内蒙古巴林左旗岩臼型花岗岩景观形成演化分析  

Analysis on the formation and evolution of granite mortars in Bairin Left Banner in Inner Mongolia

作　　者：周旭[1] 田明中[1] 王璐琳[1] 

机构地区：[1]中国地质大学(北京)地球科学与资源学院,北京100083

出　　处：《干旱区资源与环境》2014年第12期166-171,共6页Journal of Arid Land Resources and Environment

摘　　要：岩臼是一类极具特色的小型花岗岩地貌景观。近年来,华北和华南部分地区花岗岩岩臼的发现与成因探讨一直是国内地学界关注的热点,而关于其冰川成因和风化成因的争论更是引起地学界对我国东部第四纪冰川环境问题的再次讨论。内蒙古巴林左旗一些相对平坦的山顶上,广泛发育着花岗岩岩臼,文中在对其空间分布和形态特征进行调查的基础上,从岩性、构造和外部环境的角度,对其形成演化进行了探讨。结果表明:"冰臼"成因说和"壶穴"成因说并不科学,以寒冻风化为先导的多种风化作用才是岩臼形成的主要成因。Mortar is a kind of distinctive miniature granite landscape. In recent years,the discovery and discussion on the origin of granite mortars in parts of north and south China have been a hot topic in the domestic geomorphological field,the debate about whether they are ＂ Moulin＂ or ＂ Pothole＂ caused the geologists＇ discussion on the quaternary glacial environmental problems in eastern china. Granite mortars are widely distributed on some relatively flat peak in Bairin Left Banner,Inner Mongolia. Based on the investigation of the the spatial distribution and morphological characteristics,we discussed its formation and evolution from the angle of the lithology,structure and the external environment. The results show that statements about moulin and pothole are not scientific,the main causes of the mortars were various weathering which gave priority to frost weathering.

关 键 词：岩臼型花岗岩景观 形成演化 巴林左旗 

分 类 号：P931.5[天文地球—自然地理学]