关于川滇地区晚全新世（距今约3000年）可能存在一次构造运动的讨论

DISCOVERING OF A RECENT TECTONIC MOVEMENT IN LATE HOLOCENE(THE LAST 3000 YEARS) IN SICHUAN-YUNNAN REGION

本文在对比研究川滇炉霍、石棉～冕宁间、嵩明、大理、下关等地，前人所做全新世构造活动资料的基础上，结合近年沿同上地点主要开挖剖面及年代学成果，提出距今约３０００年，可能存在一次重要的构造事件。包括构造位错、古地震的证据表明，晚全新世以来沿炉霍－嵩明这一青藏高原东边界断裂，可能具有一致的运动速率。

On the basis of the tectonic unconformity interfaces, revealed from the sections along main active faults at Luhuo, Shimian, Mianning, Songmtng, Dali in Sichuan-Yunnan region, and the age dating results of these interfaces, the paper believes that an important tectonic movement occurred there 3000 years ago. The main motion mode of the faults evolved to horizontal movement from vertical movement. Combined with the evidences of tectonic dislocations and paleoearthquakes for 3000 years, the rates of fault movement in Late Holocene obtained on the whole and the tectonic zone along plateau margin ranging form Luhuo to Songming had uniform motion state.