重点基础研究发展计划(973计划) |
| |
| 摘 要： | 对鄂尔多斯盆地东胜地区中侏罗统直罗组砂岩中烃类包裹体进行镜下观察、描述，利用压碎抽提法对烃类包裹体进行色谱—质谱分析，并与白垩系油苗、三叠系油砂及源岩抽提物进行对比，目的是探讨其来源。包裹体油生物标志物成熟度参数，C29ααα甾烷20S/(S+R)、C32αβ藿烷22S/(S+R)比值基本达到平衡值，利用甲基菲指数计算的镜质体反射率参数介于0.64%～0.82％之间，显示包裹体中石油烃已接近成熟—成熟热演化阶段；物质来源及沉积环境参数，ααα20R甾烷百分含量C27>C28
|
| 关 键 词： | 烃类包裹体 色谱—质谱 生物标志物 源岩 鄂尔多斯盆地 |
| 文章编号： | 1000-0550（2007）03-0467-07 |
| 收稿时间： | 2006-07-24 |
| 修稿时间： | 2006-07-242006-09-22 |
Geochemical Characteristics and Source of Hydrocarbon Inclusions in Zhiluo Formation Sandstone in Dongsheng Area, Northern Ordos Basin |
| |
| LI Hong-tao,CAI Chun-fang,LUO Xiao-rong,Li Kai-kai.Geochemical Characteristics and Source of Hydrocarbon Inclusions in Zhiluo Formation Sandstone in Dongsheng Area, Northern Ordos Basin[J].Acta Sedimentologica Sinica,2007,25(3):467-473. |
| |
| Authors: | LI Hong-tao CAI Chun-fang LUO Xiao-rong Li Kai-kai |
| |
| Institution: | Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029 |
| |
| Abstract: | First of all, the researchers observed and described hydrocarbon inclusions in Middle Jurassic Zhiluo Formation sandstones in Dongsheng area, northern Ordos basin under microscope and UV fluorescence, and then, carefully selected the sandstone samples containing hydrocarbon inclusions with high abundance. Subsequently, these samples were washed, crushed, extracted for hydrocarbons and analyzed for GC and GC MS and compared with oils extracted from Cretaceous sandstone, Triassic sandstone and source rock, respectively. The results show that C29 ααα sterane 20S/(20S+20R) and C32 αβ hopane 22S/(22S+22R) ratios of the inclusion oils are close to respective equilibrium values. Vitrinite reflectance values were calculated based on methylphenanthrene index(MPI) and have values from 0.64％ to 0.82％, suggesting that the inclusion oils are near mature to mature. Among C27, C28 and C29 ααα20R steranes, C27>C28
|
| |
| Keywords: | hydrocarbon inclusions GC-MS biomarker source rock Ordos basin |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《沉积学报》浏览原始摘要信息 |
| 点击此处可从《沉积学报》下载免费的PDF全文 |
