A Framework for Evaluating Variation in (U-Th)/He Datasets
A Framework for Evaluating Variation in (U-Th)/He Datasets
复制标题
评估 (U-Th)/He 数据集变化的框架
作者：
F. Sousa;K. Farley
本文提出了一个评价(U-Th)/He数据集变异的框架。该框架是客观的、可重复的，并且基于从单个(U-Th)/He年代得出的热历史的兼容性。这种新方法的结构包括三个基本步骤。首先，用模型定量地约束每个单独颗粒的允许热历史。其次，样品中所有颗粒的热历史都显示在相同的轴上。第三，对每个单独颗粒的允许热历史的兼容性进行了评估。这允许用户评估是否可以合理地解释单粒日期之间的差异(这里称为合法)或不合理(非法)。此外，这种方法允许准确地表示非法变化对样品的热历史约束的影响。我们使用文献中的各种例子以及合成数据来演示这一新框架的应用。本文的模拟是使用模拟软件QTQt(5.6.0版)和基于辐射损伤累积和退火模型的He扩散动力学进行的，但该框架被设计成可以很容易地适应任何模拟软件和扩散参数。
This paper presents a framework for evaluating variation in (U-Th)/He datasets. The framework is objective, repeatable, and based on compatibility of thermal histories derived from individual (U-Th)/He dates. The structure of this new method includes three fundamental steps. First, the allowable thermal history of each individual grain is quantitatively constrained with a model. Second, the thermal histories of all grains from a sample are visualized on the same axes. Third, the compatibility of the allowable thermal histories of each individual grain is evaluated. This allows a user to assess whether variation among single grain dates can plausibly be explained (referred to here as legitimate) or not (illegitimate). Additionally, this methodology allows for accurate representation of the impact that illegitimate variation has on the thermal history constraints of a sample. We demonstrate the application of this new framework using a variety of examples from the literature, as well as with synthetic data. Modeling presented here is executed using the modeling software QTQt (version 5.6.0) and the He diffusion kinetics based on the radiation damage accumulation and annealing model, but the framework is designed to be easily adaptable to any modeling software and diffusion parameters.
通过连续斜坡加热筛选磷灰石 (U-Th)/He 热测时法：He 年龄成分及其对年龄分散的影响
影响因子：
5
作者：
McDannell, Kalin T.;Zeitler, Peter K.;Janes, Darwin G.;Idleman, Bruce D.;Fayon, Annia K.
通讯作者：
Fayon, Annia K.
影响因子：
12.1
作者：
Vermeesch, Pieter;Tian, Yuntao
通讯作者：
Tian, Yuntao