| 藏北羌塘盆地胜利河油页岩干酪根特征及碳同位素指示意义 |
| |
| 引用本文： | 付修根,王剑,汪正江,何江林.藏北羌塘盆地胜利河油页岩干酪根特征及碳同位素指示意义[J].地球学报,2009,30(5):643-650. |
| |
| 作者姓名： | 付修根 王剑 汪正江 何江林 |
| |
| 作者单位： | 成都地质矿产研究所, 四川成都 610081;成都地质矿产研究所, 四川成都 610081;成都地质矿产研究所, 四川成都 610081;成都地质矿产研究所, 四川成都 610081 |
| |
| 基金项目： | 国家自然科学基金项目(编号: 40702020)、四川省青年科技基金（09ZQ026-006）和国家油气专项(编号: XQ2004-06)资助 |
| |
| 摘 要： | 胜利河油页岩位于北羌塘盆地南部, 走向长超过34 km, 宽9 km。笔者对该油页岩各岩系干酪根进行了分离、镜鉴、元素分析和碳同位素分析, 结果表明, 该油页岩干酪根为Ⅱ型干酪根, 油页岩中干酪根含量较高, 介于15.79%~20.37%, 具有富氢少氧的特征, 其H/C和O/C比率分别为1.11~1.19和0.08~0.25, 为胜利河地区非常好的烃源岩。油页岩层干酪根13C相对富集, 具有相对较高的δ13CPDB值(-20.79‰~ -21.78‰), 与胜利河地区油页岩母源为较单一的藻类有关。藻类的大量繁殖造成了该类生物死亡埋藏速率远大于氧化速率, 在还原环境下大部分藻类还未被氧化就被埋藏, 从而保留了原始藻类略富13C的特征。胜利河油页岩的空间展布以及规模明显受古泻湖环境的控制。
|
| 关 键 词： | 羌塘盆地 胜利河油页岩 干酪根 碳同位素 |
Characteristics of Kerogens and Their Carbon Isotope Implications for the Shengli River Oil Shale in Qiangtang Basin, Northern Tibet |
| |
| FU Xiu-gen,WANG Jian,WANG Zheng-jiang and HE Jiang-lin.Characteristics of Kerogens and Their Carbon Isotope Implications for the Shengli River Oil Shale in Qiangtang Basin, Northern Tibet[J].Acta Geoscientia Sinica,2009,30(5):643-650. |
| |
| Authors: | FU Xiu-gen WANG Jian WANG Zheng-jiang and HE Jiang-lin |
| |
| Institution: | Chengdu Institute of Geology and Mineral Resources, Chengdu, Sichuan 610081;Chengdu Institute of Geology and Mineral Resources, Chengdu, Sichuan 610081;Chengdu Institute of Geology and Mineral Resources, Chengdu, Sichuan 610081;Chengdu Institute of Geology and Mineral Resources, Chengdu, Sichuan 610081 |
| |
| Abstract: | The Shengli River oil shale in the southern part of northern Qiangtang depression within northern Tibet plateau has a EW-extending length of more than 34 km and a width of 9 m in the north-south direction.Such oil shale is of great importance in the assessment of oil and gas resources in Qiangtang basin.The oil shale has high kerogen contents and H/C ratios(1.11～1.19)and low O/C values(0.08～0.25),implying a fairly ideal source rock.The oil shale and interbedded marl from the Shengli River area in Qiangtang basin have a remarkably heavy Ckerogen isotopic composition.ranging in δ~(13)C values of the bulk organic matter from-20.79‰ to-2 1.78‰.The enrichment of ~(13)C in the Shengli River oil shale can be attributed to a combination of the high growth rate and the sedimentary environment,with the paleo-lagoon environment obviously controlling the spatial distribution and size of oil shale. |
| |
| Keywords: | Qiangtang basin Shengli River oil shale kerogen carbon isotope |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《地球学报》浏览原始摘要信息 |
| 点击此处可从《地球学报》下载免费的PDF全文 |
|
