天山、西昆仑山中、新生代幕式活动的磷灰石裂变径迹记录  

Apatite fission-track records of Mesozoic and Cenozoic episodic reactivation of the Tianshan and West Kunlun Mountains

作　　者：王彦斌[1] 王永[1] 刘训[1] 傅德荣[1] 王军[1] 王世成[2] 

机构地区：[1]中国地质科学院地质研究所,北京100037 [2]中国科学院高能物理研究所,北京100080

出　　处：《中国区域地质》2001年第1期94-99,共6页Regional Geology of China

基　　金：国家自然科学重点基金!(F49734230);新疆305项目!(96-915-07-03);国土资源部国际合作与科技司项目!(9501203)联合资助

摘　　要：通过对天山独山子—库车公路、西昆仑山新疆—西藏公路出露的7个花岗岩样品的磷灰石裂变径迹分析，研究了天山、西昆仑山脉低温（＜110℃）热历史。磷灰石裂变径迹年龄范围为（9.6±0.8）～（89.2±2.3）Ma，平均裂变径迹长度变化范围为（7.9±3.7）～（11.6±1.9）μm。磷灰石裂变径迹年龄反映冷却作用时代，地质资料和磷灰石裂变径迹分析数据表明，天山在白垩纪存在一次抬升作用，天山和西昆仑山在中新世发生另一次抬升作用。：The low-temperature （i．e.＜110℃） thermal history of the Tianshan and West Kunlun Mountains has been studied by apatite fission track analysis of 7 granite outcrop samples.Fission-track ages for these samples range from 9．6±0．8 to 89．2±2．3 Ma with mean track lengths varying from 7．9±3．7 to 11．6±1．9 μm.The apatite fission track ages from various geographical regions suggest difference in styles of cooling during the Mesozoic－Cenozoic.The geological and apatite fission-track data from the Tianshan and West Kunlun indicate that there occurred an uplift the Tianshan in the Cretaceous and another uplift in the Tianshan and West Kunlun in the Miocene．

关 键 词：天山 西昆仑山 磷灰石裂变径迹 新生代 幕式活动 抬升作用 

分 类 号：P542.1[天文地球—构造地质学]