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| Paleomagnetic dating of the Cenjiawan Paleolithic site in the Nihewan Basin, northern China | |
| 摘 要： | It draws much attention of scientists how early hu- mans occupy and adapt to the rigorous climate and environment at high northern latitudes in East Asia after they stepped out of Africa, passed West Asia and finally arrived in East Asia1-4]. Reliable age determi- nations of Paleolithic sites from northeastern Asia not only help to find out the earliest occupation of early humans in this region, but also relate to the founda- tion of the overall framework of human origin and migration1-8]… |
| 收稿时间： | 22 March 2005 |
| 修稿时间： | 28 September 2005 |
Paleomagnetic dating of the Cenjiawan Paleolithic site in the Nihewan Basin, northern China |
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| Authors: | WANG Hongqiang DENG Chenglong ZHU Rixiang XIE Fei |
| Institution: | 1. Paleomagnetism and Geochronology Laboratory (SKL-LE), Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China;School of the Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China 2. Paleomagnetism and Geochronology Laboratory (SKL-LE), Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China 3. Hebei Province Institute of Cultural Relics, Shijiazhuang 050000, China |
| Abstract: | Rock magnetic and magnetostratigraphic investigations on a lacustrine sequence in the Nihewan Basin, northern China, which bears the Cenjiawan Paleolithic site, indicate that the dominant magnetic mineral and remanence carrier contained in the sediments is magnetite. While hematite co-exists with magnetite in some portions of the Cenjiawan sequence, where characteristic remanent magnetizations are carried by both magnetite and hematite. Measurements of anisotropy of magnetic susceptibility confirm that the Cenjiawan sequence has preserved the original sedimentary features and is suitable for magnetostratigraphic study. Paleomagnetic results indicate that the Cenjiawan Paleolithic site is formed just posterior to the Punaruu normal event, which is dated at about 1.1 Ma. Combined with the paleomagnetic results of the Donggutuo, Xiaochangliang and Majuangou sections, it is concluded that early humans were occupying the Nihewan Basin around 1.6, 1.3 and 1.1 Ma. This integrated result is significant to understanding the ability of migration and adaptation to the envi- ronment of early humans. |
| Keywords: | Nihewan Basin Early Pleistocene Cenjiawan Paleolithic site paleomagnetism |
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