| 依据重力与航磁资料对天津地区深大断裂深部特征的解释 |
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| 引用本文： | 焦新华,吴燕冈,马淑燕,范美宁,肖鹏飞.依据重力与航磁资料对天津地区深大断裂深部特征的解释[J].吉林大学学报(地球科学版),2005(Z1). |
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| 作者姓名： | 焦新华 吴燕冈 马淑燕 范美宁 肖鹏飞 |
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| 作者单位： | 吉林大学地球探测科技学院 吉林大学地球探测科技学院 吉林长春 吉林长春 |
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| 摘 要： | 依据重力与航磁异常,在地壳分层、正演模拟以及多种不同方法的处理结果基础上,重点认识天津断裂、沧东断裂与天津西部断裂等深大断层的深部延展特征,分析其活动规律,从不同侧面认识本区地壳在渤海湾裂谷盆地发育中的地质过程。研究结果认为:天津地区存在超壳断裂的可能性不大;天津断裂带西部新生代盖层下部存在规模较大的产状较陡的隐伏断裂,该断裂的活动性对本地区地壳稳定性影响更大。
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| 关 键 词： | 重力与航磁 隐伏断裂 地壳稳定性 |
The Interpretation on the DeepFeatures of DeepFracture Zone in Tianjin Area Based on Gravity and Aeromagnetic Anomaly |
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| JIAO Xin-hua,WU Yan-gang,MA Shu-yan,FAN Mei-ning,XIAO Peng-fei.The Interpretation on the DeepFeatures of DeepFracture Zone in Tianjin Area Based on Gravity and Aeromagnetic Anomaly[J].Journal of Jilin Unviersity:Earth Science Edition,2005(Z1). |
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| Authors: | JIAO Xin-hua WU Yan-gang MA Shu-yan FAN Mei-ning XIAO Peng-fei |
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| Abstract: | On the basis of varied data processing such as layering of Earth'scrust?forward calculation and so on,A interpretation based on gravity and aeromagnetic anomaly including of extended orientation of some faults is given in this paper.These faults are Tianjin fault?Cangdong fault?the fault on west of Tianjin city and so on.The study and interpretation are consist of the analysis of evolutionary process and geological state of the Tianjijn area in the epoch of Bohai gulf rift-valley basin.The conclusion according to the study is gained: It is less possibility there are deep features exceeding crust extension in Tianjin area;On the west of Tianjin city there is a buried fault below down the Cenozoic group. It's occurrence is steep and extension is long.The mobility of the fault will give more influence on the stability of the crust in Tianjin area. |
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| Keywords: | gravity and aeromagnetic buried fault stability of crust |
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