| 梅河盆地梅河组含煤-油页岩岩系成矿特征分析 |
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| 引用本文： | 张坤,柳蓉,刘招君,张超.梅河盆地梅河组含煤-油页岩岩系成矿特征分析[J].世界地质,2017,36(3):903-912. |
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| 作者姓名： | 张坤 柳蓉 刘招君 张超 |
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| 作者单位： | 1. 吉林大学地球科学学院, 长春 130061;2. 吉林省油页岩及共生能源矿产重点实验室, 长春 130061;3. 中国石油大庆油田采油三厂, 黑龙江大庆 163000 |
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| 基金项目： | 国家自然科学青年基金（41302097）与吉林省科技发展计划（20140101165JC）联合资助. |
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| 摘 要： | 综合利用野外露头及岩芯观察,岩石矿物组合、有机地球化学和工业分析等资料,对梅河盆地梅河组上含煤段煤与油页岩成矿特征进行深入分析。研究表明,油页岩与煤相比,具有较低的挥发分及有机碳含量,较高的灰分。煤层顶板油页岩与煤层底板油页岩相比,具有较高的挥发分及有机碳含量,较低的灰分。油页岩有机质类型为Ⅰ-Ⅱ_2型,其中,煤层底板油页岩主要为Ⅰ型,煤层顶板油页岩主要为Ⅱ_1-Ⅱ_2型;煤的有机质类型主要为Ⅱ_2-Ⅲ型。梅河组上含煤段发育于盆地萎缩阶段,含煤、油页岩岩系主要发育于扇三角洲前缘-浅湖-沼泽沉积环境,煤与油页岩的成矿序列形成于与沼泽有密切成因联系的浅湖环境,主控因素为浅湖时期的湖平面或沼泽时期的潜水面。
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| 关 键 词： | 成矿特征 沉积环境 梅河组 梅河盆地 |
| 收稿时间： | 2016-10-27 |
| 修稿时间： | 2017-05-05 |
Metallogenic characteristics of coal-and oil shale-bearing layers in Meihe Formation of Meihe Basin |
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| ZHANG Kun,LIU Rong,LIU Zhao-jun,ZHANG Chao.Metallogenic characteristics of coal-and oil shale-bearing layers in Meihe Formation of Meihe Basin[J].World Geology,2017,36(3):903-912. |
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| Authors: | ZHANG Kun LIU Rong LIU Zhao-jun ZHANG Chao |
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| Institution: | 1. College of Earth Sciences, Jilin University, Changchun 130061, China;2. Key Laboratory Oil Shale and Coexisting Minerals, Jilin University, Changchun 130061, China;3. Oil Extraction Plant 3, Daqing Oilfield of CNPC, Daqing 163000, Heilongjiang, China |
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| Abstract: | Utilizing comprehensive ways of outcrops,core and thin section observation,rock mineral composition, organic geochemistry and industrial analysis,the metallogenic characteristics of the coal and oil shale in the upper coal-bearing strata of the Meihe Formation in the Meihe Basin are deeply analyzed. Research shows that the oil shale has lower volatile and organic carbon content and higher ash content than coal. The oil shale overlying the coal layer has higher organic carbon and volatile content and less ash content than oil shale underlying the coal layer. Generally the organic type of oil shale is type Ⅰ-Ⅱ2,of which,for oil shale underlying coal layer,it is typeⅠ,and for oil shale overlying coal layer,it is type Ⅱ1-Ⅱ2. The organic matter type of coal is type Ⅱ2-Ⅲ. As the upper coal bearing strata of the Meihe Formation was developed in the shrinking stage of Meihe Basin,the coal-and oil shale-bearing layers was mainly developed in a fan-delta front-shallow lacustrine-swamp sedimentary environment. Metallogenic sequence of coal and oil shale was mainly formed in the shallow lacustrine environment,which is closely related to the swamp. The main controlling factors on the origin of oil shale and coal depend on the water level in shallow lacustrine stage and ground water table of the swamp stage. |
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| Keywords: | metallogentic characteristics sedimentary environment Meihe Formation Meihe Basin |
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