(U-Th)/He chronology: Part 1. Data, uncertainty, and reporting
(U-Th)/He chronology: Part 1. Data, uncertainty, and reporting
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(U-Th)/He 年表：第 1 部分。数据、不确定性和报告
DOI：
10.1130/b36266.1
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Brown, R.W.
中科院分区：
文献类型：
--
作者：
Flowers, R.M.;Zeitler, P.K.;Danišík, M.;Reiners, P.W.;Gautheron, C.;Ketcham, R.A.;Metcalf, J.R.;Stockli, D.F.;Enkelmann, E.;Brown, R.W.
（U-Th）/He地质年代学和热年代学领域在过去的~ 25年中有了巨大的发展。该工具适用于大部分地质时间，新的(U-Th)/He计时器正在不断开发中，该方法用于各种研究。因此，该技术的用户基础迅速扩大，世界各地正在建立新的实验室。这既是机遇，也是挑战。目前还没有普遍同意的报告测量(U-Th)/He数据或数据衍生物的协议。也没有报告He扩散动力学、4He/3He或连续升温数据的标准化做法。报告与所有类型数据相关的不确定性的方法也有很大差异。在这里，我们将讨论这些问题。我们回顾了方法的基本原理，可以确定日期的材料类型，如何获取数据，与数据还原相关的过程和选择，并对数据和不确定性报告提出建议。我们主张报告原始测量数据和衍生数据，同时报告假设陈述，适当的参考文献，以及对用于从测量值计算衍生数据的方法的清晰描述。对数据和不确定性报告采用更全面和统一的方法将使数据能够在未来以不同的解释背景和数据简化方法重新简化，并将促进不同实验室产生的数据集的相互比较。总之，这将提高(U-Th)/He年表的价值、跨学科使用、可靠性和持续发展。
The field of (U-Th)/He geochronology and thermochronology has grown enormously over the past ∼25 years. The tool is applicable across much of geologic time, new (U-Th)/He chronometers are under continuous development, and the method is used in a diverse array of studies. Consequently, the technique has a rapidly expanding user base, and new labs are being established worldwide. This presents both opportunities and challenges. Currently there are no universally agreedupon protocols for reporting measured (U-Th)/He data or data derivatives. Nor are there standardized practices for reporting He diffusion kinetic,4He/3He, or continuous ramped heating data. Approaches for reporting uncertainties associated with all types of data also vary widely. Here, we address these issues. We review the fundamentals of the methods, the types of materials that can be dated, how data are acquired, the process and choices associated with data reduction, and make recommendations for data and uncertainty reporting. We advocate that both the primary measured and derived data be reported, along with statements of assumptions, appropriate references, and clear descriptions of the methods used to compute derived data from measured values. The adoption of more comprehensive and uniform approaches to data and uncertainty reporting will enable data to be re-reduced in the future with different interpretative contexts and data reduction methods, and will facilitate inter-comparison of data sets generated by different laboratories. Together, this will enhance the value, cross-disciplinary use, reliability, and ongoing development of (U-Th)/He chronology.