Structural characteristics and tectonic division of the Zambezi Delta basin in the offshore East Africa: evidences from gravity and seismic data
文献类型：期刊论文
| 作者 | Fan, Guozhang5; Li, Wen4; Ding, Liangbo5; Wang, Wanyin2,3,4; Wang, Hongping5; Wang, Dingding1,4; Li, Lin5; Wang, Hao4; Wang, Chaofeng5 ; Wang, Qingluan4
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| 刊名 | ACTA OCEANOLOGICA SINICA
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| 出版日期 | 2024-04-01 |
| 卷号 | 43期号:4页码:105-118 |
| 关键词 | Zambezi Delta basin satellite altimetry gravity anomaly Beira High fault division uplift and depression pattern |
| ISSN号 | 0253-505X |
| DOI | 10.1007/s13131-024-2338-3 |
| 通讯作者 | Wang, Wanyin(wwy7902@chd.edu.cn) |
| 英文摘要 | The Zambezi Delta basin is a passive marginal basin located on the East African coast that has good oil and gas exploration potential. Due to the special geological evolutionary background of the Beira High in the Zambezi Delta basin, it has a low gravity anomaly, and the existing seismic survey lines do not cover the whole basin; therefore, it is difficult to interpret the structural characteristics of the whole basin based solely on gravity or seismic data. Based on satellite altimetry gravity anomaly data, this study infers the distribution characteristics of faults in the Zambezi Delta basin by using the normalized vertical derivative of the total horizontal derivative (NVDR-THDR) technique. Then, constrained by seismic data, the gravity anomaly at the Moho interface is extracted by using the fast forward method of the double-interface model of the gravity anomaly, and this anomaly is then removed from the Bouguer gravity anomaly to obtain the sedimentary layer gravity anomaly. The thickness of the sedimentary strata is obtained by inversing the sedimentary basement depth of the whole basin. Then, uplifts and depressions are divided based on a sedimentary layer thickness of 3 km. This research demonstrates that the Zambezi Delta basin mainly features nearly SN-trending and NE-trending faults and that these faults exhibit east-west partitioning. The nearly SN-trending strike-slip faults controlled the sedimentary development of the basin, and the NE-trending tensile faults may have acted as migration channels for oil, gas and magma. The "overcompensation" effect of the Moho interface gravity anomaly on the gravity anomaly of the sedimentary layer is caused by the depression of the Moho interface beneath the Beira High, which results in a low gravity anomaly value for the Beira High. The pattern of uplifts and depressions trends NE and has the structural characteristics of east-west blocks. |
| WOS关键词 | POTENTIAL-FIELD DATA ; CRUSTAL STRUCTURE ; BREAK-UP ; MOZAMBIQUE ; MAGMATISM ; INSIGHTS ; MARGIN |
| 资助项目 | Petrochina Basic Prospective Science and Technology Research Project-Overseas deepwater ultra-deepwater oil and gas exploration technology research topic[2021DJ2403] |
| WOS研究方向 | Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:001269641500008 |
| 出版者 | SPRINGER |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/186260]  |
| 专题 | 海洋研究所_海洋地质与环境重点实验室 |
| 通讯作者 | Wang, Wanyin |
| 作者单位 | 1.Univ Naples Federico II, Dept Earth Environm & Resources Sci, I-80138 Naples, Italy 2.Chinese Acad Sci, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 3.Natl Engn Res Ctr Offshore Oil & Gas Explorat, Beijing 100028, Peoples R China 4.Changan Univ, Coll Geol Engn & Geomat, Xian 710054, Peoples R China 5.PetroChina, Hangzhou Res Inst Petr Geol, Hangzhou 310023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fan, Guozhang,Li, Wen,Ding, Liangbo,et al. Structural characteristics and tectonic division of the Zambezi Delta basin in the offshore East Africa: evidences from gravity and seismic data[J]. ACTA OCEANOLOGICA SINICA,2024,43(4):105-118. |
| APA | Fan, Guozhang.,Li, Wen.,Ding, Liangbo.,Wang, Wanyin.,Wang, Hongping.,...&Zhang, Ying.(2024).Structural characteristics and tectonic division of the Zambezi Delta basin in the offshore East Africa: evidences from gravity and seismic data.ACTA OCEANOLOGICA SINICA,43(4),105-118. |
| MLA | Fan, Guozhang,et al."Structural characteristics and tectonic division of the Zambezi Delta basin in the offshore East Africa: evidences from gravity and seismic data".ACTA OCEANOLOGICA SINICA 43.4(2024):105-118. |
入库方式： OAI收割
来源：海洋研究所
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