摘要
扫描电镜下对宣城剖面１６７个石英颗粒的表面特征进行了详细的观察．剖面中石英颗粒的磨园度、球度较高，表明沉积物在地质营力的主导下经过了较长距离的搬运，在ＥＳＲ年代学研究中可以认定其初始剂量为零；相比于棕黄色古土壤母质层，古土壤层中的石英颗粒表面化学结构极为发育，指示了古土壤形成期的气候相对温湿．
This paper addresses on the surface characteristics of the quartz particles in the profile of quaternary red earth,Xuancheng,Anhui province.The results show that both of the psephicity and the sphericity are quite well,which implies that the quartz particles were transported in a long distance.So we can conclude that preliminary dose of the quartz crystal were equal to zero.It provide a theoretical base to the application of the ESR method in this profile.Compared with the quartz in the loess,it is developing chemical texture commonly in the paleosol.It implies that paleoclimate was warmer and wetter during the periods of paleosol forming.
出处
《南京师大学报（自然科学版）》
CAS
CSCD
1998年第1期120-124,共5页
Journal of Nanjing Normal University(Natural Science Edition)
