华东地质2026，Vol.47Issue(3)：464-475,12.DOI:10.16788/j.hddz.32-1865/P.2025.06.009
南汀河断裂北段活动构造特征关联"澜沧江大拐弯"成因浅析
Activity structural characteristics of the northern section of the Nanting River Fault and their implications for the genesis of"Lancang River Great Bend"
摘要
Abstract
The Nanting River Fault is a large-scale northeast-trending strike-slip active fault sandwiched be-tween the Red River Fault and the Sagaing Fault,with intense activity during the Quaternary period.However,it remains unclear whether this fault extends northward and cuts through the Lancang River Fault,and how it af-fects the formation of the"Lancang River Great Bend".Hyperspectral remote sensing technology can efficient-ly support large-scale investigation on fault structures.Based on the Landsat 8 optical satellite remote sensing im-ages after digital image processing and combined with 30 m resolution ASTER DEM data,this paper focuses on the remote sensing interpretation of the northern section of the Nanting River Fault and its associated influence area related to the"Lancang River Great Bend",and establishes interpretation signs.The results show that the northern section of the Nanting River Fault does not cut through the Lancang River Fault,but causes the twisting and dragging deformation of the Lincang granite dikes in the north to Yun County,resulting in the deviation of the Lancang River water system in the area.The northern section of the fault divides into an eastern and a western branch,which converge near Dabingnong Village in Yun County and"pinch out"near Biji Guo Village in Yun County,indicating that it has undergone left-lateral strike-slip movement.The toppling effect has further devel-oped and continuously evolved the"Lancang River Great Bend".关键词
南汀河断裂/高分遥感/线性构造解译/澜沧江大拐弯Key words
the Nanting River Fault/high-resolution optical remote sensing/linear structure interpretation/"Lancang River Great Bend"分类
天文与地球科学引用本文复制引用
柴旺,赵志芳,陈荟颖,王崇军,刘宇成..南汀河断裂北段活动构造特征关联"澜沧江大拐弯"成因浅析[J].华东地质,2026,47(3):464-475,12.基金项目
云南省科技厅-云南大学联合基金"腾冲—潞西地区新生代以来地质环境演化及高原特色农业耦合关系研究[编号:2018FY0019(-019)]"项目资助. （-019）
