张功成^1,,
贾庆军²,
王万银^3,,,
王璞珺⁴,
赵庆乐²,
孙晓猛⁴,
谢晓军¹,
赵钊¹,
唐武¹
1. 中海油研究总院有限责任公司, 北京 100027
2. 北京雪桦石油技术有限责任公司, 北京 100088
3. 长安大学重磁方法技术研究所, 长安大学地质工程与测绘学院, 西安 710054
4. 吉林大学地球科学学院, 长春 130061

基金项目: 国家科技重大专项（2016ZX05026，2011ZX05025，2008ZX05025）、国家自然科学基金重大研究计划"南海深海地质演变对油气资源的控制作用"（91528303）和国家重点基础研究发展规划（973）项目（2009CB219400）联合资助


详细信息

作者简介: 张功成, 男, 1966年生, 教授级高级工程师, 1994年博士毕业于中国地质大学, 主要从事海洋油气地质研究工作.E-mail:zhanggch@cnooc.com.cn

通讯作者: 王万银, 教授, 主要从事重磁位场数据处理、转换和重磁正反演理论研究等工作.E-mail:wwy7902@chd.edu.cn

中图分类号: P541;P738

收稿日期:2017-11-03
修回日期:2018-08-30
上线日期:2018-10-05

On tectonic framework and evolution of the South China Sea

ZHANG GongCheng^1,,
JIA QingJun²,
WANG WanYin^3,,,
WANG PuJun⁴,
ZHAO QingLe²,
SUN XiaoMeng⁴,
XIE XiaoJun¹,
ZHAO Zhao¹,
TANG Wu¹
1. CNOOC Research Institute Company Limited, Beijing 100027, China
2. Beijing XueHua Petrolum Technology Company Limited, Beijing 100088, China
3. Institute of Gravity and Magnetic Technology, School of Geology Engineering and Geomatics, Chang'an University, Xi'an 710054, China
4. College of Earth Science, Jilin University, Changchun 130061, China


More Information

Corresponding author: WANG WanYin,E-mail:wwy7902@chd.edu.cn

MSC: P541;P738

--> Received Date: 03 November 2017
Revised Date: 30 August 2018
Available Online: 05 October 2018


摘要
摘要:依据重磁资料在南海及其邻区识别出17条深大断裂和10个重磁异常区.据此并结合其他地质资料，在南海及其邻区划分出7个地质结构不同的构造单元.早白垩世南海地区曾形成过统一的基底，新生代时统一的南海基底发生肢解，这一个肢解过程经历了两个在时空上接踵发生、交叠作用的构造事件.第一个构造事件为巽他地块与华夏古陆之间古南海的萎缩、闭合和地块碰撞；第二个构造事件为南沙地块裂离华夏古陆并向巽他地块增生，且伴随新南海的持续扩张，直至中中新世.区域构造演化控制了南海沉积盆地呈"北三南三、东西两竖"格局分布，进而控制了油气富集区的分布.
关键词: 深大断裂/
构造地层组合/
地块/
古地磁/
油气/
南海

Abstract:Based on gravity-magnetic data, 17 deep major faults as well as 10 gravity-magnetic anomaly area have been identified in the South China Sea (SCS) and its adjacent area. Combined these results with other geological material, 7 tectonic units which have different geological structures can be divided in the SCS and its adjacent area. A uniform basement once formed in the Early Cretaceous in the SCS, and broke up during the Cenozoic. This breakup process experienced two tectonic events which happened one after another in spatial and overlapped. The first one was the shrinking, closing of the pro-SCS as well as collisions of blocks which located between the Sunda block and the Cathaysia archicontinent. The other one was the Nansha block broken up from the Cathaysia archicontinent, accreted to the Sunda block and associated with the continous expansion of the new SCS until to the Middle Miocene. Regional tectonic evolution had controlled the distribution of sedimentary basins in the SCS, forming "three basin belts in North continential margin, three basin belts in South continential margin, and one basin belt in East continential margin and one basin belt in West continential margin", which further controlled distributions of oil and gas enrichment area.
Key words:Deep major faults/
Tectono-stratigraphy combination/
Blocks/
Paleomagnetism/
Oil and gas/
South China Sea



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