| 拉分盆地三维演化初探——以新疆富蕴断裂拉分盆地为例 |
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| 引用本文： | 张之武,付碧宏,Yasuo Awat,周尚国.拉分盆地三维演化初探——以新疆富蕴断裂拉分盆地为例[J].地球学报,2011,32(2):251-256. |
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| 作者姓名： | 张之武 付碧宏 Yasuo Awat 周尚国 |
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| 作者单位： | 中国冶金地质总局矿产资源研究院;中国科学院地质与地球物理研究所;日本经济产业省产业技术综合研究所活断层研究中心;中国冶金地质总局矿产资源研究院 |
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| 基金项目： | 中国冶金地质总局风险勘查项目“西天山成矿规律研究”(编号: FX【2009】-02) |
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| 摘 要： | 拉分盆地指沿着走滑断裂带弯曲部位,由于拉张而产生的地形上的低洼处,多形成于走滑断裂带次级断裂的间列部位.拉分盆地研究对于探讨走滑断裂扩展方式及分段性意义重大;分布于大型走滑断裂带上的拉分盆地,对于断裂带上地震临震预测具有一定的指示作用;此外,该类盆地往往与油气资源、成矿热液的运移、聚集、产出关系密切.本文在综述前人对拉...
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| 关 键 词： | 拉分盆地 后差分测量技术 滑脱面深度 三维演化特征 |
Three-Dimensional Evolution Features of the Pull-Apart Basin: A Case Study of Fuyun Fault |
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| ZHANG Zhi-wu,FU Bi-hong,Yasuo Awata and ZHOU Shang-guo.Three-Dimensional Evolution Features of the Pull-Apart Basin: A Case Study of Fuyun Fault[J].Acta Geoscientia Sinica,2011,32(2):251-256. |
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| Authors: | ZHANG Zhi-wu FU Bi-hong Yasuo Awata and ZHOU Shang-guo |
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| Institution: | Institute of Mineral Resources Research, China Metallurgical Geology Bureau;Institute of Geology and Geophysics, Chinese Academy of Sciences;Geological Survey of Japan, National Institute of Advanced Industrial Technology;Institute of Mineral Resources Research, China Metallurgical Geology Bureau |
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| Abstract: | The pull-apart basin formed around the steps of the strike-slip fault refers to a low terrain area due to tensile force from the fault.The study of pull-apart basins especially the ones occurring along the large-scale strike-slip faults not only plays an important role in the research on strike-slip fault’s expansion and segmentation but also has some significance in the prediction of impending earthquake along the fault.Besides,these basins usually provide space for the migration,accumulation and production of oil,gas and mineral resources.The authors summarized the geometric and geomorphologic features of the evolution of the pull-apart basin based on previous research results,and chose a small pull-apart basin along the Fuyun fault to study its geometric and geomorphologic characteristics.Based on the survey using the differential global positioning system(DGPS) measurement instruments——SOUTH 9600 Polaris and data processing using SOUTH GPS and SOUTH CASS7.0 software,the authors constructed the contour pattern of the basin.Then,according to the model which explains the offsetting and sinking change of the pull-apart basin before and after the earthquake,the authors calculated the depth of its detachment,which turns out to be about 40 m below the surface.On such a basis,the relationship between the pull-apart’s horizon offset and vertical sinking is concluded,and the three-dimensional evolution features of the pull-apart basin are deduced. |
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| Keywords: | pull-apart basin differential global positioning system detachment depth three-dimensional evolution features |
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