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晚更新世末期的地磁短期反极性事件,是由邦赫梅特(N.Bonhommet)和巴肯(J.Babkine)于法国拉斯钱普山(Puy de Laschamp)首先发现的。近十几年来,各国的某些古地磁研究者先后发表了数十篇论文对该事件的时代进行过讨论,但到目前为止,尚无较为一致的意见。根据已发表的年代资料,大体可将其归纳为两种意见:一是以莫尔尼(N.Morner)为代表,根据瑞典京城哥德堡公园的研究资料,认为该短期漂移时间应在距今13750—12350年范围内,并将其称为哥德堡事件(Gothenburg reversal);二是以威苏帕(K.L.Verosub)为代表,认为在距今21000—36000年间并不存在反向时期。而全球性的倒转时间应在距今35000—40000年间的某一时期。 根据我们对黄海,东海近岸带沉积岩芯的古地磁研究,认为晚更新世的地磁短期反极性事件,可能由两个事件组成。本文根据对沉积岩芯的系统测量、结合C~(14)测年和微
Short-term reverse polarity events in the late Pleistocene were first discovered by N. Buthommet and J. Babakine in Puy de Laschamp, France. In the past ten years, some paleomagnetic researchers in various countries have published dozens of essays to discuss the era of the incident, but so far there is no consensus. According to the published chronology, it can be generalized into two opinions: one is represented by N. Morner. According to the research data of Gothenburg Park in the capital of Sweden, the short-term drift time should be 13750 - In the range of 12350, it is called the Gothenburg reversal. The second is represented by KLVerosub. There is no reverse period between 21000 and 36000 years ago. The global reversal time should be 35,000 to 40,000 years ago, a period of time. According to our paleomagnetic study on the sedimentary core of the Yellow Sea and the East China Sea, it is believed that the late Pleistocene geomagnetic short-term reverse polarity event may be composed of two events. This article is based on systematic measurements of sedimentary cores combined with C ~ (14) dating and micro