锆石裂变径迹(ZFT)年代学:进展与应用  

Zircon Fission-Track Thermochronology (ZFT): Advances and Applications

作　　者：焦若鸿[1] 许长海[1] 张向涛 阙晓铭[1] 

机构地区：[1]同济大学海洋地质国家重点实验室,上海200092 [2]中海石油(中国)有限公司深圳分公司研究院,广东广州510240

出　　处：《地球科学进展》2011年第2期171-182,共12页Advances in Earth Science

基　　金：国家自然科学基金项目"大别造山带侏罗纪的构造热历史重建:裂变径迹和Ar-Ar年代学约束"(编号:40872138);海洋地质国家重点实验室资助课题"南海北部陆区裂变径迹热年代分析及其构造意义"(编号:MG200904)资助

摘　　要：裂变径迹技术是解决各种与时间—温度相关的地质问题的一种低温年代学手段。与磷灰石相比,锆石裂变径迹具有较高的封闭温度和退火区间,有其特定的地质意义和应用。自20世纪90年代以来,开展了大量锆石裂变径迹退火的研究,包括退火特性、径迹测量、退火模型,以及来自露头和钻孔样品的退火研究。首先介绍了锆石裂变径迹的分析程序、测量标准、实验退火模型,并比较了不同手段所得到的封闭温度及部分退火区间;其次概述了锆石裂变径迹的主要应用,包括盆地物源及热历史,造山带冷却剥露过程,以及断裂的热改造作用等方面,指出裂变径迹与(U-Th)/He方法的结合是以后的研究趋势。The Fission-track technique is a unique low-temperature thermochronology for assessment of time-temperature dependent evolution in various geological settings.Because of a higher closure temperature and partial annealing zone than apatite fission-track,zircon fission-track has a featured geological significance and application.Since the last decade of the 20th century,there has been a great number annealing research performed on zircon fission-track,including annealing properties,track measurement,annealing models,and annealing knowledge from samples of outcrops and boreholes.An investigation of zircon fission track has been made firstly in general covering various analytical procedures,measurement standards,experiment annealing models,coupled with a comparison between closure temperature and partial annealing zone obtained from different methods.Some major applications of zircon fission-track are summarized then,concerning analysis of sediment provenance and thermal history of the basin,cooling and exhumation of the orogen,and faulting thermal adjustment.It is pointed out that the combination of fission-track and（U-Th）/He is the future research trend.

关 键 词：锆石裂变径迹 实验退火模型 封闭温度 地质应用 

分 类 号：P512.2[天文地球—地质学]