摘要
以北京西山潭柘寺地区第四纪冰川遗迹的宏观特征研究为基础，对管坨岭冰期和赵家台冰期的古冰川沉积进行了石英颗粒表面结构形貌组合特征的分析。结果表明，管坨岭冰期的管坨岭冰碛层和大富庄冰碛层，以及赵家台冰期的太平庄冰碛层中的石英颗粒表面结构，以冰川成因的形貌组合占优势，而赵家台冰期鲁家滩冰水沉积中的石英颗粒表面结构，则以冰川和流水共有成因的形貌占优势。所以，据冰川遗迹的宏观和微观特征。
,After a study of macroscopic features for the Quaternary glacial vestiges in the Tanzhesi area of the Western Hills of Beijing,the analysis of the appearances and assemblage features of quartz grain surface textures has been carried out for the palaeoglacial deposits of the Guantuoling and Zhaojiatai glaciations.The surface textures of quartz grains indicate a dominance of the appearance assemblage of glacial origin in the Guantuoling till and Dafuzhuang till of the Guantuoling glacial stage as well as in the Tainpingzhuang till of the Zhaojiatai glaciation,and glaciofluvial origin for the Lujiatan deposit of Zhaojiatai glaciation.Therefore,based on the macroscopic and micrioscopic features of the palaeoglacial vestiges in this area,it is certain that two palaeoglaciations had developed in the Early and Middle Pleistocene respectively.
出处
《地质力学学报》
CSCD
1997年第4期3-12,共10页
Journal of Geomechanics
基金
地质矿产部"九五"重点基础项目
关键词
第四纪
冰川
冰川沉积
石英颗粒
表面结构
,Quaternary glacier,glacial deposit,quartz grain,surface texture,Western Hills of Beijing
