拉萨北部夺底沟东嘎山周边第三纪古喀斯特地貌特征及其地质意义  

Feature of Tertiary paleokarst landform and its geological significance of Donga hill and surroundings in Duodi Valley, Northern Lhasa

作　　者：土登次仁[1] 叶进[1] 白玛康珠 扎拉 次仁罗布[1] 

机构地区：[1]西藏大学理学院,西藏拉萨850000

出　　处：《西藏大学学报（社会科学版）》2016年第5期18-22,30,共6页Journal of Tibet University

基　　金：2015年度西藏自治区大学生创新性实验训练计划项目"拉萨市周边古喀斯特地貌成因及其地质意义"阶段性成果;项目号:2015QCX009

摘　　要：青藏高原地区的喀斯特现象一直是国内外研究的热点问题。文章在拉萨市北部的夺底沟东嘎山及周边地区发现了石灰岩峰丛和溶沟,并且在东嘎山内部发现了复杂的溶洞地貌和流水沉积物。文章认为,这些典型的古喀斯特地貌——古溶洞群、古峰丛和古溶沟应是在晚第三纪发育,并在地球演化过程中由丰富的活动性流水塑造的;发育在此地区的古喀斯特地貌又是拉萨河谷气候在第三纪晚期发生巨变的有力证据。The karst phenomenon in the Qinghai-Tibet Plateau has been a hot researchissue in the world. The Donga hill and its surroundings at Duodi Valley in Northern Lhasa as the study site, the limestone peak cluster,karst ditch and the complex karst cave landscape and flowing sediment were found during the investigation. We considered that the typical ancient karst geomorphology had to be developed in the Late Tertiary and had been shapedby the rich activitive flowing waterin the process of earth evolution.

关 键 词：拉萨 夺底沟 第三纪 古喀斯特地貌 

分 类 号：P931[天文地球—自然地理学]