Zircon Fission-Track Thermochronology and Applications to Fault Studies
Zircon Fission-Track Thermochronology and Applications to Fault Studies
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DOI：
10.2138/rmg.2005.58.4
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发表时间：
2005
影响因子：
--
通讯作者：
T. Tagami
中科院分区：
文献类型：
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作者：
T. Tagami
锆石是最有用的矿物之一，用于解开岩石中记录的地球历史。在锆石中蚀刻裂变径迹成功之后（Fleischer等人，1964; Naeser 1969; Krishnaswami等人，1974），早期的研究主要集中在为地层学目的测定年轻火山层位的年龄（例如，Naeser et al. 1973; Hurford et al. 1976; Seward 1979; Gleadow 1980; Kowallis et al. 1986; Kohn et al. 1992）。随后，锆石的裂变径迹分析被广泛采用，沿着其他放射性测年方法，如U/Pb和（U-Th）/He技术（例如，Davis et al. 2003;赖纳斯2005），以了解各种地质环境中岩石的热年代学：即，用于造山研究的基底岩石的热历史分析（例如，Zeilter et al. 1982; Hurford 1986; Kamp et al. 1989; Sorkenn 1993; Seward and Mancktelow 1994; Hasebe and Tagami 2001; Spikings et al. 2001），利用沉积岩中的碎屑锆石颗粒进行物源分析和断层内或附近的热历史分析的热年代学，下文将重点介绍。在本章中，锆石裂变径迹热年代学的热敏性的实验室和现场研究的背景下进行了审查。然后，锆石裂变径迹分析的实验室程序使用外部探测器的方法进行了概述，实践中的裂变径迹实验室的京都大学。有关这些裂变径迹分析的基本原理，包括数据分析和图形显示，请参阅Tagami和O 'Sullivan（2005）的章节。最后，以日本野岛断裂带的锆石裂变径迹分析结果为例，介绍了该技术在地质上的应用。这些岩石是使用五个钻孔和一个沟槽对活动断层系统进行系统钻探的目标。应用于其他地质环境和...
Zircon is one of the most useful minerals used to unravel the Earth’s history recorded in rocks. After the success of etching fission tracks in zircon (Fleischer et al. 1964; Naeser 1969; Krishnaswami et al. 1974), early studies focused primarily on dating young volcanic horizons for stratigraphic purposes (e.g., Naeser et al. 1973; Hurford et al. 1976; Seward 1979; Gleadow 1980; Kowallis et al. 1986; Kohn et al. 1992). Subsequently, fission-track analysis of zircon has been extensively employed, along with other radiometric dating methods, such as U/Pb and (U-Th)/He techniques (e.g., Davis et al. 2003; Reiners 2005), to understand the thermochronology of rocks in a variety of geological settings: i.e., thermal history analysis of basement rocks for orogenic studies (e.g., Zeilter et al. 1982; Hurford 1986; Kamp et al. 1989; Sorkhabi 1993; Seward and Mancktelow 1994; Hasebe and Tagami 2001; Spikings et al. 2001), thermochronology using detrital zircon grains in sedimentary rocks for provenance analysis and thermal history analysis in or near faults, which will be highlighted below. In this present chapter, the thermal sensitivity of the zircon fission-track thermochronometry is reviewed in the context of laboratory and field studies. Then, laboratory procedures of the zircon fission-track analysis using the external detector method are outlined, as practiced in the fission-track laboratory of Kyoto University. For basic fundamentals of these fission-track analyses, including data analysis and graphical displays, see the chapter by Tagami and O’Sullivan (2005). Finally, as an example of recent geological applications of the technique, the results of zircon fission-track analysis of the Nojima fault zone, Japan, are presented. These rocks were the target of systematic drilling of an active fault system using five boreholes and a trench. Applications to other geological settings and the …