摘要
云南澜沧地区的逆冲推覆构造很发育,可划分为老厂、孟连—澜沧、孟梭及竹塘—澜沦等四个带。推覆构造由推覆体、飞来峰、构造窗、逆冲断层及原地系统等组成,推覆体变形弱、摺皱不发育,符合冲断式推覆模式,具有双重逆冲构造结构,宏观与微观构造都表明形成于较浅丝鲤造层次。推碑构造的形成演化与澜裂谷的发展有关,可划分为三期。逆冲推覆的区域应力来自地体向东的碰撞拼接,是印度板块与扬子板块汇聚的重要构造事件。
The thrust nappe structure is very developed in the Lancang region, Yunnan, which can be divided into 4 Zones, ie Laochang, Menglian-Lancang, Mengsuo and Zhutang、The nappe structure is composed of nappe, klippe, window, thrust and autochthone. The nappe is de-formed weakly and folded less, which coincides with the thrust nappe model and displays the bi-thrust structure. And both macroand micro-structure appear to be formed in the shallow structural Level. The formation and evolution of the nappe structure relate to the develop-ment of the Lancang Rift, which can be divided into 3 periods. The regional stress of the thrust nappe is resulted from the eastward collision conjunction of the terrain, which is the important structural event in the convergence of the Indian Plate and the Yangzi Plate.
出处
《云南地质》
1993年第4期357-366,共10页
Yunnan Geology
