Faults role in formation and distribution of the mantle derived carbon dioxide gas pools: Case study of the Jiyang Depression in Bohai Bay Basin, China
文献类型：期刊论文
| 作者 | Li Li1; Zhong DaLai2; Yang ChangChun2; Zhao Li1 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2016-07-01 |
| 卷号 | 32期号:7页码:2209-2216 |
| 关键词 | Fault Mantle Derived Carbon Dioxide Mechanism Cenozoic Bohai Bay Basin |
| 文献子类 | Article |
| 英文摘要 | The formation and distribution of the mantle derived CO2 gas pool has great relationship of the faults. The mantle derived CO2 was mostly induced by mantle degassing by paleo Pacific Plate subduction in Early Cretaceous 143Ma and 124Ma, partial melting and upwelling of mantle in similar to 43Ma, 24 similar to 15Ma, and 8 similar to 4Ma. Also the degassing by alkaline basalt magma in similar to 43Ma, 24 similar to 15Ma, and 8 similar to 4Ma generated many mantle derived CO2. They dispersed and accumulated by different level faults. The Tanlu Fault, lithospheric fault of the study area, is the most important fault to gas's dispersion and accumulation, while the crustal fault like detachment faults and transfer faults acted as secondary important faults to the gas dispersing and accumulation. The shear or extension of these faults in Early Cretaceous 143 Ma and 124Ma, Cenozoic similar to 43Ma, 24 similar to 15 Ma, and 8 similar to 4Ma as well as the synsimultaneously alkaline basalt magma action controlled the formation, migration and accumulation of the mantle derived CO2 gas. Different level faults intersected and formed channel to gas, while the detached depth of the detachment faults (where is also the low velocity zone developed) and the decollement faults transferred by the disconformity and unconformity in cover are very important horizontal channels. In Early Cretaceous, mantle degassing CO2 by plate subduction dispersed and accumulated along the Tanlu fault. Controlled by the change of subduction direction and rate of the Pacific Plate to Eurasian Plate, mantle degassing CO2 induced by partial melting of the mantle migrated along the Tanlu Fault. Meanwhile, the Tanlu Fault cut gradually deeper into the mantle in similar to 43Ma, 24Ma and 8Ma (or 5Ma), which induced mantle magma degassing and derived CO2 gas. The mantle degassing CO2 gas migrated upwards along the fault due to Tanlu Fault strike slipping in Cenozoic, and converged to those gases from magma degassing in detached zone (also the low velocity zone). Then these gases migrated horizontally through the low velocity zone to the basement and cover. They accumulated to gas pools by relaying transmission along the decollement fault zone and steep fault zone. This study predicated that the area adjacent the Tanlu Fault may be the potential zone to the inorganic oil and gas. |
| WOS关键词 | EASTERN CHINA ; SHANDONG RISE ; ZONE ; HISTORY |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000381327100020 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/53336]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 作者单位 | 1.China Univ Petr, Sch Geosci, Qingdao 266580, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li Li,Zhong DaLai,Yang ChangChun,et al. Faults role in formation and distribution of the mantle derived carbon dioxide gas pools: Case study of the Jiyang Depression in Bohai Bay Basin, China[J]. ACTA PETROLOGICA SINICA,2016,32(7):2209-2216. |
| APA | Li Li,Zhong DaLai,Yang ChangChun,&Zhao Li.(2016).Faults role in formation and distribution of the mantle derived carbon dioxide gas pools: Case study of the Jiyang Depression in Bohai Bay Basin, China.ACTA PETROLOGICA SINICA,32(7),2209-2216. |
| MLA | Li Li,et al."Faults role in formation and distribution of the mantle derived carbon dioxide gas pools: Case study of the Jiyang Depression in Bohai Bay Basin, China".ACTA PETROLOGICA SINICA 32.7(2016):2209-2216. |
入库方式： OAI收割
来源：地质与地球物理研究所
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