我国大陆古板块运动演化的特征

Characteristics of fossil continental plate evolution and movement in China

洪汉净 马宗晋 程国梁 郑秀珍

Hong Hanjing Ma Zhongjin Cheng Guoliang Zheng Xiuzhen

应用地理信息系统,研究了显生宙以来中国及其邻区板块运动演变过程的特征。着重分析了多陆块拼合过程和中、新生代以来两种类型板块运动交替过程。中国大陆古板块不是由单一古地核发展而成的简单板块,是多个古地核或多陆块拼合而成的组合板块。中国大陆古板块演化是在全球板块运动的总体框架下进行的,受全球板块运动的控制。中、新生代以来,板块运动可以分为以开合(漂移)为主和以升降(裂解/焊接)为主的两种类型。两种类型的运动交替发生,与地幔对流一起构成了总的板块演化历史。

The characteristics of plate evolution and movement in China and adjacent areas since Phanerozoic have been studied by using GIS, with a focus on analyzing the matching process of multiple landmasses and the alternating process of the two types of plate movement since Meso-Cenozoic. The fossil continental plate in China was not a simple plate that had been developed from a single ancient Earth core, but a combination plate that resulted from the matching of several ancient Earth cores or multiple landmasses. The evolution of the fossil continental plate in China had been carried out under the general framework of global plate movement, thus it had been controlled by the global plate movement. Plate movement since Meso-Cenozoic can be divided into two types:one was dominated by opening and closing (drifting), and another was dominated by elevation and subsidence (splitting/bonding). These two types of plate movement occurred alternatively and constituted, in combination with mantle convection, the whole evolution history of the plate.

10.11743/ogg20050104