Rock magnetic studies on the hominoid-bearing sediments at Zhupeng, Yuanmou Basin, southwestern China and its paleoclimatic significance
文献类型：期刊论文
| 作者 | Yao, HT; Liu, QS; Lu, LQ; Chang, ZG; Zhu, RX |
| 刊名 | CHINESE SCIENCE BULLETIN
 |
| 出版日期 | 2005-08-01 |
| 卷号 | 50期号:15页码:1653-1660 |
| 关键词 | Yuanmou Basin Hominoid Late Miocene Rock Magnetism Paleoclimate |
| ISSN号 | 1001-6538 |
| DOI | 10.1360/04w0380 |
| 文献子类 | Article |
| 英文摘要 | It has been proposed that paleoclimatic changes and tectonic events strongly affect hominoid evolution. The Zhupeng section at Yuanmou Basin, southwestern China, with the hominoid-bearing fluvial-lacustrine sediments, is an ideal natural laboratory to test this hypothesis. This study provided an integrated magnetic study, including low-frequency susceptibility, the anisotropy of magnetic susceptibility, temperature-dependent susceptibility, hysteresis loops, isothermal remanent magnetization, and anhysteretic remanent magnetization, on samples from the Baozidongqing section at Zhupeng. Results show that the dominant magnetic carrier is hematite, with minor amount of magnetite. Both the composition and concentration of magnetic minerals strongly correlate with the lithostratigraphy. At least eight short-term events defined by higher concentrations of magnetite were identified. These short events reflect that the subtropical dry-hot climate is similar to today's climate. Basing on the lithostratigraphic and rock magnetic results, we suggest that Yuanmou Basin was in a steady deposition environment from about 11 to 7 Ma, which is characterized by alternating of long-term torrid-humid climate and short-term dry-hot climate. Our study provides invaluable environment information for understanding the climate shift and the relationship between paleoenvironment and hominoid evolution in southwestern China during late Miocene. |
| WOS关键词 | RED BEDS ; MYR AGO ; HEMATITE ; DEPOSITS ; PROVINCE ; PLATEAU ; MIOCENE ; CLIMATE ; MONSOON ; YUNNAN |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000232609500020 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/65412]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Yao, HT |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Paleomagnetism Lab, Beijing 100029, Peoples R China 2.Univ Calif Santa Cruz, Inst Geophys & Planetary Geophys, Santa Cruz, CA 95064 USA |
| 推荐引用方式 GB/T 7714 | Yao, HT,Liu, QS,Lu, LQ,et al. Rock magnetic studies on the hominoid-bearing sediments at Zhupeng, Yuanmou Basin, southwestern China and its paleoclimatic significance[J]. CHINESE SCIENCE BULLETIN,2005,50(15):1653-1660. |
| APA | Yao, HT,Liu, QS,Lu, LQ,Chang, ZG,&Zhu, RX.(2005).Rock magnetic studies on the hominoid-bearing sediments at Zhupeng, Yuanmou Basin, southwestern China and its paleoclimatic significance.CHINESE SCIENCE BULLETIN,50(15),1653-1660. |
| MLA | Yao, HT,et al."Rock magnetic studies on the hominoid-bearing sediments at Zhupeng, Yuanmou Basin, southwestern China and its paleoclimatic significance".CHINESE SCIENCE BULLETIN 50.15(2005):1653-1660. |
入库方式： OAI收割
来源：地质与地球物理研究所
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