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《Acta Seismologica Sinica》 2001-04
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GRAVITY FIELD SEPARATION, DENSITY INVERSION AND CRUSTAL TECTONICS IN KANG-DIAN REGION

Jiang Fuzhen Fang Jian (Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077, China)  
Kangdan region is located on the southern part of the famous North South active tectonic belts, which is a part of China Mongolia central axis strong earthquake belt and the huge crustal thickness undulate belt. Many geologists interest in it due to its earthquake activity and plenty of ore deposited. 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 analyses the density data, the results show that there is difference both in tectonic feature and geophysical feature between Kangdian diamond block and its west and east parts.
【Fund】: 国家自然科学基金 (4 98740 0 5 );; 中科院重点项目(KZCX2 -1 0 6、 KZ95 2 -J1 -41 7)资助
【CateGory Index】: P223.7
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