Measurement and approximation of the age spectra of rocks and minerals during 40Ar/39Ar dating

被引：1
|
作者：
Alekseev, D. V. [1 ,2 ]
Travin, A. V. [1 ,2 ]
机构：
[1] Russian Acad Sci, Siberian Branch, VS Sobolev Inst Geol & Mineral, Pr Akademika Koptyuga 3, Novosibirsk 630090, Russia
[2] Novosibirsk State Univ, Ul Pirogova 2, Novosibirsk 630090, Russia
来源：
RUSSIAN GEOLOGY AND GEOPHYSICS | 2017年 / 58卷 / 10期
基金：
俄罗斯基础研究基金会;
关键词：
40Ar/39Ar dating; age spectrum; inverse problem; Fredholm integral equation; CONSTRAINTS; HISTORY;
D O I：
10.1016/j.rgg.2016.09.035
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
During 40Ar/39Ar dating, the age spectrum of the sample can be seriously distorted due to averaging of its Ar isotope composition over the fraction of gas released during the measurements. New methods of age spectrum approximation with suppression of distortions have been developed. The efficiency of these methods is experimentally demonstrated. A new high-resolution method for measuring age spectra from the fraction of gas released is proposed. This method is based on experimental data and permits refining the age spectrum or its fragments. The applicability and efficiency of this method are also shown experimentally. The proposed measurement method can be used not only to measure age spectra during 40Ar/39Ar dating but also to measure other isotope characteristics of rock and mineral samples during stepwise separation of analytes. (C) 2017, V.S. Sobolev IGM, Siberian Branch of the RAS. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：1232 / 1239
页数：8
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