四川康定折多山末次冰盛期古冰川重建及其气候意义

杨舒然, 杨玮琳, 韩业松, 杨彦敏, 李梦真, 崔之久, 刘耕年

Reconstruction of glacial extent of the Zheduoshan Mountains， eastern Qinghai-Tibet Plateau and its climatic implications

Shuran YANG, Weilin YANG, Yesong HAN, Yanmin YANG, Mengzhen LI, Zhijiu CUI, Gengnian LIU

图2 研究区冰川地貌遗迹（位置见图4） 注：（a）江巴沟，角峰、冰斗、槽谷、冰碛垄；（b）康定机场北侧洛基普，终碛垄及终碛垄上的大漂砾；（c）康定机场西侧，终碛垄和冰碛丘陵，没有尖锐的角峰、没有下切的槽谷，小于20°的基岩山坡保留有冰蚀面、羊背石，以及散落的漂砾；（d）洛机普的冰碛垄的剖面，其中有大小不一的角砾石，棱角清晰分选度差，排布无规律，显示典型冰下融出碛特征

Fig.2 Glacial landforms and deposit in the Zheduoshan Mountains （locations see Fig. 4） （a）Horn peaks，cirques，trough valleys and moraine ridges in Jiangbagou；（b）Terminal moraine ridges of Luojipu， located at the north side of Kangding Airport，dotted with large boulders；（c）On the west side of Kangding Airport，there are terminal moraine ridges and moraine hills，with no sharp horn peaks or cut troughs，and ice erosion surfaces，roche moutonnée and scattered boulders lie on bedrock slopes gentler than 20°；（d）Glacial deposit profile at Luojipu，in which there are different sizes of angular gravels，poor sorting and irregular arrangement，showing typical characteristics of subglacial melt-out deposits