| 一种约束盆地低温热历史的裂变径迹技术 |
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| 引用本文： | 张向涛,张青林,王绪诚,阙晓铭,陈会霞.一种约束盆地低温热历史的裂变径迹技术[J].华南地质与矿产,2012,28(2):93-99. |
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| 作者姓名： | 张向涛 张青林 王绪诚 阙晓铭 陈会霞 |
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| 作者单位： | 1. 中海石油（中国）有限公司深圳分公司,深圳,518067
2. 同济大学海洋地质国家重点实验室,上海,200092 |
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| 摘 要： | 裂变径迹(FT)技术是根据矿物中铀裂变产生的辐射损伤特性进行分析的低温热年代技术。随着对FT退火行为和实验退火模型研究的深入,使得这一技术成为约束沉积盆地低温热历史的重要手段。Laslett等、Crowley等和Ketcham等先后提出3个重要的磷灰石FT实验退火模型,其中以Ketcham等的退火模型研究最为深入,它分析了磷灰石类型、时间、温度和化学成分对其径迹退火的影响,使用c轴投射径迹长度和Dpar等参数,形成了描述磷灰石FT多元动力学退火的数学模型。锆石FT与U-Th/He技术、Ro值、地表温度和地层年龄等,均是约束磷灰石FT热历史重建的重要约束条件,HeFTy(2009)是进行低温热历史模拟的主要软件之一。
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| 关 键 词： | 裂变径迹 退火模型 磷灰石 盆地热历史 |
A Constraining Thermal History of Basin Fission-track Technology |
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| ZHANG Xiang-Tao,ZHANG Qing-Lin,WANG Xu-Cheng,QUE Xiao-Ming,CHEN Hui-Xia.A Constraining Thermal History of Basin Fission-track Technology[J].Geology and Mineral Resources of South China,2012,28(2):93-99. |
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| Authors: | ZHANG Xiang-Tao ZHANG Qing-Lin WANG Xu-Cheng QUE Xiao-Ming CHEN Hui-Xia |
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| Institution: | 1.CNOOC China Limited-Shenzhen,Shenzhen 518067,China; 2.School of Ocean and Earth Science,Tongji University,Shanghai 200092,China) |
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| Abstract: | Fission-track(FT) thermochronology is a low-temperature dating technique utilizing the damage property produced by uranium fission decay.As the advanced researches of annealing behavior,and laboratory annealing models,this technique,especially apatite fission-track,has become an important measure to constrain the thermal history of sedimentary basin.Among three main apatite fission-track annealing models proposed by Laslett et al.(1987),Crowley et al.(1991) and Ketcham et al.(1999),respectively,the last one is the most significant and widely-applied annealing model,which integrated the influence of time,temperature and chemical composition to various types of apatite,together using the c-axis projected track-length and Dpar.This apatite multi-kinetic fission-track annealing model by Ketcham et al.(1999) can be applied well to make thermal modeling,describing the temperature-time relation in the development of basin.Zircon FT,(U-Th)/He,apatite(U-Th)/He,Ro value,surface temperature,and stratigraphic age are all as constraints for fission-track thermal modeling,while the HeFTy(2009) is an excellent software for reconstruction of low-temperature thermal history. |
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| Keywords: | fission track annealing model Apatite thermal history of basin |
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