| 新生代古海洋Nd同位素演化及其古环境意义 |
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| 引用本文： | 凌洪飞,周怀阳,等.新生代古海洋Nd同位素演化及其古环境意义[J].地质论评,2001,47(3):287-293. |
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| 作者姓名： | 凌洪飞 周怀阳 |
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| 作者单位： | 1. 南京大学内生金属矿床成矿机制研究国家重点实验室,南京大学地球科学系,210093
2. 国家海洋局第二海洋研究所,杭州,310012 |
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| 基金项目： | 国家自然科学基金(编号49873003) |
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| 摘 要： | 本文对当前在新生代古海洋Nd同位素演化及其古环境意义研究方面的最新成果进行了简明的阐述，说明在巴拿马海峡于5－3Ma关闭前后，太平洋和大西洋洋流的变化与其海水Nd同位素的变化相对应。但同期的印度洋Nd同位素没有明显变化，其原因需要进一步研究。
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| 关 键 词： | 演化 古海洋 新生代 钕同位素 古环境 |
Evolution of Oceanic Nd Isotopic Composition in the Cenozoic and Its Environmental Significance |
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| LING Hongfei,JIANG Shaoyong,Ni Pei,ZHANG ZhiYuan,ZHOU Huaiyang State Key Laboratory for Mineral Deposits Research and.Evolution of Oceanic Nd Isotopic Composition in the Cenozoic and Its Environmental Significance[J].Geological Review,2001,47(3):287-293. |
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| Authors: | LING Hongfei JIANG Shaoyong Ni Pei ZHANG ZhiYuan ZHOU Huaiyang State Key Laboratory for Mineral Deposits Research and |
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| Institution: | LING Hongfei,JIANG Shaoyong,Ni Pei,ZHANG ZhiYuan,ZHOU Huaiyang State Key Laboratory for Mineral Deposits Research and Department of Earth Sciences,Nanjing University,Nanjing,Second Institute of Oceanography,State Oceanic Administration,Hangzhou |
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| Abstract: | Recent achievements in obtaining information of the evolution of oceanic Nd isotopic composition in the Cenozoic and its environmental significance are summarized. Variations in the circulation between the Pacific and Atlantic and in Nd isotopic composition corresponded to the closing of the Panama seaway 5 - 3 Ma ago. However, the cause for the little variation in Nd isotopic compositon in the Indian Ocean in the same period is not clear and needs further work to reveal. |
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| Keywords: | evolution Nd isotopic composition paleoceanography enozoic |
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