| 地震火山地层学及其在我国火山岩盆地中的应用 |
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| 引用本文： | 王璞珺,张功成,蒙启安,鲁宝亮,朱德丰,孙晓猛.地震火山地层学及其在我国火山岩盆地中的应用[J].地球物理学报,2011,54(2):597-610. |
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| 作者姓名： | 王璞珺 张功成 蒙启安 鲁宝亮 朱德丰 孙晓猛 |
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| 作者单位： | 1. 吉林大学地球科学学院,长春 130061;
2. 中海油研究总院,北京 100027;
3. 大庆油田勘探开发研究院,大庆 163712 |
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| 基金项目： | 国家科技重大专项，国家"973"项目 |
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| 摘 要： | 火山地层,物源来自于地下,搬运和分散方式有岩浆流、碎屑流、空落堆积及它们的再搬运,是不同于所有沉积地层的"异化地层".与层序地层学研究沉积地层类似,火山地层学着重研究火山岩系的层序界面和内部充填样式,通过地震层序分析刻画成因地层单元和地层对比关系.应用地震火山地层学在南海北部陆缘带识别出向海倾斜反射(SDR)、向陆流、...
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| 关 键 词： | 异化地层 地震火山地层学 南海盆地 松辽盆地 向海倾斜反射(SDR) |
| 收稿时间： | 2010-07-20 |
Applications of seismic volcanostratigraphy to the volcanic rifted basins of China |
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| WANG Pu-Jun,ZHANG Gong-Cheng,MENG Qi-An,LU Bao-Liang,ZHU De-Feng,SUN Xiao-Meng.Applications of seismic volcanostratigraphy to the volcanic rifted basins of China[J].Chinese Journal of Geophysics,2011,54(2):597-610. |
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| Authors: | WANG Pu-Jun ZHANG Gong-Cheng MENG Qi-An LU Bao-Liang ZHU De-Feng SUN Xiao-Meng |
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| Institution: | 1. College of Earth Sciences, Jilin University, Changchun 130061, China;
2. Beijing Research Center of CNOOC,Beijing 100027,China;
3. Exploration and Development Research Institute of Daqing Oilfield Company Ltd., Daqing 163712, China |
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| Abstract: | Materials comprising volcanogenic successions are derived from erupted components and transported by lava/pyroclastic flows and fallout as well as reworking processes. Their buildups are substaintial allostratigraphy and quite different from all kind of sedimentary sequences. The same with sequence stratigraphy for sedimentary rocks, volcanostratigraphy focuses on filling patterns confined by sequence boundaries, and depicts geological features and correlation of the successions in a volcanic basin. Some volcanic seismic facies units, including inner seaward dipping reflectors (SDR), landward flows, outer high and feeder dikes, were recognized in northern margin of the South China Sea based on the concepts of seismic volcanostratigraphy, indicating volcanic rifted margin. For volcanogenic successions of the Songliao Basin, it was realized that there are three types of sequence boundaries, in descending order of formation, member, and volcanic cycle, and that there are five patterns of basin filling i.e. aggradation, progradation, draping, mounding and cutting. Inland basins and continental margins are two branches concerning the applications of seismic volcanostratigraphy. By comparison, intrafacies components/components associations (4th tier) and facies associations (3rd tier) were three-dimensionally described in inland basins. On the other hand, seismic facies (2nd tier) like SRD and landward flows were globally developed in the marginal basins (cf. first tier heterogeneity is on the scale of graben). Optimizing combination of the two branches will make seismic volcanostratigraphy more fruitful. |
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| Keywords: | Allostratigraphy Seismic volcanostratigraphy South China Sea Basin Songliao Basin Seaward dipping reflectors (SDR) |
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