The reconstruction of palaeoenvironment during development of thefourth palaeosol in the southern Loess Plateau of China
文献类型：期刊论文
| 作者 | Yue,YL(Yue,Yingli)[1]; Liu,R(Liu,Rui)[1]; Liu,XM(Liu,Xiuming)[3]; Ma,YD(Ma,Yandong)[1]; Luo,XQ(Luo,Xiaoqing)[1]; Zhao,JB[1,2] |
| 刊名 | Catena
 |
| 出版日期 | 2015 |
| 卷号 | 132期号:2015页码:21-28 |
| 关键词 | Chinese loess Pedocomplex Palaeoclimate Summer monsoon Soil moisture Change of climatic boundary |
| DOI | 10.1016/j.catena.2015.04.007 |
| 文献子类 | 期刊论文 |
| 英文摘要 | The fourth palaeosol (S4) of the Brunhes Epoch (780,000–0 years B.P.) at Shuangzhu, Tianjiapo, and Hejiacun in the Guanzhong Plain developed over about 40 ka and varies in thickness from 3.6 to 4.0 m. It consists of four horizons: the first (uppermost) is a well developed red–brown clay horizon (Bts), the second is a dark yellowish-brown weathering-cracked loess horizon (Cs) with red ferruginous argillans, the third is a yellowish-brown weathering-cracked loess horizon (Cl) without red ferruginous argillans, and the fourth consists of CaCO3 nodules (Ck). The two weathering-cracked loess horizons, which are a major feature differentiating a pedocomplex from a palaeosol, have not been found previously in Chinese palaeosol. The ferruginous clay argillans are composed of montmorillonite–illite with some kaolinite minerals. The pedocomplex suggests that a moist subtropical climate prevailed between 420,000 and 360,000 years in the southern parts of the Chinese Loess Plateau. Its profile is Bts–Cs–Cl–Ck–Co. When the pedocomplex was developed, the mean annual temperature and precipitation were about 16 °C and 1000 mm respectively, about 3 °C higher and 400 mm more than at present in the Guanzhong Plain. The removal depth of CaCO3 and the weathering-cracked loess layer indicate that the gravitational water reached a depth of at least 3.2 m, and the moisture content in S4 would have been sufficient to sustain forest development at that time. In the typical interglacial in which S4 was developed, the Qinling Mountains lost their function as the boundary between the subtropical and temperate zones of China, and water-bearing air masses resulting in rich rainfall could frequently reach the southern Loess Plateau. |
| 语种 | 英语 |
| 源URL | [http://ir.ieecas.cn/handle/361006/9631]  |
| 专题 | 地球环境研究所_黄土与第四纪地质国家重点实验室（2010~） |
| 作者单位 | 1.College of Geographical Sciences, Fujian Normal University, Fuzhou, China 2.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS, Xi'an, China; 3.College of Tourism and Environment Science, Shaanxi Normal University, Xi'an, China; |
| 推荐引用方式 GB/T 7714 | Yue,YL,Liu,R,Liu,XM,et al. The reconstruction of palaeoenvironment during development of thefourth palaeosol in the southern Loess Plateau of China[J]. Catena,2015,132(2015):21-28. |
| APA | Yue,YL,Liu,R,Liu,XM,Ma,YD,Luo,XQ,&Zhao,JB[1,2].(2015).The reconstruction of palaeoenvironment during development of thefourth palaeosol in the southern Loess Plateau of China.Catena,132(2015),21-28. |
| MLA | Yue,YL,et al."The reconstruction of palaeoenvironment during development of thefourth palaeosol in the southern Loess Plateau of China".Catena 132.2015(2015):21-28. |
入库方式： OAI收割
来源：地球环境研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。