| 恒山-五台地区同位素年代学与地质事件演化系列的建立 |
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| 关键词:isotopic age geological event Hengsban Complex Wutai complex |
| 基金项目:本课题得到北京大学重点测试基金的资助。 |
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| 摘要: |
| Geochronology and Geological Event Sequences of Hengshan-Wutai Precambrian Complex |
| Statistics of many new isotopic age data show that the peak value of Hengshan complex (2520 Ma) is some 20 Ma younger than that of Wutai complex (2540 Ma)．This serves as the evidence that Hengshan complex might be the arc root of Wutai complex. Based on an integrated analysis of various geological records, the authors have divided the evolution of Wutai-Hengshan Precambrian complex into five stages. It is thus inferred that the central arogeny should have taken place between 2.55 and 2.50 Ga in North China craton. |
| NIU Xianglong,LI Jianghai.2005.Geochronology and Geological Event Sequences of Hengshan-Wutai Precambrian Complex[J].Acta Geoscientica Sinica,26(z1):115-117. |
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