摘要
本文以郑州邙山赵下峪剖面为例，研究了黄土－古土壤序列的容重及其与磁化率、粒度的关系。结果表明，容重与磁化率反映的夏季风变化有显著的正相关关系，与粗颗粒含量反映的冬季风变化有显著的负相关关系；而天然压实作用对Ｓ１０以上黄土与古土壤容重的贡献可以忽略不计。所以，风成沉积的容重指标综合反映了冬季风与夏季风气候组合关系的变化。
Taking Zhaoxiayu section,Mangshan,Zhengzhou as an example,this paper has studied the volumetric weight of loess palaeosol sequences and its relation with susceptibility as well as its grain size .It is shown that volumetric weight bears an evident positive correlation to the summer monsoon variations indicated by the susceptibility,an evident inverse correlation to the winter monsoon variations indicated by the content of coarse fraction,and the natural compaction contributes very little to volumetric weight of loess palaeosol sequences above S 10 .Volumetric weight can thus be regarded as an indicator to the variations of the combination of winter monsoon and summer monsoon.
出处
《地质力学学报》
CSCD
1998年第4期42-45,共4页
Journal of Geomechanics
基金
国家自然科学基金
关键词
黄土
古土壤
容重
季风
气候变化
古气候
loess palaeosol sequence
volumetric weight
monsoon climate variation
