Basin Type and Dynamic Environment in the East China Sea Shelf Basin
Basin Type and Dynamic Environment in the East China Sea Shelf Basin
复制标题
DOI：
--
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Zhang Jianpe
中科院分区：
文献类型：
--
作者：
Zhang Jianpe
东中国海陆架盆地位于欧亚板块东南缘的南中国地块(西含扬子地块，东包括华夏陆块)，其基底是华夏陆块的延伸部分，也是西太平洋大陆边缘构造域的重要组成部分。通过全球板块构造演化分析，位于西太平洋三角区的东太平洋陆架盆地是印澳板块、太平洋板块和欧亚板块的巨大汇聚带，也是全球汇聚中心，与特提斯和西太平洋构造域的演化密切相关。欧亚板块与太平洋板块的碰撞俯冲与弧后扩张以及印澳板块与欧亚板块的会聚、碰撞与挤压的长距离效应以及地球深部动力学效应共同控制着欧亚板块的弧后盆地，其形成机制符合被动伸展模式，地幔东向流动和软流圈向下流动是造成地球深部弧后扩张动力源的主要原因。
The East China Sea shelf basin(ECSSB)is located in the South China block(including the Yangtze block in the west and the Cathaysian block in the east)in the southeastern margin of the Eurasian plate.The basement of the ECSSB is the extension part of the Cathaysian block,and is also an important part of West Pacific continental margin tectonic domain.By the analysis of global plate tectonic evolution,the ECSSB situated in the triangle region of West Pacific is the huge convergence zone of India-Australian plate,the Pacific plate and the Eurasian plate,and also the global convergence center.It is closely related to evolution of the Tethys and the West Pacific tectonic domains.Overall,the ECSSB is a back-arc basin,which is controlled by the co-action of collision,subduction and back-arc spreading between the Eurasian plate and the Pacific plate and long-distance effect of the convergence,collision and extrusion between the India-Australian plate and the Eurasian plate and deep earth dynamics effect.The formation mechanism of the ECSSB is according with passive extension mode.The mantle flow in east direction and the asthenosphere down flow are the main causes of the back-arc spreading power source in deep Earth.