Abstract: Apatite minerals separated from samples that were collected from elevations of 520m to 1 950m on the Huashan batholith, yielded fission track ages of (20.59?3.6)Ma to (29.26?3.3)Ma. The data suggest an uplift rate of 0 019 to 0 189mm/a. One zircon mean fission track age of (43.45?2.7) Ma also suggests that the Huashan batholith started to uplift in early E 2. We infer that there is a sub normal fault developed in north part of the Huashan batholith.

Key words: Huashan batholith, Fission track, Uplift rate

摘要： 对采自华山岩体不同高度的磷灰石样品进行裂变径迹分析,所得结果结合相关地质资料认为:(1)华山岩体抬升至少始于渐新世或始新世;(2)华山主峰及北峰间可能发育一条对应于华山山前断裂的次级正断层,断距约340m;(3)据华山北峰样品研究,其各时段的平均抬升速率依次为29.26～25.05Ma,V=0.183mm/a;25.05～23.27Ma,V=0.152mm/a;23.27～20.59Ma,V=0.019mm/a。

关键词: 华山岩体, 裂变径迹, 抬升速率