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。
The eastern and western fronts of plate movement in Taiwan Island and Tibetan Plateau respectively are the two major sources of tectonic force for the morphogensis during Quaternary 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 tectonic movement tends to be more active since middle Pleistocene. Some phenomena such as the arc-shape mountain systems, volcanism and crustal deformation imply that the juncture zone of eastern and western tectonic forces is located at about 110 o E.
出处
《地理科学》
CSCD
北大核心
2004年第3期286-291,共6页
Scientia Geographica Sinica
基金
国家自然科学基金项目(40071011
49271070)。
关键词
板块构造
地貌效应
中国热带
plate tectonic
geomorphological effect
China's tropics
