应用宇宙成因核素10Be和26Al追溯环境变迁过程

宇宙成因核素¹⁰Be和²⁶Al因其特殊的形成机制、稳定的地球化学行为和相对较长的半衰期,可有效示踪不同时间尺度地球环境演化过程,近年来在追溯地貌演化和第四纪古环境变迁中得到了广泛应用。通过介绍¹⁰Be和²⁶Al的生成机制,大气成因¹⁰Be的应用,原地成因¹⁰Be与²⁶Al测年的基本原理、影响因素和采样及实验注意事项等,为进一步拓展宇宙成因核素¹⁰Be和²⁶Al应用研究提供有益参考。

Tracing Paleoenvironment Changes with Cosmogenic Nuclides 10Be and 26Al

Cosmogenic nuclides ¹⁰ Be and ²⁶Al have been widely applied to trace the paleoenvironment changes and the evolution of landforms during the Quaternary Period because of their unique formation mechanism, stable geochemical properties and long radioactive half-life. In this paper, the formation mechanism of ¹⁰Be and ²⁶Al, application of atmospheric cosmogenic 10Be, basic principles of 10Be and 26Al dating, affecting factors and considerations in field sampling and laboratory test of ¹⁰Be and ²⁶Al were discussed. The application of ¹⁰Be and ²⁶Al in tracing the paleoenvironment changes was introduced so as to provide a useful reference for researching cosmogenic nuclides of ¹⁰Be and ²⁶Al in geoscience and Quaternary geology in the future.