| 从航空重力看郯庐断裂系(渤海)及其围区构造几何学特征 |
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| 关键词:airborne gravimetry tectonic geometry Tanlu faults Bohai Sea and adjacent areas |
| 基金项目:国家重大科技攻关专项(编号: GZH200200301) |
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| Tectonic Geometry of Tan-lu Faults in the Bohai Sea and Its Adjacent Areas Viewed from Airborne Gravity |
| Based on the airborne gravimetric data obtained from the first test in China, the authors studied the tectonic geometry of the Tanlu faults in the onshore-offshore transitional area of the western and southern part of the Bohai Sea and its adjacent areas. As a result, some conclusions have been reached: (1)the two obvious NNE-trending gravity anomaly gradient belts in the southern and western parts of the Bohai Sea are the dividing lines of different regional gravity fields, which respectively correspond to the east Tanlu fault(dominant fault)and the west Tanlu fault; (2)there are mainly the NE-NNE striking gravity anomaly gradient belts on the east side of the Tanlu fault, and the intercrossed NW, NE-NNE and near EW-striking gravity anomaly gradient belts on the west side of the Tanlu fault, which show different structural frameworks on the east side and the west side; (3)different assemblages of gravity anomaly blocks and gradient belts reflect three types of structural styles, namely, stretching, compression and torsion; (4)different gravity anomaly areas, subareas and blocks reflect different sedimentary-structural characteristics, which correspond to different structural units. |
| LI Wen-yong,ZHOU Jian-xin,XIONG Sheng-qing,GUO Zhi-hong,XU Jian-chun,ZHOU Xi-hua,AN Zhan-feng,LI Bing,LUO Feng.2010.Tectonic Geometry of Tan-lu Faults in the Bohai Sea and Its Adjacent Areas Viewed from Airborne Gravity[J].Acta Geoscientica Sinica,31(4):549-556. |
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