冰蚀三角脊链的发现及其在地貌演化研究中的意义  

Discovery of glacial triangle ridge chains and its significance in geomorphologic interpretation

作　　者：王照波 王江月[5] 田晓明 WANG Zhaobo;WANG Jiangyue;TIAN Xiaoming(Key Laboratory of Gold Mineralization Process and Resource Utilization of the Ministry of Land and Resources,Jinan 250013,Shandong,China;Yimeng National Geological Park Management Office,Linyi 273304,Shandong,China;Natural Resources and Planning Bureau of Pingyi County,Linyi 273304,Shandong,China;Shandong Compass Mineral Exploration co.,Ltd,Linyi 276006,Shandong,China;College of Geography and Travel,Normal University of Qufu,Rizhao 276800,Shandong,China)

机构地区：[1]自然资源部金矿成矿过程与资源利用重点实验室,山东济南250013 [2]沂蒙山国家地质公园管理局,山东临沂273304 [3]平邑县自然资源与规划局,山东临沂273304 [4]山东指南针矿产勘查有限公司,山东临沂276006 [5]曲阜师范大学地理与旅游学院,山东日照276800

出　　处：《华东地质》2021年第3期279-285,共7页East China Geology

基　　金：自然资源部金矿成矿过程与资源利用重点实验室“山东金刚石成矿规律与侵位时代研究(编号:201403)”;山东指南针矿产勘查有限公司“东亚冷槽探索计划(编号:20180101)”项目联合资助。

摘　　要：我国东部中低山区是否存在第四纪冰川作用一直存在争论。冰川作用使山体遗留冰蚀遗迹,通过研究冰蚀遗迹可进一步分析山体地貌的演化过程,辨识是否存在冰川作用。利用卫星遥感技术大视域俯视观察山体地貌,可突破地面视野对山体地貌观察的局限性,为冰蚀地貌结构研究提供技术支撑。喜马拉雅山广泛发育现代冰川,冰蚀地貌清晰且典型。通过研究喜马拉雅山脉冰蚀地貌结构,发现了冰蚀三角脊链,揭示了山体冰斗集群发育过程及规律。根据冰斗系统剥蚀推进方向,分辨出对蚀三角脊链、斜蚀三角脊链与追蚀三角脊链3种基本组合形态。冰蚀三角脊链是冰蚀作用的结构性遗迹,我国东部中低山区广泛发育冰蚀三角脊链,进一步佐证我国东部地区曾广泛发育第四纪冰川。Whether Quaternary glaciation exists in the middle and low mountains of eastern China has been debated for a century.Because glacial landforms are formed by glaciation,further studying on the mountain glacial erosion relics and analyzing on the evolution of geomorphology are significant to identify the existence of glaciation.The satellite remote sensing with a large overlook view breaks the limitation of observation the mountain geomorphology from the ground in the past,and provides the condition to study the structure of glacial erosion geomorphology.Modern glaciers are widespread in the Himalayas with the clear and typical glacial erosion landforms that provide a basis for us to study the ice cirque system.Meanwhile,according to the erosion direction of ice cirque,we distinguish three fundamental combinations such as the symmetrical erosion triangle ridge chains,oblique erosion triangle ridge chains and following erosion triangle ridge chains.Glacial erosion triangle chains are the structural relics of glaciation.Comparative analysis of the mountain landforms in the middle and low mountains of eastern China using the triangle ridge theory,we found glacial erosion triangle ridge chains are widespread in that areas,which proves Quaternary glaciation existing in the eastern China.

关 键 词：冰斗 冰蚀地貌 三角脊链 地貌过程 遥感技术 

分 类 号：P343.6[天文地球—水文科学]