| 黑龙江省那丹哈达与日本美浓地区古地磁结果对比及意义 |
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| 引用本文： | 李朋武,张世红,申宁华.黑龙江省那丹哈达与日本美浓地区古地磁结果对比及意义[J].吉林大学学报(地球科学版),1997(1). |
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| 作者姓名： | 李朋武 张世红 申宁华 |
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| 作者单位： | 长春地质学院地球物理系，中国地质大学地质矿产系 |
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| 摘 要： | 在那丹哈达地区采集了中三叠世红色硅质岩样品，古地磁分析测试结果表明，该岩样的磁性特征与日本西南美浓地区同时代硅质岩具有相似性，反映了二者是同源同构造环境下的产物。依据沉积地层组合和古地磁数据，那丹哈达和日本美浓地区原为同一地体，而且三叠纪以来均存在大规模北向位移。同时，古地磁数据还表明了日本海是约在８０Ｍａ，相当于晚白垩世开始扩张的，致使那丹哈达与日本美浓两地体相互分离
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| 关 键 词： | 那丹哈达 日本美浓 硅质岩 古地磁 |
THE CONTRAST OF PALEOMAGNETIC RESULTS BETWEEN NADANHADA AREA, HILONGJIANG PROVINCE AND MINO AREA,JAPAN,AND ITS SIGNIFICANCE |
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| Li Pengwu,Zhang Shihong,Shen Ninghua.THE CONTRAST OF PALEOMAGNETIC RESULTS BETWEEN NADANHADA AREA, HILONGJIANG PROVINCE AND MINO AREA,JAPAN,AND ITS SIGNIFICANCE[J].Journal of Jilin Unviersity:Earth Science Edition,1997(1). |
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| Authors: | Li Pengwu Zhang Shihong Shen Ninghua |
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| Institution: | Li Pengwu 1) Zhang Shihong 2) Shen Ninghua 1) |
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| Abstract: | Siliceous rock samples from a middle Triassic sequence in the Nadanhada area, northeast China, have a multicomponent magnetization. This feature is familar to that red cherts from middle Triassic sequence in the Inuyama area, central Japan. This reflects that rocks from middle Triassic in two area is a product under the same origin and the same tectonic circumstances. According to stratigraphic and paleontologic combination and paleomagnetic data, Nadanhada and Mino terrane originally is a common terrane, and have a large-scale movement northward since middle Triassic. Paleomagnetic data indicates that the time Japan sea began to open is about 80 Ma. It made Mino and Nadanhada separate. |
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| Keywords: | Nadanhada Mino of Japan siliceous rock paleomagnetism |
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