怒江、澜沧江、金沙江断裂带北段第四纪活动特征  

Quaternary Activity of the Northern Part of Nujiang, Lancangjiang and Jinshajiang Fault Zones

作　　者：赵彦博 李振江[2,3] 李高保 孙勇 宋伟[2,3] 蔡永丰 

机构地区：[1]桂林理工大学地球科学学院,广西 桂林 [2]四川省地质矿产勘查开发局区域地质调查队,四川 成都 [3]四川省容大矿业集团有限公司,四川 成都

出　　处：《地球科学前沿(汉斯)》2024年第12期1570-1577,共8页Advances in Geosciences

基　　金：本研究受四川省地质矿产勘查开发局“滇藏铁路怒江、澜沧江、金沙江段构造现今活动性预研究”课题资助。

摘　　要：断裂的第四纪活动性是重大工程建设项目评价的一个重要因素,川藏铁路成雅段和拉林段已建成通车,雅林段仍在规划建设中。为雅林段的规划建设和安全运营提供依据,本文综合相关重要文献资料,对雅林段穿越的怒江、澜沧江和金沙江三大断裂带的活动性进行了总结。结果显示,怒江断裂带中的边坝–洛隆断裂和邦达断裂为全新世活动断裂。澜沧江断裂带北段的昌都段为全新世活动断裂,芒康段为早–中更新世活动断裂,局部存在全新世活动迹象;南段为早–中更新世活动断裂。金沙江断裂带中段晚第四纪活动显著,局部具有晚更新世–全新世活动性;南段目前没有发现第四纪活动迹象。Quaternary activity of fault is an important factor for large construction projects. The Cheng-Ya and La-Lin parts of the Sichuan-Tibet railway have been completed, but the Ya-Lin part is still in planning and construction. In order to provide evidence for planning, construction and operation of the Ya-Lin railway, quaternary activity of the northern part of Nujiang, Lancangjiang and Jinshajiang fault zones was summarized according to the available important references. It is suggested that the Bianba-Luolong and Banda faults in the Nujiang fault zone are activity holocene faults. The Changdu part of the north Lancangjiang fault zone shows holocene activity, and the Mangkang part shows that early-middle pleistocene activity with a few has holocene activity. The south Lancangjiang fault zone shows early-middle pleistocene activity. The middle Jinshajiang fault zone shows obvious late quaternary activity with a few shows late pleistocene-holocene activity. The south Jinshajiang fault zone has shown no obvious quaternary activity so far.

关 键 词：断裂活动性 三江断裂带 第四纪 川藏铁路 

分 类 号：P53[天文地球—古生物学与地层学]