| 中国东部中生代岩浆作用与岩石圈减薄 |
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| 引用本文： | 吴福元,孙德有. 中国东部中生代岩浆作用与岩石圈减薄[J]. 吉林大学学报(地球科学版), 1999, 0(4) |
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| 作者姓名： | 吴福元 孙德有 |
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| 作者单位： | 长春科技大学地球科学学院!长春130061 |
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| 摘 要： | 对中国东部新生代玄武岩及其包体的Ｓｒ Ｎｄ 同位素资料的总结表明，中国东部现今岩石圈地幔具有强烈亏损性质，现今岩石圈地幔是新生的。岩石圈减薄主要发生在中生代晚期，并与中国东部大面积、强烈的中生代岩浆活动在时间上相对应，且具有自西向东岩石圈减薄逐渐增强的趋势。分析表明，中生代期间印度洋型软流圈地幔的侵入与中国东部的岩石圈减薄密切相关。
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| 关 键 词： | 同位素 岩石圈地幔 岩石圈减薄 中国东部 |
THE MESOZOIC MAGMATISM AND LITHOSPHERIC THINNING IN EASTERN CHINA |
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| Wu Fuyuan,Sun Deyou. THE MESOZOIC MAGMATISM AND LITHOSPHERIC THINNING IN EASTERN CHINA[J]. Journal of Jilin Unviersity:Earth Science Edition, 1999, 0(4) |
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| Authors: | Wu Fuyuan Sun Deyou |
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| Abstract: | The comprehensive summary about the SrNd isotopic features of Cenozoic basalt and their mantle xenoliths indicates the present lithospheric mantle in Eastern China is intensively depleted and newly formed. The lithospheric thinning, most took place in Late Mesozoic, which was corresponded to the same age of large areal and intensive igneous activities in this area,became stronger from west to east in intensity.The detail analysis suggests this kind of lithospheric thinning is closely related to the diffusion of Indiantype asthenosphere in Mesozoic. |
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| Keywords: | SrNd isotope lithospheric mantle lithospheric thinning Eastern China |
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