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地球形成以后在地球物质当中是否有过核过程存在?它们有哪些类型?规模有多大?究竟在地球化学作用当中能起些什么影响?这一系列问题是目前研究地球化学的人非常感兴趣的。目前已知地壳中约有120种天然放射性核类存在,其中36种为核反应产生的短寿命
Are there any nuclear processes existing in the Earth’s material after Earth’s formation? What are their types? How large are their scales? What are the possible effects of geochemistry? The series of questions are of great interest to current geochemists . It is known that about 120 kinds of natural radioactive nuclei exist in the crust, of which 36 are short-lived