| 日照—连云港地区主要断裂重磁异常特征 |
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| 作者姓名： | 张玄杰 张婉 佟晶 范子梁 李筱 |
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| 作者单位： | 中国国土资源航空物探遥感中心,北京 100083 |
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| 基金项目： | 国家专项“海洋航空地球物理探测及应用(编号: GZH200900502)”和中国地质调查局“海南岛及周边航空物探调查(编号: DD20160141)”项目联合资助 |
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| 摘 要： | 为满足1:25万海洋区域地质调查需求,解决海陆过渡区的基础地质问题,在统一编制1:25万重力异常图和磁力异常图的基础上,分析日照—连云港地区主要断裂的重磁异常特征。结合区域地质资料,探讨郯庐断裂沂水段、桑墟—连云港断裂、东海—赣榆断裂的重磁异常特征及其地质意义。结果表明: 昌邑—大店断裂是郯庐断裂沂水段的主断裂; 作为苏鲁造山带的南部边界,桑墟—连云港断裂控制了基底、地层和岩浆岩的分布; 东海—赣榆断裂将苏鲁造山带分割为南、北2部分。这些新认识为日照—连云港地区基础地质研究提供了重要参考。
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| 关 键 词： | 重磁异常 郯庐断裂 桑墟-连云港断裂 东海-赣榆断裂 日照 连云港 |
| 收稿时间： | 2017-07-05 |
Magnetic and gravity anomaly characteristics of main faults in Rizhao-Lianyungang area |
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| Authors: | ZHANG Xuanjie ZHANG Wan TONG Jing FAN Ziliang LI Xiao |
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| Institution: | China Aero Geophysical Survey and Remote Sensing Center for Land and Resources, Beijing 100083, China |
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| Abstract: | In order to meet the requirements of 1:250 000 regional marine geological survey and solve essential geological problems of the onshore-offshore transition zone, based on the compilation of 1:250 000 magnetic and gravity anomaly map, the authors analyzed the magnetic and gravity anomaly characteristics of the main faults in Rizhao-Lianyungang area. According to regional geological materials, the authors discussed the magnetic and gravity anomaly characteristics and geological significances of the main faults, such as Yishui segment of Tanlu fault, Sangxu-Lianyungang fault and Donghai-Ganyu fault. The results show that Changyi-Dadian fault is the main fault of Yishui segment of Tanlu fault. And as the southern boundary of Sulu orogenic belt, Sangxu-Lianyungang fault controls the distribution of basement, strata and magmatic rocks. In addition, Donghai-Ganyu fault cuts Sulu orogenic belt into southern and northern segments. These new geological recognitions have provided important references for the geological research in Rizhao-Lianyungang area. |
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| Keywords: | magnetic and gravity anomalies Tanlu fault Sangxu-Lianyungang fault Donghai-Ganyu fault Rizhao Lianyungang |
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