地理科学 ›› 2004, Vol. 24 ›› Issue (3): 286-291.doi: 10.13249/j.cnki.sgs.2004.03.286

• 论文 • 上一篇    下一篇

中国热带第四纪板块构造的地貌效应

黄镇国1, 张伟强2   

  1. 1. 广州地理研究所, 广东 广州 510070;
    2. 广东商学院, 广东 广州 510320
  • 收稿日期:2003-07-21 修回日期:2003-12-18 出版日期:2004-05-20 发布日期:2004-05-20
  • 基金资助:
    国家自然科学基金项目(40071011, 49271070)。

Geomorphological Effects of Plate Movement During Quaternary in China's Tropics

HUANG Zhen-Guo1, ZHANG Wei-Qiang2   

  1. 1. Guangzhou Institute of Geography, Guangzhou 510070, China;
    2. Guangdong Business College, Guangzhou 510320
  • Received:2003-07-21 Revised:2003-12-18 Online:2004-05-20 Published:2004-05-20

摘要: 青藏高原上新世以来强烈隆起,反映印度板块与欧亚板块的碰撞。台湾岛中央山地也是上新世开始隆起,反映弧陆碰撞。这是中国热带第四纪构造地貌的东、西两个力源,其地貌效应表现在台湾岛的崛起、南海海盆的持续沉降、三个巨大弧形山系的发展、第四系厚度的区域差异、中更新世以来河流阶地的普遍发育、岩溶地貌类型的区域差异、板缘和板内火山活动、近期地壳形变的分布。多种现象表明,东、西构造力源的交接地带为110°E左右。

Abstract: The eastern and westwern fronts of plate movement in Taiwan Island and Tibetan Plateau respectively are the sources of tectonic force for a series of tectonism and morphogenesis in China's tropics. Seven examples of geomorphological effects of plate movement are enumerated to discuss the differentiation of tectonic landforms in space and time during Quaternary.The dynamic source western front is stronger than that of eastern, for example the length of collision zone in western reachs 2 000km but only 200km in eastern and the width of seismic zone is 800~1 800km in western but only 350km in eastern. The more near by sources of tectonic force is, the more obvious will be the geomorphological effects of plate movement. For example the Yushan Mountain of Taiwan Island has the highest peak in the islands of the western Pacific Ocean. The emergence rate of central mountains in Taiwan occupies the first place in the world. The shape of Taiwan Island became curved to continent rather than to ocean as a unique example in island arc system of western Pacific Ocean. In western tropics the deep fracture valleys of Hengduan Mountain are very famous. There are 1 000 or more fault basins with thickness of 100-600m of the Quaternary in Yunnan Plateau. The tectonic movement tends to be more active since the Middle Pleistocene. For example the gravel layers were deposited extensively at that time. The river terraces with multi-level are mostly formed since the Middle Pleistocene. The most active stage of volcanism also occurred during Middle Pleistocene. The zone neat by 110癊 can be regarded as the juncture of western and eastern tectonic force. Because here the common apex of three ranges of arc-shape mountains curved southwards,the most extensive distribution of the Quaternary basalts in China,and the transform zone of crustal deformation can be seen.

中图分类号: 

  • P542