| Gravity field separation, density inversion and crustal tectonics in Kang-Dian region |
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| 作者姓名： | 蒋福珍 方剑 |
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| 作者单位： | JIANG Fu-zhen FANG Jian Institute of Geodesy and Geophysics，Chinese Academy of Sciences，Wuhan 430077，China |
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| 基金项目： | State Natural Science Foundation of China (No.49874005)，Chinese Academy of Sciences (No. KZCX2-106). |
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| 摘 要： | IntroductionTethys-Himalya tectonic belt extends from west to east across Europe, Asia and Africa, and stops at the longitude of 104(E in China. The famous North-south active tectonic belt located in China is a part of China-Mongolia central-axis strong earthquake belt and the huge crustal thickness undulation belt. The tectonic belt is a strong extrusion, tension and shear region. It is synthesized by topography gradient belt, faults, Cenozoic basin and strong earthquake belt on north-so…
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| 收稿时间： | 15 August 2000 |
| 修稿时间： | 16 March 2001 |
Gravity field separation, density inversion and crustal tectonics in Kang-Dian region |
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| JIANG Fu-zhen,FANG Jian.Gravity field separation, density inversion and crustal tectonics in Kang-Dian region[J].Acta Seismologica Sinica(English Edition),2001,14(4):417-424. |
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| Authors: | JIANG Fu-zhen FANG Jian |
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| Institution: | Institute of Geodesy and Geophysics, Chinese Academy of Sciences, |
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| Abstract: | Kang-Dian region is located on the southern part of the famous North-South active tectonic belts, which is a part of China-Mongolia central axes strong earthquake belt and the huge crustal thickness undulation belt. Many geologists are interested in it due to its seismicity and abundant mineral resource. We inverted mean crustal density and density anomalies on the different layer in the depth range of 10~100 km, using the gravity field that is treated by separation and adjustment. Combining other geophysical data to analyze the density data, the results show that there is difference both in tectonic feature and geophysical feature between Kang-Dian lozenge block and its western and eastern parts. |
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| Keywords: | gravity anomaly density distribution potential-field inversion |
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