从亚洲东岸洋壳流看东亚陆缘扩张带的成因  

The Origin of the East Asian Continental Margin Spreading Zone as Viewed from the Oceanic Crust Current over the East Coast of Asia

作　　者：赵大咏 刘石年[2] ZHAO Da-yong;LIU Shi-nian(Yueyang Bureau of Civil Affairs,Yueyang,Hunan 414000;School of Earth Sciences,Central South University,Changsha 410083)

机构地区：[1]岳阳市民政局,湖南岳阳414000 [2]中南大学地学院,长沙410083

出　　处：《四川地质学报》2022年第2期179-186,共8页Acta Geologica Sichuan

摘　　要：我国学者原创的洋壳流力学理论,从流体力学的本质,从现代与历史变迁的角度,推导出强大的、超大范围的由大陆指向海洋的力作用,并找出东亚陆缘扩张带的成因,如:通过对亚洲南下洋壳流与印度洋洋壳流的对峙,分析了东亚陆缘扩张带东南段的成因;同时分析了亚洲南下洋壳流分支北部湾回旋洋壳流对海南岛成因的影响。结合大陆演化,分析了大西洋扩张时,使太平洋洋壳流向西挤压,迫使印度洋洋壳流不断自东北向西南后退;这两股洋壳流对峙形成连续的回旋洋壳流,导致产生一连串的圆弧状陆缘海。洋壳流力学理论比以往的地质力学理论,更能精准定位、精准描述,对一个很小的地质现象能够清晰地全球溯源,如海南岛海口火山的成因,可以从南极洲开始,画一条清晰、连续的洋壳流力作用发展路线图,这是其他地质力学理论做不到的。我国学者原创的洋壳流力学理论如果是错误的,它不可能解释如此多的地质现象,也不可能找到如此多的证据作支撑。Theory of ocean crust flow mechanics is created by Chinese scholars. It identifies the origin of the East Asian continental margin spreading zone and the influence of the Gulf of Tonkin cyclonic ocean crust current as a branch of the Asian ocean crust flow on the genesis of Hainan Island. Westward compression of the Pacific ocean crust flow due to the Atlantic expand forces the Indian Ocean crust current to constantly retreat from the northeast to the southwest. The confrontation of the two oceanic currents forms a continuous gyratory ocean crust current which leads to the creation of a series of arcuate marginal seas. The theory of ocean crust flow can accurately locate and describe the track of plate motion.

关 键 词：冲刷拉伸作用 对峙线 齿轮旋转模式 劳亚古陆 白令海回旋洋壳流 闭环 

分 类 号：P541[天文地球—构造地质学]