山东章丘黄土粒度指示的粉尘堆积过程及古气候意义

孔凡彪, 陈海涛, 徐树建, 苗晓东

Dust accumulation processes and palaeoenvironmental significance of loess indicated by grain size in Zhangqiu, Shandong Province

KONG Fanbiao, CHEN Haitao, XU Shujian, MIAO Xiaodong

表2 章丘剖面各端元参数特征

Tab. 2 Parameter characteristics of end members in the Zhangqiu section

剖面 平均粒径(Mz/um) 分选系数 偏度(Sk) 峰度(Kg) 粘土(%) 粉砂(%) 砂(%) EM1 1.06 1.66 0.64 3.25 98.93 1.07 0.00 EM2 6.01 2.08 0.24 2.76 32.38 67.53 0.08 EM3 12.66 2.04 -0.27 2.89 6.89 92.71 0.40 EM4 29.84 1.67 -0.52 3.29 0.06 95.95 3.99 EM5 56.20 1.44 -0.73 3.82 0.00 63.86 36.14