| 青海-甘肃民和盆地油页岩成因类型及特征 |
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| 引用本文： | 郭巍,刘招君,宋玉勤,李成博,苏飞.青海-甘肃民和盆地油页岩成因类型及特征[J].地质通报,2009,28(6):778-786. |
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| 作者姓名： | 郭巍 刘招君 宋玉勤 李成博 苏飞 |
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| 作者单位： | 吉林大学地球科学学院 |
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| 摘 要： | 利用岩心、钻井和分析测试资料，对民和盆地油页岩的沉积环境、层序地层、赋存、工业品质和地球化学特征进行了研究，将民和盆地油页岩划分为3种成因类型：油一层为深湖—半深湖低含油率腐泥型油页岩，油三层为浅湖相低含油率腐殖—腐泥型油页岩，油四层为湖沼相中含油率腐泥—腐殖型油页岩。研究成果表明：形成于深湖—半深湖相的油一层分布范围广，厚度较大，油页岩含油率不高，属高灰分低含油率的油页岩；形成于湖沼相的油四层厚度较小，平面上分布不稳定，含油率较高，属中灰分中含油率的油页岩。
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| 关 键 词： | 油页岩 成因类型 含油率 干酪根类型 民和盆地 |
Genetic type and features of oil shale in the Minhe basin, Qinghai-Gansu Province, China |
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| GUO Wei,LIU Zhao-jun,SONG Yu-qin,LI Cheng-bo,SUI Fei.Genetic type and features of oil shale in the Minhe basin, Qinghai-Gansu Province, China[J].Geologcal Bulletin OF China,2009,28(6):778-786. |
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| Authors: | GUO Wei LIU Zhao-jun SONG Yu-qin LI Cheng-bo SUI Fei |
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| Institution: | College of Earth Science, Jilin University |
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| Abstract: | Based on the data of drilling cores and analysis test, it is discussed about the sedimentary environment, the characteristics of sequence stratigraphy, occurrence, industrial qualities and geochemistry of oil shale in Minhe basin. The oil shale was classified into three genetic types, which include the sapropelic type oil shale of deep-semis lacustrine facies in the first oil shale bed, the humosapropelic type of shallow lacustrine facies in the third oil shale bed, and the sapropelic-humic type of lacustrine bog in the fourth oil shale bed. The researches indicate that the first oil shale bed developed in deep-semis lacustrine distributes widely with large thickness. It is belong to the oil shale of high ash and low oil yield. The fourth oil shale bed developed in lacustrine bog distributes unsteadily with small thickness. It is belong to the oil shale of middle ash and oil yield. |
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