Cobb Mountain极性事件在黄土中的记录

被引:6
作者
郭斌
朱日祥
岳乐平
吴汉宁
机构
[1] 中国科学院地球物理研究所!北京,中国科学院地球物理研究所!北京,西北大学地质系!西安,西北大学地质系!西安
关键词
CobbMountain极性事件; 黄土; 渭南;
D O I
暂无
中图分类号
P318 [地磁学];
学科分类号
070801 ;
摘要
对渭南黄土剖面L1 0至S1 3进行了详细的岩石磁学和古地磁学研究 ,获得了CobbMountain极性事件转换过程中地球磁场变化特征 .结果表明 :(ⅰ )CobbMountain极性事件与地球磁场方向变化相联系的持续时间约 2 2ka ;(ⅱ )从统计意义上讲 ,VGPs主要沿两个经度带移动 ;(ⅲ )CobbMountain极性事件期间地球磁场强度明显减弱
引用
收藏
页码:327 / 333
页数:7
相关论文
共 24 条
[1]  
Revised calibration of the geomagnetic polarity time scale for the last Cretaceous and Cenozoic. Cande S C,Kent D V. Journal of Geophysical Research . 1995
[2]  
Towards an orbital time scale for Chinese loess deposits. Ding Z L,Yu Z W,Rutter N W,et al. Quaternary Science Reviews . 1994
[3]  
Age and paleoclimatic significance of the loess of Lanzhou, north China. Burbank D W,Li J J. Nature . 1985
[4]  
A preliminarystudyonmagnetostratigraphyofaloessprofileinXifengarea ,GansuProvince. LiuXM,LiuTS,XuTC,etal. . 1987
[5]  
Magnetostratigraphical dating of loess deposits in China. Heller F,Liu T S. Nature . 1982
[6]  
Magnetostratigraphic dating of river terraces: rapid and intermittent incision by the Yellow River of the northern margin of the Tibetan Plateau during the Quaternary. Li J J,Fang X M,Van der Voo R,et al. Journal of Geophysical Research . 1997
[7]  
Evidence for dipolar fields during the Cobb Mountain geomagnetic polarity reversals. Clement B M. Nature . 1992
[8]  
Short polarity intervals within the Matuyama: transitional field records from hydraulic piston cored sediments from the North Atlantic. Clement B M,Kent D V. Earth and Planetary Science . 1987
[9]  
Records of geomagnetic reversals from volcanic islands of French Polynesia 2.Paleomagnetic study of a flow sequence (12~06 Ma) from the island of Tahiti and discussion of reversal models. Chauvin A,Roperch P. Journal of Geophysical Research . 1990
[10]  
Paleomagnetic data from the Coso Range, California & the current status of the Cobb Mountain normal Geomagnetic event. Mankinen E A,Gromme C S. Geophysical Research Letters . 1982