东南亚安达曼‒苏门答腊‒爪哇弧后盆地的沉积‒构造特征与动力学机制  

Sedimentary-structural Characteristics and Dynamic Mechanisms of the Andaman-Sumatra-Java Back-arc Basin,Southeast Asia

作　　者：殷征欣 蔡周荣 姚永坚 吴东伟 隋新 陈亮 郑浩 董振 YIN Zhengxin;CAI Zhourong;YAO Yongjian;WU Dongwei;SUI Xin;CHEN Liang;ZHENG Hao;DONG Zhen(South China Sea Marine Survey Center,Ministry of Natural Resources/Key Laboratory of Marine Environmental Survey Technology and Application,Ministry of Natural Resources,Guangzhou 510300,Guangdong,China;School of Marine Sciences,Sun Yat-Sen University,Zhuhai 519082,Guangdong,China;Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou),Guangzhou 511458,Guangdong,China;Guangzhou Marine Geological Survey,China Geological Survey,Guangzhou 510075,Guangdong,China;Tianjin Design Institute of Beijing Project Management Company,China National Petroleum Corporation,Tianjin 300280,China)

机构地区：[1]自然资源部南海调查中心,自然资源部海洋环境探测技术与应用重点实验室,广东广州510300 [2]中山大学海洋科学学院,广东珠海519082 [3]南方海洋科学与工程广东省实验室(广州),广东广州511458 [4]中国地质调查局广州海洋地质调查局,自然资源部海底矿产资源重点实验室,广东广州510075 [5]中国石油北京项目管理公司天津设计院,天津300280

出　　处：《大地构造与成矿学》2025年第2期246-256,共11页Geotectonica et Metallogenia

基　　金：国家自然科学基金项目(U20A20100、42106079、41706055)资助。

摘　　要：安达曼‒苏门答腊‒爪哇岛弧带发育于东南亚复杂沟‒弧‒盆体系中,由印度‒澳大利亚板块俯冲至亚洲大陆之下所形成的一系列环型带状岛弧构成。沿此岛弧带分布着一系列弧后沉积盆地,其油气资源的勘探与开发是我国与东盟国家战略合作关系的重要组成部分。目前对于该系列弧后盆地的结构构造以及动力学机制尚未进行系统研究,严重制约对其油气规律的认识。本文通过对研究区弧后盆地及周边区域地质地球物理资料的系统分析,深入探究了该系列盆地的沉积‒构造特征、构造演化规律以及动力学机制,认为这些盆地在同裂谷阶段早期受板块俯冲后撤的影响,同裂谷晚期则受板块俯冲引起的弧后扩张作用控制,后裂谷阶段早期盆地表现为相对稳定的坳陷沉积,晚期则发生构造反转作用。安达曼‒苏门答腊‒爪哇弧后盆地形成的主要动力源自西南边印度板块与澳大利亚板块的俯冲作用,而两大板块在俯冲时间、俯冲角度等方面的差异是造成各盆地在沉积‒构造演化上独具特性的主要原因。The Andaman-Sumatra-Java island arc belt is developed in the complex trench-arc-basin system of Southeast Asia and is composed of a series of zonal island arcs generated by subduction of the Indo-Australian Plate to the East Asian continent.A series of back-arc sedimentary basins have been developed along the island arc belt,and the exploration and development of oil and gas resources is an important part of the strategic cooperation between China and ASEAN(Association of Southeast Asian Nations).At present,the structure and dynamic mechanisms of this series of back-arc basins have not been systematically studied,which significantly restricts our understanding of the hydrocarbon accumulation in these basins.In this paper,the sedimentary-structural characteristics,tectonic evolution,and dynamic mechanisms of this series of basins were studied by systematically analyzing the geological and geophysical data of the back-arc basins and regions in the study area.We propose that these basins are controlled by subduction retreating of the Australian plate in the early syn-rift stage and by backarc expansion caused by plate subduction in the late syn-rift stage.In the early post-rift stage,the basins exhibited relatively stable depression deposition,and tectonic inversion occurred in the late stage.The main dynamics of the formation of the Andaman-Sumatra-Java back-arc basin were mainly derived from subduction of the Indian and Australian plates in the southwest,and the difference between the two plates in subduction time and angle were the main reasons for the uniqueness of the sedimentary structural evolution of each basin.

关 键 词：东南亚岛弧带 弧后盆地 构造演化 动力学机制 

分 类 号：P542[天文地球—构造地质学]