| 碎屑颗粒裂变径迹热年代学 |
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| 关键词:detrital thermochronology Linxia basin 8 Ma B P |
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| Detrital Grain Fission Track Thermochronology |
| Detrital thermochronology, based on the closure temperature theory (Dondson, 1973),is a useful method for inferring the exhumation features and the thermal history of source area by studying the unreset detrital grains deposited in strata. In the past 20 years, detrital thermochronology has been widely applied to geological researches with the advance of the analytical technology. In China, the detrital thermochronology is still in its begininning stages, and hence it is necessary th study its feasibility. Can the detrital thermochronolgoy be applied to geological studies successfully? Based on a detail study of Linxia basin, the authors obtained the detri-tal fission track data, the conventional fission data and the growth strata data. The detrital fision track data show that a tectonic activity occurred at about 8 Ma B P,resulting in the uplift of Jishishan and disintegration of Linxia-Xunbua basin (Zheng et al., 2003)The conventional fissionstrack data from Jishishan and the growth strata data from Linxia basin and Xunhuia basin show simi-lar results. These similar results suggest the detrital thermochronoglogy is a successful method for obtaining information of tectonic ac-tivities. |
| ZHENG Dewen,Wan Jinglin,ZHANG Peizhen,YUAN Daoyang,LI daming.2005.Detrital Grain Fission Track Thermochronology[J].Acta Geoscientica Sinica,26(z1):267-. |
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