Characteristics of Loess-Paleosols Volumetric Weight in the Eastern and Western Liupanshan Mountains and Its Paleoclimate Significance
详细信息
- 责任者：Jin Chunsheng (Institute of Geology and Geophysics ; Chinese Academy of Sciences ; Beijing 100029 ; China) ; Huang Xiaogang
- 刊名：Acta Geologica Sinica
- 出版年：2008
- 卷期：82(5)
- 关键词：古土壤 ; paleosols ; 古气候 ; 六盘山 ; Liupan Mountains
- 页码：p.702-709
- 图表：35 illus., 2 tables, 48 refs.
- 分类号：1400
- issnNo：ISSN0001-5717
- isbnNo：CN11-1951/P
摘要
To further understand the relations between volumetric weight and the East-Asian monsoon evolution, the authors established volumetric weight sequences of loess-paleosols at the Luochuan section since 250 ka BP and Baicaoyuan section since 140 ka BP, respectively. Comparison between volumetric weight, magnetic susceptibility, particle size and deep-sea oxygen isotope show that loess-paleosols volumetric weight in different climate regions east and west of the Liupanshan indicates different paleoclimate significance mainly controlled by different climate factors. Compared with sections in Baicaoyuan, Luochuan, Lingtai and Sanmenxia, volumetric weight values increase spatially from northwest to southeast in China, further indicating different influences of summer and winter monsoon on volumetric weight values of different climate region