中文摘要：

通过对青藏高原东南部及三江地区8个样品磷灰石和锆石裂变径迹分析、热史反演，对这一地区构造运动及隆升作用进行定量分析。表明青藏高原东南部新生代以来经历两次构造抬升期，在50Ma和6～5Ma，其特点是早期为缓慢隆升；晚期为快速抬升期，抬升速率为0．5mm／a。位于三江地区扬子地块的楚雄盆地构造隆升受青藏高原隆升的影响，受盆地中部构造和古隆起影响，盆地东西部次级坳陷在120—60Ma表现为相反垂向运动趋势，盆地表现为50Ma左右有一次相一致抬升运动趋势。总结本区裂变径迹年龄及长度分布规律，表明北东向构造分界明显，可能是印度地块与冈底斯地块碰撞后在东南无约束边界条件下侧向扩展形成。

英文摘要：

We analysis the regional tectonics uplift quantitatively and the thermal history inversion of in the southeast Tibet Plateau and Sanjiang area by 8 apatite and zircon fission track samples. The research indicates that the southeast Tibet Plateau experiences two tectonics uplift stages. The tectonics uplift is at 50 Ma and 6 - 5 Ma separately. Its characteristic is of slow uplift in the early stage, and fast uplift rate at 0.5 mm/a during the later stage. The tectonics uplift in Chuxiong Basin of Sanjiang area is affected by the middle fault and basement uplifts. The vertical movements are shown opposite trend in the Eastern and Western sub depression separately during 120 - 60 Ma. The cohesive uplift is occurred about 50 Ma affected by the Tibet Plateau uplift. The NE trend of ages and lengths distribution of samples in the area is resulted by the lateral extension on the condition of SE free boundary after Indian and Gangdese blocks collision.