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世界地质 2017, 36(4) 1199-1208 DOI:
ISSN: 1004-5589 CN: 22-1111/P |
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| 基础地质 |
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渤海海域断裂组合样式与幔源CO_2分布的关系 |
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刘子林，王璞珺，徐建永，鲁宝亮，李楠，唐华风 |
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1. 吉林大学 地球科学学院，长春 130061; 2. 东北亚生物演化与环境教育部重点实验室，长春 130026; 3. 国土资源部 东北亚资源矿产评价重点实验室，长春 130061; 4. 中海油研究总院，北京 100027; 5. 长安大学 地质工程与测绘学院，西安 710054 |
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摘要：
应用钻井、三维地震等资料，对渤海海域断裂组合样式进行详细划分，并在此基础上分析 CO 2 气 (藏) 分布与断裂组合样式间的关系。研究表明，渤海地区存在 4 大类断裂组合样式: 伸展断裂及其组合样式、走滑断裂及其组合样式、反转构造及其组合样式和伸展--走滑复合组合样式。其中具有 Y 字形似花状构造的断裂 CO 2 气聚集的风险性最高，负花状构造及铲式断层风险次之，反转构造风险性最低。结合莫霍面特征可知，在莫霍面上拱区的具有 Y 字形似花状构造区域是 CO 2 聚集的高风险区。 |
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关键词：
渤海
CO2 气
断裂组合样式
莫霍面
CO2 高风险断裂
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Ｒelationship between fault combination styles and mantle source CO2 distribution in Bohai area |
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LIU Zi-lin，WANG Pu-jun，XU Jian-yong，LU Bao-liang，LI Nan，TANG Hua-feng |
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1. College of Earth Sciences，Jilin University，Changchun 130061，China; 2. Key--Lab of Evolution of Past Life and Environment in Northeast Asia，Ministry of Education，Changchun 130026，China; 3. Key Laboratory of Mineral Ｒesources Evaluation in Northeast Asia，Ministry of Land and Ｒesources of China， Changchun 130061，China; 4. CNOOC Ｒesearch Institute，Beijing 100027，China; 5. College of Geology Engineering and Geomatics，Chang＇an University，Xi＇an 710054，China |
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Abstract:
Based on the drilling and 3D seismic data，a detailed study of the fault combination styles in the Bohai area is undertaken，and the rules of the distribution of the CO 2 gas reservoir and the fault combination styles are analyzed． The results show that there are four major types of fault assemblages in Bohai area，i.e. extensional faults and their combination styles，strike-slip faults and their combination styles，inversion structures and their combination styles，and extensional and strike-slip combination styles． The fault with Y-shape semi-flower structure has the highest risk for CO 2 accumulation，whereas negative flower structure and listric fault have lower risk，and inversion structure has the lowest risk． Integrating the features of Moho，the region with Y shape semi-flower struc- ture over the Moho uplift is the high risk area for CO 2 accumulation． |
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Keywords:
Bohai
CO2 gas
fault combination styles
Moho
high risk area for CO2
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