| 西天山山脉多期次隆升-剥露的裂变径迹证据 |
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| 关键词:West Tianshan Mountain apatite fission track dating uplift and exhumation |
| 基金项目:国家基础规划研究项目(编号:2001CB409808、2001CB7110013); 国家自然科学基金青年基金项目(编号:40102022) |
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| Multi-Stage Uplift and Exhumation of the West Tianshan Mountain: Evidence from the Apatite Fission-Track Dating |
| The apatite fission track dating method has been widely applied in the study of the uplift and exhumation history of mountains. The uplifting process of the Tianshan Mountains has long been controversial, and still less attention has been paid to the West Tianshan Mountain. A series of samples, consisting of granite and some other volcanic rocks, were collected from three sections across the Chahanwushu Mountain of West Tianshan, and apatite was chosen for fission track dating in the laboratory. The results reveal that the West Tianshan Mountain has probably experienced multi-stage uplifting and exhumation events. Further temperature-time modeling of apatite was conducted on the basis of analytical data of the fission track length. Combined with studies of regional data, it is suggested that there existed four stages of rapid cooling and uplifting events in the West Tianshan Mountain during the Mesozoic-Cenozoic period, i.e., from Late Triassic to Early Jurassic (220～180 Ma), in Middle Jurassic (160～130 Ma), in Middle-Late Cretaceous (110～80 Ma), and in Late Cenozoic (since ca.24 Ma). |
| CHEN Zheng-le,WAN Jing-lin,LIU Jian,LI Sheng-xiang,ZHENG En-jiu,HAI Xiao-zhong,LI Xi-gen,GONG Hong-liang.2006.Multi-Stage Uplift and Exhumation of the West Tianshan Mountain: Evidence from the Apatite Fission-Track Dating[J].Acta Geoscientica Sinica,27(2):97-106. |
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