| 东海陆架盆地南部中生界沉积模式 |
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| 引用本文： | 王蛟,李智高,蔡来星,龚奇勇.东海陆架盆地南部中生界沉积模式[J].吉林大学学报(地球科学版),2019,49(1):131-138. |
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| 作者姓名： | 王蛟 李智高 蔡来星 龚奇勇 |
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| 作者单位： | 1. 中国地质调查局青岛海洋地质研究所, 山东 青岛 266071;2. 青岛海洋科学与技术试点国家实验室海洋矿产资源评价与探测技术功能实验室, 山东 青岛 266071;3. 中海石油(中国)有限公司深圳分公司, 广东 深圳 518000 |
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| 基金项目： | 国家自然科学基金项目（41476053）；国家海洋地质专项（DD20160147）；中国地质调查局项目（DD20160153，DD20190211） |
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| 摘 要： | 在沉积相综合分析基础之上，通过地震相分析的手段明确了东海陆架盆地南部中生界的沉积特征；结合古地理背景分析，建立了该区侏罗纪和白垩纪的沉积模式。侏罗纪时雁荡低凸起和瓯江凹陷均未形成，闽江凹陷和基隆凹陷连为一体，物源来自浙闽隆起区，发育滨浅海沉积体系，火山作用较为强烈。白垩纪晚期-古新世，随着太平洋板块俯冲角度的加大，浙闽隆起区发生裂陷，雁荡低凸起形成。西部的瓯江凹陷沉积了一套陆相的冲积扇-河流-三角洲-湖泊沉积体系；由于此间台北低凸起尚未起到分割作用，东部的闽江凹陷与基隆凹陷仍然连为一体，物源来自浙闽隆起带和台北水下火山岩带，发育滨浅海沉积体系，火山作用影响强烈。
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| 关 键 词： | 东海陆架盆地 中生界 沉积体系 沉积模式 |
| 收稿时间： | 2018-05-24 |
Sedimentary Model of Mesozoic in the Southern Part of the East China Sea Shelf Basin |
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| Wang Jiao,Li Zhigao,Cai Laixing,Gong Qiyong.Sedimentary Model of Mesozoic in the Southern Part of the East China Sea Shelf Basin[J].Journal of Jilin Unviersity:Earth Science Edition,2019,49(1):131-138. |
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| Authors: | Wang Jiao Li Zhigao Cai Laixing Gong Qiyong |
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| Institution: | 1. Qingdao Institute of Marine Geology, China Geological Survey, Qingdao 266071, Shandong, China;2. Laboratory for Marine Mineral Resources, Pilot National Laboratory for Marine Science and Technology(Qingdao), Qingdao 266071, Shandong, China;3. Shenzhen Branch, Cnooc(China) co., LTD. Shenzhen 518000, Guangdong, China |
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| Abstract: | Based on the comprehensive study of sedimentary facies, the authors clarified the sedimentary characteristics of Mesozoic in the southern part of the East China Sea Shelf basin by means of seismic facies analysis. After the unit analysis of paleo-geographic setting,the sedimentary model of Jurassic and Cretaceous in this area is established. In Jurassic, neither Yandang low uplift nor Oujiang pit was formed, and the Minjiang pit and the Keelung pit were integrated. During the Late Cretaceous-Paleocene, with the increase of the subduction angle of the Pacific plate, the Zhejiang-Fujian uplift area was destroyed, forming the Yandang low uplift, and a continental alluvial fan fluvial River delta lake depositional system was deposited in the Oujiang pit in western China. Because the Taipei low uplift had not yet played the role of segmentation, the Minjiang pit in the East and the Keelung pit were still connected, the source came from the Zhejiang-Fujian uplift zone and the Taipei underwater volcanic rock zone. The coastal shallow sea depositional system was developed, and the volcanism had a strong influence. |
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| Keywords: | East China Sea Shelf basin Mesozoic depositional system sedimentary model |
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