Paleomagnetic dating of the Cenjiawan Paleolithic site in the Nihewan Basin, northern China  

作　　者：WANG Hongqiang1,2, DENG Chenglong1, ZHU Rixiang1 & XIE Fei3 1. Paleomagnetism and Geochronology Laboratory (SKL-LE), Institute of Geology and Geophysics, Chinese Academy of Sci- ences, Beijing 100029, China 2. School of the Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China 3. Hebei Province Institute of Cultural Relics, Shijiazhuang 050000, China 

出　　处：《Science China Earth Sciences》2006年第3期295-303,共9页中国科学（地球科学英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.20414930 and 40221402).

摘　　要：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.Rock magnetic and magnetostratigraphic investigations on a lacustrinesequence in the Nihewan Basin, northern China, which bears the Cenjiawan Paleolithic site, indicatethat 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, wherecharacteristic remanent magnetizations are carried by both magnetite and hematite. Measurements ofanisotropy of magnetic susceptibility confirm that the Cenjiawan sequence has preserved the originalsedimentary features and is suitable for magnetostratigraphic study. Paleomagnetic results indicatethat the Cenjiawan Paleolithic site is formed just posterior to the Punaruu normal event, which isdated at about 1.1 Ma. Combined with the paleomagnetic results of the Donggutuo, Xiaochangliang andMajuangou sections, it is concluded that early humans were occupying the Nihewan Basin around1.6,1.3 and 1.1 Ma. This integrated result is significant to understanding the ability of migrationand adaptation to the environment of early humans.

关 键 词：Nihewan Basin  Early Pleistocene  Cenjiawan  PALEOLITHIC site  paleomagnetism. 

分 类 号：P597.3[天文地球—地球化学]