| 永梅坳陷二叠纪煤系的热演化特征与热历史分析 |
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| 引用本文： | 房洪峰,姚素平,焦堃,胡文瑄,曹剑,高玉巧.永梅坳陷二叠纪煤系的热演化特征与热历史分析[J].高校地质学报,2010,16(2):255-264. |
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| 作者姓名： | 房洪峰 姚素平 焦堃 胡文瑄 曹剑 高玉巧 |
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| 作者单位： | 南京大学 地球科学与工程学院，南京 210093 |
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| 基金项目： | 中国石化"中国东南部海相盆地差异演化及油气远景" |
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| 摘 要： | 中国东南部海相和近海相地层普遍遭受多次后期复杂岩浆作用的改造，因而，尽管不乏富有机质地层，但热
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| 关 键 词： | 中国东南部 永梅坳陷 二叠纪 煤系 烃源岩 热演化 岩浆作用 |
| 收稿时间： | 2010-03-31 |
| 修稿时间： | 2010-04-27 |
Thermal Evolution and History of the Permian Coal Measures in Yongmei Depression |
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| FANG Hong-feng,YAO Su-ping,JIAO Kun,HU Wen-xuan,CAO Jian,GAO Yu-qiao.Thermal Evolution and History of the Permian Coal Measures in Yongmei Depression[J].Geological Journal of China Universities,2010,16(2):255-264. |
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| Authors: | FANG Hong-feng YAO Su-ping JIAO Kun HU Wen-xuan CAO Jian GAO Yu-qiao |
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| Institution: | School of Earth Sciences and Engineering, Nanjing University, Nanjing 210093, China |
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| Abstract: | The marine sedimentary sequence in southeastern China was widely altered by the
complicated multi-stage magmatic activities. In spite of high organic abundance in some strata, the
characteristics and controlling factors of thermal evolution and hydrocarbon generation are still
not clear, which restricts further understanding in basic petroleum geologic problems. Taking
Permian coal measures in Yongmei depression as an example, based on the determination of vitrinite
reflectance and volatile index and combined with the study of geological background and thermal
modelling, the thermal maturation of hydrocarbon source rocks and their distribution was analyzed,
and the evolution history of hydrocarbon generation was constructed. The results show that,
generally speaking, the coal hydrocarbon source rocks have attained the phase of post-mature-dry
gas. Horizontally, thermal maturation is increasing from west to east; and vertically, thermal
evolution is not related to depth of burial. According to the history of thermal evolution and
hydrocarbon generation, the Yanshanian stage is an important period for drastic change in thermal
history of the Yongmei depression. Thermal evolution of the Permian source rocks was affected and
metamorphosed by several thermal sources, among which the magmatic activities resulted in
anomalously high metamorphism of marine source rocks in this region. |
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| Keywords: | Southeast China Yongmei depression Permian coal measures hydrocarbon source rocks thermal evolution magmatic activities |
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