自然杂志 ›› 2019, Vol. 41 ›› Issue (1): 63-70.doi: 10.3969/j.issn.0253-9608.2019.01.010

• 自然论坛 • 上一篇    下一篇

全球岩石圈板块为什么会运移?

WAN Tianfeng,YIN Yanhong   

  1. ①中国地质大学 地球科学与资源学院,北京 100083;②中国地质调查局 青岛海洋地质研究所,山东 青岛 266071
  • 收稿日期:2018-09-05 出版日期:2019-02-25 发布日期:2019-02-24
  • 作者简介:万天丰 通信作者,研究方向:构造地质学与大地构造学。

Why the global plates can migrate?

WAN Tianfeng,YIN Yanhong   

  1. ①Department of Earth Science and Resources, China University of Geosciences, Beijing 100083, China;②Qingdao Institute of Marine Geology, China Geological Survey, Qingdao 266071, Shandong Province, China
  • Received:2018-09-05 Online:2019-02-25 Published:2019-02-24

摘要:

全球岩石圈板块运移的动力学机制,长期以来始终是一个议而不决的难题。地质演化历史的大量信息都埋藏在岩石圈内部,很少出露地表。然而,近2亿年来的地质信息出露比较多,资料也比较可靠,学者可对此问题进行探讨。根据全球中、新生代7次板块运动模式的变化,可以认为岩石圈板块的运动是由巨大的陨石撞击地球表层诱发的,而不是如流传很广的“地幔传送带模式”假说所认为的那样产生的。每隔3 300万年左右,地球都会随太阳系一起穿越一次星际物质较密集的
银道面,引起引力场的巨变。引力场的改变使一些小行星改变其原来的运行轨道,从而导致地球表层受到来自陨石的不同角度的撞击,诱发地球岩石圈板块运动方向或模式的改变。

关键词: 岩石圈板块运移, 地球动力学机制, 巨大陨石撞击, 银道面

Abstract:

The dynamics of global plate migration is a very interesting project, but never solved in last fifty years. Many researchers thought that the plates must be migrated by the mantle “transporter model”, but that was not true. Due to the most of geological data were hidden in the earth, however, in the last 200 million years the geological data were more emerged, thus let us to discuss the seven models of the dynamics of global plate migrations. The authors proposed a new plate tectonic dynamics hypothesis for last 200 Ma. The solar system penetrated the galactic (Milky Way) plane in each 33 Ma and let the giant meteorites impact the Earth on the different areas with different angles to form the different plate migration models. According to this new hypothesis, the meteorite impact on Earth is a result of interplanetary gravity change in the solar system.