北江下游现代沉积中重矿物变化特征与动力环境的关系  

ON THE RELATIONSHIP BETWEEN CHANGING CHARACTERISTICS OF HEAVY MINERALS AND HYDRAULIC ENVIRONMENT IN THE LOWER REACHES OF THE BEIJIANG RIVER

作　　者：陈耀泰 

机构地区：[1]中山大学地理系

出　　处：《热带地理》1989年第4期314-321,共8页Tropical Geography

摘　　要：北江下游业经鉴定的重矿物共有27种(类)。其中主要组分的稳定矿物在全河段中基本一致,含量变化不大,构成了重矿物的基本组合。从上段到下段,它们在特定动力条件作用下,按比重及形态分异的结果,形成了各具特色的、分别反映出不同的沉积环境和动力特征的4个重矿物组合类型。There are twenty seven kinds of heavy minerals identified in the low reaches of the Beijiang River. The main proportion of stable heavy minerals which constitute fundamental combinations can not show the significant vareations along the river. Ranging from up to down, four heavy-mineral combinations have been formed under certain hydrodynamic conditions and separated by specific gravity and shape, each of which reflects different sedimentation environments and hydrodynamic characteritics.

关 键 词：北江 现代沉积 重矿物 动力环境 

分 类 号：P512.2[天文地球—地质学]