Electron spin resonance (ESR) dating
Electron spin resonance (ESR) dating
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DOI：
10.1016/1040-6182(89)90010-4
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发表时间：
1989
影响因子：
2.2
通讯作者：
R. Grün
中科院分区：
文献类型：
--
作者：
R. Grün
自 1975 年 Ikeya 对日本 Akiyoshi 洞穴中的钟乳石进行测定以来，ESR 测年法已被系统地应用于地球科学和考古学中。与此同时，这项新技术已成功应用于洞穴沉积物、泉水沉积的石灰华、软体动物贝壳、珊瑚和牙釉质等材料的年代测定。目前的研究重点是石英的测年，它可以对加热的陶瓷、火山岩、断层内材料或风吹沉积物进行年龄评估。ESR 测年基于矿物中顺磁中心数量的测量。这些中心是由 U、Th 和 K 等自然放射性元素的 α、β 和 γ 辐射产生的，并随着时间的推移而积累。必须确定两个参数：样品所暴露的累积剂量 (AD) 和剂量率 (D)。本综述包括三个主要部分： (a) ESR 测年介绍； (b) 该方法的应用； (c) 附录，详细说明了剂量率计算、电子自旋共振的物理基础、ESR 光谱仪和 ESR 谱线。重点介绍了 ESR 测年法的应用概述。这包括对各种材料、采样、样品制备和测量技术的 ESR 信号的讨论。
ESR dating has been systematically applied in earth sciences and archaeology since 1975 when Ikeya dated a stalactite from the Akiyoshi cave in Japan. In the meantime this new technique has been successfully applied to the dating of materials such as speleothems, spring deposited travertines, mollusc shells, corals, and tooth enamel. The present research focuses on the dating of quartz which allows the age assessment of heated ceramics, volcanic rocks, intrafault material, or windblown sediments.ESR dating is based on the measurement of the number of paramagnetic centers in a mineral. These centers are generated by alpha-, beta-, and gamma-radiation of the matural radioelements such as U, Th, and K, and have accumulated over time. Two parameters have to be determined: the accumulated dose (AD) and the dose rate (D) to which the sample was exposed.This review comprises three major parts: (a) introduction into ESR dating; (b) application of the method; and (c) appendices giving detailed description of dose rate calculation, physical basis of electron spin resonance, the ESR spectrometer and ESR lines.The major emphasis lies on the outline of the application of ESR dating. This includes the discussion of the ESR-signals of the various materials, sampling, sample preparation, and measurement techniques.