再论山脊壶穴的冰川融水成因——兼与施雅风院士商榷  

On the Meltwater Origin of Potholes Found on Granite Ridges——A Consultation with Academician SHI Yafeng

作　　者：吕洪波[1] 任晓辉[2] 许民[2] 欧阳江城[2] 

机构地区：[1]中国石油大学地球科学系,山东青岛266555 [2]赤峰学院环境与资源系,内蒙古赤峰024000

出　　处：《地质论评》2010年第5期693-702,共10页Geological Review

基　　金：山东省自然科学基金资助课题"中国东部第四纪冰川地貌研究"(编号Y2008E20)的成果

摘　　要：针对施雅风院士新提出的壶穴之"负球状风化"说,笔者特撰文与施老商榷。笔者认为:壶穴的形成并不受花岗岩中节理的控制,也与风化作用无关,不能用"负球状风化"来解释。壶穴是高速旋转水流侵蚀的结果,在中国东部花岗岩山脊上发现的壶穴是第四纪冰川融水侵蚀的标志。近年来观察到的格陵兰冰上湖泊的突然排泄为壶穴的冰川融水成因说提供了重要的证据。壶穴成因争论的本质是中国东部是否曾经发育过第四纪冰川,建议第四纪学界关注中国东部第四纪冰川的其他地貌标志。韩同林研究员的"冰臼论"促进了中国东部第四纪冰川地貌的再研究,应当给予积极评价。After reading the newly published article,entitled Comments on the Moulin Argument provided by Mr. HAN Tonglin,a Misunderstanding of Granite Negative Spheroidal Weathering （by Academician SHI Yafeng）,the author of this paper collected a lot of materials and references to discuss the origin of potholes with Academician SHI Yafeng. The author disagree with Academician SHI Yafeng on the origin of potholes. Potholes are formed without being controlled by the joints in granites and without the participation of weathering,and thus,can not be interpreted with the so-called ＂negative spheroidal weathering＂. Potholes can only be formed under the erosion of fast whirling water,and so the ones found on the granite ridges in the east of China can be treated as the meltwater erosion indicators of Quaternary glaciation. Recent observation on the abrupt draining of meltwater from the supraglacial lakes in Greenland provides important evidence for the meltwater origin of potholes. The arguments on the origin of potholes in China reveal the discordance of researchers on the development of Quaternary glaciation in the east of China. Apart from potholes,the Chinese researchers should pay more attention to other landform records related to Quaternary glaciation in the east of China. The so-called ＂Moulin Argument＂ ,proposed by Professor HAN Tonglin,has improved the research on the landforms of Quaternary glaciation in the east of China.

关 键 词：壶穴 负球状风化 冰川融水 中国东部 第四纪冰川 

分 类 号：P343.6[天文地球—水文科学]