| 辽西区巫闾山的隆升历史 |
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| 引用本文：马寅生,崔盛芹,吴淦国,吴珍汉,朱大岗,李晓,冯向阳.2000.辽西区巫闾山的隆升历史[J].地球学报,21(3):245-253. |
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| 基金项目:地矿部“九五”重点科技项目!《燕山造山带造山作用过程及动力学机制》 |
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| 中文摘要:本文利用裂变径迹年代学方法 ,结合其他同位素年代学资料 ,通过构造热演化的定量分析 ,认为医巫闾山山脉的隆升历史经历了 118～ 81Ma期间的第 1个快速隆升阶段、81～ 14Ma期间的缓慢隆升阶段和 14Ma以来的第 2个快速隆升阶段。医巫闾山的隆升历史与两侧盆地的沉降历史有着很好的对应关系。山脉隆升相对盆地沉降有一个滞后期 ,山脉的快速隆升阶段对应盆地快速沉降的后期和消亡阶段。现今的医巫闾山山脉是 14Ma以来第 2个快速隆升阶段的产物 ,其隆起时间距今大约有 4～ 5Ma。 |
| 中文关键词:医巫闾山 隆升历史 热年代学 |
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| Uplift History of the Yiwulushan Mountains in West Liaoning |
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| Abstract:Thermal-chronological evolutional curves were const ructed for analyzing the uplift history of the Yiwulushan Mountains on the basis of zircon and apati te fission t rack dat ing combined with K-Ar age data and U-Pb age data of the Yiwulushan granite .The results show that there have been two periods of rapid uplif t since the intrusion of the Yiwulushan grani te .The first occurred f rom 118 to 81 Ma .The second has lasted from 14 Ma till now .The ancient Yiwulushan Mountains w ere slow ly eroded f rom 81 to 14 Ma .The uplift histo ry of the Yiwulushan Mountains has a good corresponding relationship with the depression history of the basins in the w est and in the east .There is a delaying period in the mountain uplift relative to the depression of the basins .The rapid uplift of the mountains corresponds to the w ithering period of the basin or the late stage of the rapid depression of the basin. The present Yiwulushan mountains were formed in the second rapid uplif t period, hence younger than 4 ～ 5 Ma. |
| keywords:Yiwulushan mountains uplift history thermal chronology |
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