中国北方第四纪磁性地层记录的古地磁极倒转与气候变化耦合关系  

Coupling of paleomagnetic polarity reverse with climatic change recoded by magnetostratigraphy in Northern China during Quaternary

作　　者：郑国璋[1] 岳乐平[1] 

机构地区：[1]西北大学地质学系

出　　处：《地球科学与环境学报》2005年第3期91-94,共4页Journal of Earth Sciences and Environment

基　　金：国家重点基础发展研究计划项目(973计划)(2003CB214607)

摘　　要：应用古地磁学原理,分析了中国北方第四纪黄土、泥河湾盆地、黄海陆架磁性地层记录的古地磁极倒转与气候变化之间的关系。研究表明第四纪古地磁极倒转与气候变化有一定的耦合关系:Matuyama/Gauss极性界限、Brunhes/Matuyama极性界限与第四纪气候变冷期相对应,Matuyama负极性时中的正极性亚时及Brunhes正极性时中的负极性亚时与气候变暖期相一致。因而,第四纪古地磁极倒转可能是第四纪气候冷暖波动变化的主要驱动因素之一。This paper analyzed the relationship between paleomagnetic polarity reverse and climatic change recoded by magnetostratigraphy of loess, Nihewan Basin and Yellow Sea shelf in Northern China during Quaternary by paleomagnetism. The sdudy indicate that the coupling exists in between paleomagnetic polarity reverse and climatic change during Quaternary： Matuyama/Gauss polarity transition and Brunhes/Matuyama polarity transition correspond with climatic chill period during Quaternary. Normal polarity subchron of Matuyama reverse polarity chron and reverse polarity subchron of Brunhes normal polarity chron correspond with climatic warm period. Therefore, paleomagnetic polarity reverse of Quaternary may be one of the main driving factors.

关 键 词：第四纪 磁性地层 古地磁极倒转 气候变化 中国北部 

分 类 号：P534.63[天文地球—第四纪地质学] P318.44[天文地球—古生物学与地层学]